Stop? Pause? A distinction without a difference with Mazda iStop

If an engine is not being fed any fuel and the crankshaft is not rotating, is it running? Of course not. But would you say it is stopped or paused? Both, it makes no difference. It's simply a semantic distinction with no difference in real meaning. Mazda has introduced a new kind of automatic start-stop system on the 2010 Mazda3 called i-Stop. Until now, such systems primarily consisted of using either a beefed up starter motor or an alternator integrated with starter motor functionality to restart the engine. These units have to be more robust in order to withstand the greater number of engine start cycles that are required compared to traditional engines.

Mazda's system takes advantage of direct injection and a crank position sensor to re-start the engine without a stronger starter. The engine is stopped/paused with one of the pistons in the middle of its power stroke. During re-start, fuel is sprayed directly into the cylinder and then ignited. The force of the expanding and combusting fuel pushes the piston down, taking the load off the starter. Thus, the engine can re-start more quickly and smoothly.
Gizmag calls this pausing the engine rather than stopping it, but Mazda never uses that term in any of its press materials. Currently the i-Stop system is not available on the U.S. market 3, but it will likely arrive eventually.

[Sources: Gizmag, Mazda]



PRESS RELEASE:

Mazda3 2.0 DISI i-stop

Table of Contents Mazda3 2.0 i-stop

1. At a Glance The New Mazda3 2.0 i-stop

2. Introduction Mazda launches its new Start-Stop System 'i-stop'

3. The Mazda i-stop System Saving Fuel without sacrificing Driving Fun

4. The all-new Mazda3 The next-generation Sports Compact

5. 'Sustainable Zoom-Zoom' A Commitment to the Environment

6. Technical Specifications

1. At a Glance

The new Mazda3 2.0 DISI i-stop

Mazda i-stop
World's only start-stop system that uses combustion energy for restart. This results in fast response to pedal input and comparatively high potential for saving fuel
Restart of the engine in ca. 0.35 seconds, twice as fast as conventional start-stop systems
Sophisticated engine management ensures reliability and easy functionality
New MZR 2.0 DISI petrol engine with direct injection, 'i-stop' start stop system and six-speed manual transmission produces 111 kW/151 PS of maximum power at 6,200 rpm and 191 Nm of maximum torque at 4,500 rpm
Mazda3 MZR 2.0 DISI i-stop uses 6.8 l/100 km of fuel (combined), 14 percent less than the first-generation Mazda3 with conventional 2.0-litre petrol. It produces 159 g/km CO2 and meets Euro Stage V
New Single Nano-Technology Catalyst for excellent longterm exhaust treatment performance and greatly reduced use of precious metals

All-New Mazda3
Since original launch in 2003, sales of the successful Mazda3 have increased yearly
With over 2 million models, it is the highest-selling Mazda in history
The first-generation Mazda3 has won 90 international awards so far
The all-new, second-generation Mazda3 enhances the original model's core attributes even further. Its dynamic design is more than just a promise. With above-average sportiness and high levels of safety and environmental compatibility, Mazda3 is a highly competitive car in the European compact segment

Exterior
The new Mazda3 exterior design goal was "Remaining faithful to an inherited identity, while evolving the design to make it more expressive"
The front air intake is an especially bold interpretation of the Mazda five-point grille, giving the new Mazda3 a confident road presence
Two body styles meet the personal tastes and different needs of European customers
Powerfully-sculptured shoulders and a low centre of gravity give the hatchback a sporty character
A flowing roof line lends the four-door sedan an elegant, coupe-like personality
The hatchback is 4,460 mm long (Sports Grade: 4,490 mm ) und 1,470 mm high
The sedan is 4,580 mm long and 1,470 mm high
Minimal gaps between exterior body panels give the new Mazda3 high levels of build quality

Interior
Compared to the first-generation, the new Mazda3 has 6 to 11 percent lower noise levels on the inside, achieved by aerodynamic measures on the exterior, increased torsional rigidity of the entire vehicle, enhanced suspension rigidity and extensive use of passenger cell insulation
Minimal parting lines and grained surface materials for a high quality feel
A lot of room to move in the interior. The driver-oriented cockpit underscores the sporty character of the new Mazda3
Ergonomics like a sports car – using the shift lever and steering wheel is intuitive and easy
New sport seats give excellent side support and come with optional memory function
Audio system with BOSE® premium surround-sound system, connectibility to external audio equipment and Bluetooth® interface for a mobile phone

Other Powertrains (without i-stop)
MZR 1.6-litre petrol produces 77 kW/105 PS of maximum power at 6,000 rpm and 145 Nm of maximum torque at 4,000 rpm
MZR 2.0-litre petrol with intake-manifold fuel injection and five-speed automatic transmission with manual-shift mode produces 110 kW/150 PS of maximum power at 6,500 rpm and 187 Nm of maximum torque at 4,000 rpm
MZR 2.3 DISI turbo engine in the all-new Mazda3 MPS produces 191 kW/260 PS of maximum power at 5,500 rpm and 380 Nm of maximum torque at 3,000 rpm. Market launch beginning in autumn 2009
MZ-CD 1.6-litre turbo diesel with diesel particulate filter (DPF) produces 80 kW/109 PS of maximum power at 4,000 rpm and 240 Nm of maximum torque at 1,750 rpm
New MZR-CD 2.2-litre common-rail turbo diesel with newly developed diesel particulate filter (DPF) meets Euro Stage V:
Standard Power version produces 110 kW/150 PS of maximum power at 3,500 rpm and 360 Nm of maximum torque at 1,800-2,600 rpm
High Power version produces 136 kW/185 PS of maximum power at 3,500 rpm and 400 Nm of maximum torque at just 1,800-3,000 rpm

Chassis and Safety
Despite larger dimensions and more equipment, the new Mazda3 weighs up to 15 kg less than the outgoing model (depending on body style and engine)
17 percent more high and ultra-high tensile steels employed
10 percent higher torsional and flexural stiffness for more driving safety
Newly-developed McPherson front suspension for even more precise handling
Newly-developed multi-link rear suspension for enhanced ride comfort
Speed-sensitive electro hydraulic power assisted steering for precise steering feel and low fuel consumption
DSC, traction control system (TCS), ABS, electronic brake-force distribution (EBD), brake assist, front, side and curtain airbags are standard
Innovative rear-vehicle monitoring system (RVM) that warns the driver before changing lanes with both optical and acoustical signals when a vehicle is approaching from behind or driving in the blind angle
Bi-Xenon headlamps, pivoting adaptive front lighting system (AFS), emergency stop signal (ESS), tyre-pressure monitoring system (TPMS) and parking sensor system available
2. Introduction

Mazda launches its new Start-Stop System 'i-stop'

Mazda continues to follow its 'Sustainable Zoom-Zoom' strategy. With the launch of
a Mazda unique and highly efficient start-stop system called 'i-stop' in the new Mazda3 MZR 2.0 DISI, the company takes another step down this path. This innovative system paired with direct-injection petrol technology in the new Mazda3, delivers an impressive mix of driving fun and environmental compatibility.

The unique system uses combustion energy to restart the engine quickly with only a little help by the starter motor and without using much fuel. To accomplish this, the positioning of the pistons and crankshaft, valve opening and direct petrol injection are precisely tuned with one another. The support of the electric starter motor is only required at the very beginning of restart. Initial ignition combined with an impulse to the crankshaft is able to restart the engine in an extremely smooth and fuel-efficient way, and twice as fast as conventional start-stop systems.

Combined with the direct-injection petrol engine, aerodynamic optimisation of the exterior and further measures, the new i-stop system reduces the fuel consumption of the all-new Mazda3 2.0 DISI by 14 percent in a combined cycle, compared to the first-generationMazda3 with conventional 2.0-litre petrol.
3. The Mazda i-stop System

Saving Fuel without sacrificing Driving Fun

At the heart of Mazda Zoom-Zoom is the joy of driving an automobile. To foster this while minimising its effect on the environment is a challenge that Mazda is facing with increasing commitment. When Mazda developing engineers started working to renew the entire model range, they adhered to a simple logic: cars that are not moving should produce no emissions. This has resulted in the introduction of a Mazda-developed start-stop system, which makes its European debut in the new 2.0-litre DISI four cylinder engine in the new Mazda3.

The i-stop system of the new Mazda3 2.0-litre direct-injection petrol is activated automatically when the car is started. If the driver chooses, he can deactivate the system with a switch on the dashboard. The system is not noticeable when driving after initial start-up. Only when the vehicle first comes to a standstill and the driver pushes down the clutch to idle the car, does the engine shut down automatically. A green indicator lamp in the driver cluster shows that the start-stop system has initiated engine cut-off as planned. When the car is stationary, no fuel is used. To continue driving, the driver pushes the clutch and the engine starts up again automatically.

With i-stop, Mazda is not introducing a variation of other systems currently on the market. In fact, it is a completely unique solution developed solely by Mazda that needs an electric motor only during the initial phase of restart. Basically, i-stop capitalizes on the advantages of direct-injection technology to restart the engine after stopping. And it is exactly this ability that makes Mazda's i-stop system so unique.

Once the new Mazda3 comes to a halt, the engine's control module does not cut-off the engine until the cylinder air volume of the compression-stroke and the expansion-stroke pistons are equal. The driver does not notice this, because it takes only a fraction of a second, and it puts the engine in an ideal restart position. During this process, one cylinder remains in the combustion-stroke position. The restart process begins when fuel is injected directly into this cylinder, atomized then ignited, which causes the piston to move down. At the same moment, the starter motor applies a small amount of additional momentum to the crankshaft. Both these events together initiate an extremely quick restart of the engine.

The decision to not use engine combustion power alone for restart was made after Mazda development engineers carefully measured how much fuel is needed for re-ignition. They recognized that using combustion power alone to restart would not only require a careful analysis of piston positioning prior to engine cut-off, it would also require a complete scavenging of unburned gases from the combustion chambers. This would mean letting the engine continue to run a bit longer before engine cut-off, which would cost additional fuel. By supporting restart with an electric motor, this could be avoided.

Coordinating this type of re-ignition mechanism with the electric impulse at restart requires extremely sensitive sensors and engine control. The Mazda i-stop system monitors the piston position of each cylinder and calculates in a fraction of a second prior to engine cut-off exactly which cylinders will be most efficient for restarting later.
Conventional systems identify which cylinder is in combustion-stroke position after the crankshaft is turned by an electric starter, which requires additional energy and slows down restart. The Mazda system, on the other hand, initiates engine restart immediately with a measured restart time of just 0.35 seconds, twice as fast as conventional systems.

This is also the reason why the new Mazda3 2.0-litre DISI petrol engine is so smooth and quiet upon restart. As the use of an electric starter is limited to a minimum, the engine restarts without a loss in reaction time, without vibration and noise. With this new engine, Mazda introduces the first piston engine that restarts as spontaneously as if turning on a switch.

The new Mazda3 2.0 i-stop uses only 6.8 l/100 km of fuel (combined), 14 percent less than the conventional 2.0-litre petrol engine with intake-manifold injection in the previous-generation Mazda3. It emits 159 g/km of CO2 and meets Euro Stage V emission standards. Nevertheless, with a maximum power of 111 kW/151 PS at 6,200 rpm and maximum torque of 191 at 4,500 rpm and a six-speed manual gearbox, it delivers sporty driving performance.

Adapting i-stop to an existing engine concept required only a few modifications. Besides adapting the engine management system, it requires a unique crank-angle position sensor, which is more precise. With the help of this sensor, i-stop is able to stop the crankshaft in the ideal restart position by cutting fuel injection, closing the throttle valve and using alternator load as a brake.

To ensure reliable electric energy supply at all times, particularly during engine shut-off and restart, the Mazda3 2.0 i-stop has two batteries. The main battery delivers the general energy supply, while the sub battery is used exclusively for starting the engine.

When i-stop shuts off the engine, illumination, audio system and all other electric consumers continue to work. Even the climate control is still operating as usual, as long as the driver does not require the full cooling capability of the system. In this case i-stop recognizes the need to restart the engine and initiates it accordingly.The function of all systems is not interrupted during engine restart.

The i-stop system does not initiate engine cut-off during the warm-up phase, helping the exhaust-gas treatment system to reach its optimal operating temperature quickly and minimize emissions. The same goes for stopping on a slope. If the car is on a hill with a grade of more than 14 percent, the engine continues to run for safety reasons.

New Single Nano-Technology Catalyst for Mazda3 2.0 i-stop

The all-new Mazda3 MZR 2.0 DISI petrol not only uses direct injection and i-stop to save fuel and lower CO2 emissions, it also employs a new catalyst that uses single nano-technology to embed the catalytic precious metals directly into the catalyst support matrix, which has big advantages over normal catalytic converters: it suppresses thermal degradation caused by precious metal aggregation, and it substantially improves the longterm emission treatment performance.

But even when being produced the Single Nano-Technology Catalyst contributes to Mazda's Sustainable Zoom-Zoom philosophy. It contains up to 90 percent less precious metals than conventional catalysts, which helps protect these valuable resources.
4. The all-new Mazda3

The next-generation Sports Compact

One of the greatest challenges in automobile development is improving on a successful model. If this model happens to be in an especially competitive segment, then striking and highly appealing attributes are needed. The all-new Mazda3 delivers this with an unmistakable design, innovative environmental technologies and an insightful combination of all its components, resulting in an enjoyable yet safe driving experience. With these attributes, the second-generation of the most successful Mazda model range ever can rightfully be called one of the European compact segment's benchmark vehicles.

Design
Over 480,000 customers around Europe have chosen the Mazda3 during the last six years. They know it as a four-door sedan and a five-door hatchback. Both body styles cover a chassis with a relatively long wheelbase, at 2,640 mm, while still having a sporty layout. Short front and rear overhangs underscore the compact's dynamic character. The sedan version adds a relatively high, powerful-looking rear end to this. With large wheels, and a front and rear track of 1,530 and 1,515 mm respectively (with 17-inch tyres), the wheel wells are almost completely filled out. This helped Mazda designers to sharpen the sporty profile of the all-new Mazda3 even further.

The all-new Mazda3 retains the proportions that gave its predecessor so much character. These make it immediately recognisable and help it stand out in a tough segment with vehicles from nearly every carmaker in the world. Subtle detail enhancements make the design attributes of the second-generation Mazda3 more expressive. Its muscular side panels and rising character lines give the car even more personality. Unique are the car's centre-focussed character lines in front and back. They meet in the middle of the vehicle and express optically what the driver experiences: the new Mazda3 delivers outstanding driving stability.

The most striking design innovation of the new Mazda3 can be found at the front. Its large grille is horizontally articulated and flanked by two body openings placed at the edges of the vehicle. The front is strongly reminiscent of a performance sports car and is set to contribute to high levels of brand recognition in the future – this five-point grille design will be used throughout the entire Mazda product range in the years to come.

Chassis, Powertrains and Equipment
High levels of sportiness gave the outgoing Mazda3 a competitive edge. To enhance this while improving driving comfort of the new model appears at first glance to be contradictory development goals. However, Mazda engineers actually succeeded in sharpening further the new Mazda3's dynamic attributes by increasing torsional stiffness, introducing new crossmember towers at the front axle, a newly-evolved multi-link rear suspension and strengthened body joints. At the same time, they employed high-tensile steels, which contributed to lowering the weight of the body shell. With this, Mazda continues its lightweight strategy, which gives the all-new Mazda3 agility, a balanced and predictable handling and safe road hold.

The all-new Mazda3 continues Mazda's Lightweight Strategy
Another part of Mazda's 'Sustainable Zoom-Zoom' strategy is the development of new vehicles under a strict weight reduction programme, which lowers fuel consumption and reduces CO2 emission. The new Mazda3 set an industry standard for being lighter than its predecessor, while being larger and better equipped. To achieve this, developers used more high-tensile steels, a twin-beam instrument panel, optimized the shape of the rear suspension, while painstakingly reducing the weight of all components (sometimes by only a few grams). As a result, the new Mazda3 is up to 15 kg lighter than the previous model.

Besides enhancing the new car's sporty side, engineers also increased sound insulation, which lowered NVH without diminishing the driver's feel for the road. New rubber stoppers, for instance, are added around each engine mount, along with new front suspension hanger brackets and a tailpipe with enhanced sound insulation. These and other measures help give the
second-generation Mazda3 one of the lowest road noise sound-pressure levels in its segment. Driver and passengers benefit from high levels of driving comfort without having to sacrifice the fun of being in a sporty, dynamic compact car.

Mazda3 has a wide range of powertrains available to meet the diverse needs of a global market. Besides the new MZR 2.0 DISI i-stop engine with direct injection, six-speed manual and 111 kW/151 PS, there are several other powertrains.
The petrol line-up includes the lively MZR 1.6-litre petrol with intake manifold fuel injection and five-speed manual producing 77 kW/105 PS of maximum power at 6,000 rpm and 145 Nm of maximum torque at 4,000 rpm and the MZR 2.0-litre petrol with intake manifold fuel injection and five-speed automatic producing 110 kW/150 PS of maximum power at 6,500 rpm and maximum torque of 187 Nm at 4,000 rpm.
The second-generation Mazda3 MPS, a high-performance compact with a powerful MZR 2.3 DISI turbo petrol direct-injection engine producing 191 kW/260 PS of maximum power at 5,550 rpm and maximum torque of 380 Nm at 3,000 rpm and six-speed manual will be available in Europe this fall.

The diesel line-up features the newly-introduced MZR-CD 2.2-litre clean diesel offered in two sporty yet frugal derivatives. The Standard Power version produces 110 kW/150 PS of maximum power at 3,500 rpm and 360 Nm of maximum torque between 1,800 and 2,600 rpm; while the High Power version produces 136 kW/185 PS of maximum output at 3,500 rpm, and 400 Nm of maximum torque between 1,800 and 3,000 rpm. Also onboard is the very popular MZ-CD 1.6-litre common-rail diesel producing 80 kW/109 PS of maximum power at 4,000 rpm and 240 Nm of maximum torque at a low 1,750 rpm. This engine uses just 4.5 litres per 100 km (combined) and emits a low 119 g/km of CO2.

In all European markets, the Base grade of the new Mazda3 has a long list of standard equipment, much of it optional among Mazda competitors. Base grade standard features include emergency stop signal (ESS), DSC with traction control system (TCS), front, side and curtain airbags and active head restraints. Power adjustable side mirrors are standard, as is telescopic and vertical steering wheel adjustment. The Base grade audio system comes with a CD player with MP3 capability, and an AUX jack for hooking up MP3 devices.

Depending on grade, the new Mazda3 adds features like a Bluetooth® interface, a Bose® premium surround sound system, bi-xenon headlamps with adaptive curve lighting, two-zone climate control, keyless entry and start system, auto-dimming rear-view mirror, rear parking sensor system, heated windshield, and a rain and light sensor system. The new compact is the first Mazda equipped with a newly-developed, affordable, integrated navigation system. It uses
a 4.1-inch display and can be operated from the steering wheel. Navigation data are stored on a compact SD card.

New Sports Version
The new Mazda3 five-door hatchback forms the basis for an all-new Sports version (depending on market) that offers more than just a visual differentiation. Its has a special front bumper with a dark metallic grille and lower bumper, sporty fog lamps, pivoting adaptive front lighting with Bi-xenon headlamps and unique boomerang shaped position lamps (optional), LED tail-lights, 17-inch aluminium alloys, a different rear bumper and, for right-hand drive markets, special side sills. On the inside are a black keynote colour, additional silver trim, and special sports bucket seats that provide extra firmness and improved hold during sporty driving.

Interior
Up to five passengers are pampered on the inside by above-average roominess (for a compact car) and a long list of comfort features. The interior delivers what people have come to expect from
Mazda – a sporty ambience with 'form-follows-function' ergonomics. Also typical for the Mazda brand is the interior's high quality feel with carefully crafted materials.

An important interface here is the driver area. It is designed like a pilot's cockpit to be centred on the driver with intuitive functionality. All controls are grouped according to their function. Depending on their importance for driving and comfort, details are communicated via two easy-to-read LCD displays.

All-new seats are onboard the new Mazda3 that deliver superior comfort. Besides offering larger contact areas for thighs and back, their large side surfaces deliver good side support. Adjustable lumbar support for the front seats offers optimised seat comfort for the driver and front passenger as well.

The new Mazda3 also allows the driver complete visual control over climate control system, trip computer and audio system of the car via an easy-to-read multi-functional information display (MID) in the cockpit.

Passive Safety
The all-new Mazda3 is among the safest vehicles in the compact segment due to its triple-H body architecture, sophisticated front and rear deformation zones, and the use of high-tensile steels in the pillars and side sills.

The front seats have active head restraints that lower the chance of whiplash during a rear collision. Two front airbags, two side airbags and newly-developed, integrated curtain airbags protect driver and passengers, accompanied by new seat belts with double pretensioners (driver´s seat only) and degressive load-limiter retractors. Energy-absorbing foam in the front bumper beam enhances pedestrian protection.

Active Safety
The newest member of the Mazda family has a new pivoting adaptive front lighting system (AFS) with Bi-xenon headlamps that pivot left or right to a maximum of 15º and illuminate the corner or curve automatically. Also onboard is a rear vehicle monitoring system (RVM), which detects a vehicle approaching from the right or left rear or driving in the dead angle, then warns the driver before he might cause a dangerous situation by changing lanes. An emergency stop signal (ESS) is introduced as well; it warns following vehicles with rapidly flashing hazard lights when the driver suddenly brakes in an emergency situation. Once the car stops, the system continues to flash in normal frequency, which can help prevent the following vehicle from hitting the back of the car. ABS, DSC, and brake assist are all standard.
5. 'Sustainable Zoom-Zoom'

A Commitment to the Environment

Since the launch of the Mazda6 in 2002, Mazda has not only been developing vehicles that deliver its Zoom-Zoom philosophy, but also environmental and safety technologies. Zoom-Zoom describes the childlike joy of motion, and reminds us that this joy brings with it adult responsibility. These ongoing efforts, which Mazda calls 'Sustainable Zoom-Zoom,' have earned the Japanese company high praise. Mazda considers closely all variables and – depending on region, product characteristics and current trends – is developing a wide-range of technologies as solutions to achieving a future where cars are environmentally sustainable.

Fuel-Saving Powertrains
Before a backdrop of rising crude oil prices, Mazda approved a new programme in 2007 to ensure long-term individual mobility. With this decision, Mazda made a voluntary commitment to the environment and set long-term goals for developing fuel-saving technologies. The goal of this 'Sustainable Zoom-Zoom' strategy is the gradual introduction of technologies in Mazda automobiles as part of an initiative to optimise the brand's ability to meet future challenges. As a mass producer of popular automobiles, Mazda not only sees a major opportunity here, but also a special responsibility. Without altering the fun-to-drive character of its vehicles, Mazda is committed to lowering the average fuel consumption of its line-up by an amazing 30 percent by the year 2015.

Seita Kanai, Mazda' Director and Senior Executive Officer in charge of R&D, puts it this way: "Mazda is committed to working towards a sustainable future that brings continued happiness and excitement to people in a global society, by developing vehicles that never fail to excite, visually capture the customer's heart and provide a fun driving experience that keeps bringing them back to Mazda. By building highly efficient, clean powertrains and striving to reduce vehicle weight Mazda will play its role in providing environmental benefits."


To implement these goals, nearly all engine groups will be renewed by 2015. Beginning in 2011, new platforms will be introduced that will allow developers to lower vehicle weight by 100 kg and more. This long-term strategy will offer Mazda customers highly innovative environmental and safety technologies. This will strengthen their ties to the Mazda brand, and make repeat purchases even more likely, because customers will know they are getting the latest technology with every new product.

Environmentally-friendly Production Processes
This new strategic direction at Mazda encompasses all company activities, and is being used by the R&D team to more than only developing innovative new products. Mazda engineers are applying 'Sustainable Zoom-Zoom' to renewing automotive technology as consequently as they do to the production processes that build them. Goal here is to make the impact of all Mazda assembly plants highly efficient yet environmentally neutral, while respecting the needs of all employees. Special attention is placed on constantly reducing energy consumption and CO2 emissions of the plants, and lowering the use of scarce raw materials and the production of industrial waste.

An example of the speed at which these goals are being implemented is Mazda's painting process. In 2005, all Mazda assembly plants in Japan completed the implementation of a new three-layer wet paint system. While this resource-saving method was being implemented at Mazda assembly plants outside of Japan, a new painting process was in the starting blocks. This will be introduced in Japan this year and uses water-based paints, which will reduce already-low energy requirements by half. Mazda's paint shops will probably be some of the world's cleanest by then.

Up until 2001, nearly half of Mazda Motor Corporation's energy requirements were used for producing materials and machine-intensive assembly processes. Since that time, Mazda has been able to lower this part of its energy requirements drastically. By the end of 2007, the energy required to build a single vehicle was lowered by 20 percent, along with the CO2 emissions associated with it.

This improvement process will continue at all plants. To be able to respond faster and more efficiently to changes in demand, Mazda introduced a new innovation programme called MONOTSUKURI. This seeks to make production lines more flexible, which will help the company optimise operational capacities. The system will be able to quickly compensate for a sudden drop in orders by increasing the assembly of vehicles that are in demand, and will involve networking all Mazda plants wherever they might be. In this way, intelligent plant construction will help reduce the energy required to assemble a Mazda vehicle during the production process of that vehicle, which will in turn produce less overall emissions.6. Technical Specifications

The New Mazda3 2.0 i-stop

Mazda3 2.0 i-stop


Hatchback
Sedan
Body Type

Monocoque
Monocoque
Doors

4 + liftgate
4
Seating capacity

5
5
Coefficient of drag
Cd
0.30
0.28
Cross-sectional area
m2
2.217
2.217
Seat Adjustability



Driver / front passenger seat slide
mm
230 / 230
230 / 230
Driver / front passenger seat recline

32º / 32°
32º / 32°
Boot Measurements



Volume all seats up (to belt line)
l
340*
430
Volume 2nd row down (floor to ceiling)
l
1,360
---
Load floor to 2nd row
mm
880*
1,027
Load floor to 1st row
mm
1,473
1,580
Distance between rear wheel housings
mm
1,050
1,058
Load floor width at widest point

1,167
1,244
Boot threshold to ground
mm
696
715
Boot lid / liftgate floor height to ground
mm
508
508
Boot height
mm
808*
559
Boot lid / liftgate opening width
mm
944
938








_____________________
* w/o Bose® sound system







Mazda3 2.0 i-stop


Hatchback
Sedan
Dimensions



Exterior



A Overall length Normal/Sports
mm
4,460/4,490
4,580
B Overall width
mm
1,755
1,755
C Overall width mirror to mirror
mm
2,002
2,002
D Overall height (unloaded)
mm
1,470
1,470
E Wheelbase
mm
2,640
2,640
F Track front 15 +16-inch / 17-inch tyres
mm
1,535/1,530
1,535/1,530
G Track rear 15 +16-inch / 17-inch tyres
mm
1,520/1,515
1,520/1,515
H Ground clearance
mm
155
155
Interior



I Front head room w/o sunroof
mm
987
987
J Rear head room w/o sunroof
mm
964
953
K Front shoulder room
mm
1,395
1,395
L Rear shoulder room
mm
1,371
1,371
M Front leg room
mm
1,068
1,068
N Rear leg room
mm
919
919
Front hip room
mm
1,364
1,364
Rear hip room
mm
1,326
1,326







Mazda3 2.0 i-stop - Engine


MZR 2.0 DISI i-stop
Engine Type

In-line 4-cylinder DOHC, 16-valve
Displacement
cm3
1,999
Bore x stroke
mm
87.5 x 83.1
Valves

4 per cylinder
Camshaft drive

Timing chain
Fuel injection system

Direct fuel injection, electronically controlled
Compression ratio

11.2 : 1
Emission control system

3-way catalytic converter
Max. power at min-1
kW
111 at 6,200

PS
151 at 6,200
Max. torque at min-1
Nm
191 at 4,500
Fuel type

Unleaded 95 RON
Fuel tank capacity
l
55
Engine oil capacity
l
4.3
Battery type/voltage


Main battery

46B24L-S / 12 V
Sub battery

26B17L /12V
Transmission

6-speed manual
Powertrain

Front-wheel drive
Gear ratios


1st

3.454
2nd

1.842
3rd

1.310
4th

0.970
5th

0.795
6th

0.717
Reverse

3.198
Final drive ratio

4.105







Mazda3 2.0 i-stop - Chassis


MZR 2.0 DISI i-stop
Suspension and Wheels


Front suspension

MacPherson strut
Rear suspension

Multilink
Damper front

Twintube
Damper rear

Monotube
Stabilizer diameter (front / rear)
mm
21 / 20
Wheel size


16"

16 x 6 ½ J
17"

17 x 7 J
Tyre size


16"

205/55 R 16
17"

205/50 R 17
Steering


Type

Electro-hydraulic
power assisted
Steering wheel turns (lock to lock)

2.94
Turning circle (curb to curb)
m
10.4
Turning circle (wall to wall)
m
10.9
Brakes


Type front

Ventilated discs
Type rear

Solid discs