"The same technology that makes a lightweight car a high performer also makes it efficient – how many cars have performance figures of 0 - 100 km/h in 4.77 secs but produce only 199 g/km CO2?" That question was posed by Mike Kimberley, Chief Executive of Group Lotus plc, and he's got a point. As part of its ongoing quest to shave weight, Lotus has blessed us with what are undoubtedly the most efficient fossil fuel-burning sportscars the world has ever seen. Of course, Lotus vehicles have also proven rather adept at accepting EV conversions for this same reason.
For the 2010 model year, Lotus has upped the ante yet again by incrementally improving the aerodynamics of its Exige S, nudging up the fuel efficiency and lowering the carbon emissions in the process. A revised fascia lets more air in to cool the radiator and twin oil coolers and a new rear wing reduces drag and still puts down 42 kilograms (93 pounds) of downforce at 160 km/h (about 100 mph). Add it all up, and the new Exige S emits 199 g/km CO2 and achieves European Combined Cycle ratings of 8.5 litres/100 km (33.2 mpg). Read the full press release after the break.
The New Lotus Exige S - 2010 Model Year
The 79th International Geneva Motor Show sees the introduction of the exciting new 2010 Model Year Lotus Exige S with a newly designed front end, a new rear wing and impressive emissions of just 199 g/km CO2.
The Lotus Exige is a renowned high performance coupe that has a well earned reputation of choice for drivers who demand uncompromised performance, both on the road and on the track.Lotus has always pursued efficiency and fuel economy and for the 2010 Model Year Lotus Exige S, Lotus has reduced the emissions to only 199 g/km CO2 and increased the fuel economy to an impressive 8.5 litres/100 km on the Official European Combined Cycle and a frugal 6.5 litres/100 km on the Official European Extra Urban Cycle.
The 2010 Model Year also sees the introduction of a few key changes to the Exige to enhance the look and improve aerodynamic performance. A restyled front end and new larger, rear wing that not only reduces drag, but also gives a more muscular stance enhancing the lightweight shrink-wrapped look of the whole car.
The composite rear wing is based on the design from the Exige GT3 road car concept shown at the Geneva Motorshow in 2007. Compared to the 2009 Model Year Exige tailgate mounted wing it is 181 mm wider and mounted 46 mm higher and 61 mm further back. It is attached to the rear bodyshell clam via rear end plates which not only increases the stiffness of the whole structure but also ensures that as much of the airflow as possible passes over the rear wing. This careful airflow management increases stability, reduces drag and, most importantly, maintains the impressive downforce figures of 42 kg at 160 km/h.
The restyled front end includes a larger, more angular air intake mouth to help funnel more air through the radiator, to improve the efficiency of the engine system. Ahead of the front wheels on either side of the main aperture, two larger air intakes increase the airflow to the twin oil coolers. Horizontal vanes bisect these oil cooler air-intakes to stabilise the airflow to further increase the cooling efficiency.
Since the Exige S2 was launched in 2004, the power has increased from 190 hp through 220 hp to 240 hp in standard road form - more for the track centric Exige Cup 260 - and the new larger air intakes improve engine cooling for these current higher powered Exige variants.
Mounted below the three new air intakes is a new aerodynamic splitter for the2010 Model Year Exige. Made from a lightweight composite, the splitter is nowextended to wrap around the whole of the front end and chiseled side lips areraised to deflect air around the tyres to reduce drag.
Mike Kimberley, Chief Executive of Group Lotus plc said, "Over the years, theLotus Exige has developed a hardcore fan base around the world and itspopularity has placed it as one of the legendary sportscars of the 21st century.So far, over 5000 Exiges have been hand-built at our high-tech manufacturingfacility making it a significant contributor to our global production. The lightweight Exige has one of the highest specific power outputs of any globallyemissions certified car and 133 hp per litre is a perfect demonstration of ColinChapman's philosophy of performance through light weight and of Lotus'relentless pursuit of efficiency. The same technology that makes a lightweight car a high performer also makes it efficient - how many cars have performance figures of 0 - 100 km/h in 4.77 secs but produce only 199 g/km CO2?"
Like all Lotus cars, the functional components of the car are also beautifullydesigned as Russell Carr, Chief of Lotus Design, explains, "For 2010 we havetaken the already visually extreme Exige and given it even more visual drama.The changes we have integrated into the front and rear of the Exige signal aneven clearer and purposeful intent. The purposeful rear wing is race inspired, the new angular air intakes and full width splitter gives a more hard-edged and aggressive look. Overall, the Exige appears more planted and gives the illusion that both the front and rear of the car are wider than they really are without losing its agile and lithe character."
Roger Becker, Director of Vehicle Engineering said, "The changes we havemade to the Exige for 2010 Model Year are quite subtle when taken individually, but taken as a complete package they make significant improvements to aerodynamics and the overall look of the car. The Exige is a classic fit-for-purpose performance machine, the design tweaks we have made have reduced the drag, cleaned up the airflow around the front and rear of the car, whilst retaining the impressive balanced downforce figures, to give an exciting high performance drive."
The specification of the highly successful 2009 Model Year Exige Cup 260, unveiled at the Paris Motorshow in 2008 remains unchanged.
The 2010 Exige in more detail:
Driver and passenger airbags are standard on all models while an on-board
Tyre Pressure Monitoring System is standard in the USA. The instrument pack in the Exige contains much more than just a pair ofstylishly back-lit dials. It also features a high-definition LCD message panel that can display a scrolling text message with vehicle systems information. The instrument pack always displays the fuel gauge, engine temperature and odometer, however you can select to display the time, trip distance or a digital read-out of your speed in the opposite calibration to that of your speedometer dial - if your dial is in mph, the readout is in km/h.
Warning symbols are 'secret until lit', keeping the instrumentation free from visual clutter and distraction until necessary. Gearchange 'shift' lights similarly remain hidden until required. There are three shift up warning lights, cumulatively lighting when the driver is getting closer to the rev limiter and when all three are illuminated, they flash to indicate that you should have changed up a gear by now!
A "key" issue
The Exige has a "Thatcham approved" alarm/immobiliser system and the ignition key incorporates the controls for the alarm/immobiliser and central locking functions. This key features three buttons, the one which locks the doors and sets the alarm/immobiliser is stylishly crowned with the famous Lotus roundel. The second button unlocks the doors and de-actives the alarm/immobiliser, and the final button is a panic alarm button.
The contents of the Touring pack, for the Exige S includes:
* Full leather or Microfibre suede-effect interior
* Leather trimmed centre console
* Leather handbrake gaiter
* Sound system iPod* connection
* Full carpets, with embroidered logo
* Auxiliary driving lights (in markets where legally allowed)
* Sound insulation kit
* Cup holder
The Exige S Sport pack includes:
* Bilstein sports dampers
* Traction control
* Adjustable front anti-roll bar
* T45 roll bar, with integrated harness mounts
The Exige S Performance Pack - more punch, more ability for Exige S:
* 308 mm front cross-drilled and vented discs with AP Racing four piston callipers
* Uprated front and rear brake pads
* Full length upsized roof scoop
* Variable slip traction control
* Uprated clutch plate and cover
* Uprated vehicle performance through enhanced power and torque delivery
* Launch control
With the Exige performance pack, the power is raised to 240 PS / 179 kW (minimum) at 8000 rpm courtesy of a Magnuson/Eaton M62 supercharger, new faster flowing injectors and higher torque clutch system and an upsized roof scoop to feed more air to the supercharger intercooler system.
This hike in power, together with an increase in torque to 170 lbft / 230 Nm /23.5 kgm at 5,500 rpm from the standard 158.6 lbft / 215 Nm / 22 kgm at 5500rpm, helps whisk the Performance Pack Exige S from zero to 60mph in 4.5 secs and 0-100km/h in 4.77 secs, and on to 100mph in 11.97 secs. Top speed rises to 145 mph. The power and torque of the 240 PS engine is increased across the rev range giving even more flexibility. Despite these high levels of performance the fuel economy is impressive with a new combined figure of 8.5 litres / 100 km and 199 g/km CO2 - reduced from 9.1 litres / 100 km (combined) and 216 g/km CO2 for the 2009 Model Year Exige. Continuous engineering improvements over the last year including careful whole vehicle optimisation has enabled this sportscar to be even better for fuel economy and emissions.
Of course the increased power and straight-line performance are only a couple of elements of the Performance Pack option. The clutch is uprated and a clutch damper fitted; there are thicker, 308mm diameter cross-drilled and vented discs at the front clamped by AP Racing four-piston callipers; the standard brake pads are replaced by uprated pads.
Keen to pass on lessons learned on the track with the Exige GT3 racing programme, Lotus Sport has contributed another important track specific technology to the Performance Pack - launch control combined with variable traction control.
From the driver's seat the track orientated launch control allows you to determine the engine revs you wish to use during a standing start on the track. Having programmed that limit, it will not be exceeded when you then hold down the throttle and sidestep the clutch at departure from the line. The clutch damper cushions the severity of the clutch / transmission engagement to minimise the stresses to the drivetrain (noting that continuous abusive standing start applications will destroy the drivetrain components). The launch control also keeps wheelspin at bay until 6 mph, after which the traction control assumes its duties.
As with launch control, you can dial in the amount of traction control you require from the driver's seats, altering it on the move to suit driving style and the characteristics of particular corners. The amount of traction control can be varied in over 30 increments from an optimum 7 percent tyre slip to completely off. The message display in the new instrument pack displays what degree of traction control you have currently dialled in. The beauty of all the packs is that they can be combined so a customer can have the additional interior and exterior equipment from the Touring pack with the sport focussed equipment from the Sport pack.
Air conditioning, Lotus traction control and limited slip differential are available as stand-alone options. Customers wanting to add further finishing touches to their Exige - such as specifying adjustable dampers and forged wheels can do so by ordering from an extensive range of accessories.
The Premium Colour Range has been designed to further enhance the choice for customers to individualise their cars. Most of the paints in this range require a more sophisticated application process and are from our paint supplier's premium range. The paint colours in this range have been individually priced, and it is Lotus' intention to extend and change this range at periodic intervals.
The 2010 Model Year Exige S will enter the EU markets in May 2009.
* 199 g/km CO2
* 8.5 litres/100 km (33.2 mpg) Combined Cycle
* 11.9 litres/100 km (23.7 mpg) Urban Cycle
* 6.5 litres/100 km (43.5 mpg) Extra Urban Cycle
* iPod is a trademark of Apple inc registered in the USA and other countries