2011 Infiniti M – Click above for high-res image gallery

The 2011 Infiniti M officially goes on sale next month, and in addition to boasting higher performance numbers and a sleek new exterior design, the EPA has officially released some relatively impressive fuel economy numbers for the new sedan. Both the six- and eight-cylinder Ms benefit from technologies like continuously variable valve timing, and the M56's 5.6-liter V8 uses direct injection to aid in better performance as well as improved efficiency.

The base M37 with Infiniti's 3.7-liter V6 produces 330 horsepower and 270 pound-feet of torque, and nets 18/26 miles per gallon (city/highway). This represents power increases of 27 hp and eight lb-ft versus the outgoing M35 model, as well as one more mpg in both driving cycles. The all-wheel-drive M37x is rated at 17/24 mpg, increases of one and two mpg over the M35x, respectively.

V8-powered M56s use an all-new 5.6-liter engine, good for 420 hp and 417 lb-ft–meaning the grandaddy M produces a whopping 95 hp and 81 lb-ft more than the previous M45. Rear-drive M56s net 16/25 mpg city/hwy, and the all-wheel drive M56x is rated at 16/23 mpg. Even though this engine is substantially more powerful than the old 4.5-liter V8, Infiniti has still managed to improve overall fuel economy.

By comparison, the Mercedes-Benz E-Class is less powerful in both V6 and V8 variants while netting roughly the same fuel economy numbers. If Infiniti can keep the new sedan's price down, consumers in this segment will be smart to add the M to their shopping lists. Click through the jump to read Infiniti's official press release.


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[Source: Infiniti]

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Infiniti Announces Official EPA Mileage Estimates for All-New 2011 Infiniti M37 and M56 Performance Luxury Sedans

New Larger, More Powerful V6 and V8 Engines Produce Improved Fuel Economy Numbers

Infiniti today released official Environmental Protection Agency (EPA) fuel economy estimates for the 2011 Infiniti M performance luxury sedan, showing increases of up to four miles per gallon versus 2010 M models. The new generation M's all-new design includes two new powerplants, a 3.7-liter V6 and 5.6-liter V8, each offering more horsepower and torque than the previous smaller displacement designs.

The 2011 Infiniti M horsepower, torque, fuel economy figures, and increases compared to the previous generation models, are:

MY 2011
M37
M37x
M56
M56x
Horsepower (hp)
330 (+27)
330 (+27)
420 (+95)
420 (+95)
Torque (lb-ft)
270 (+8)
270 (+8)
417 (+81)
417 (+81)
City MPG
18 (+1)
17 (+1)
16
16 (+2)
Highway MPG
26 (+1)
24 (+2)
25 (+4)
23 (+3)

"The all-new 2011 Infiniti M's powertrains offer both increased power and efficiency," said Ben Poore, vice president, Infiniti Business Unit. "Our V6 power is up 9% to 330 horsepower, while V8 power is up almost 30% to 420 horsepower and torque is increased 24% to 417 lb-ft -- while amazingly adding 4 mpg Highway for the M56 and 3 mpg Highway for the all-wheel drive M56x."

Multiple advanced technologies allow the new Infiniti M to provide these increases in power and torque while also improving fuel efficiency across all model offerings. The 3.7-iter V6 and all-new 5.6-liter V8 engine both utilize Continuously Variable Valve Timing Control System (CVTCS) to optimize both intake and exhaust valve timing. Variable Valve Event and Lift (VVEL) technology is also applied to the intake valves on both the V6 and V8 engines to improve performance, emissions and fuel efficiency.

In addition, Direct Injection Gasoline? technology is applied to the all-new 5.6-liter V8, providing more precise combustion control to optimize emissions, fuel economy and torque. An electronically controlled 7-speed automatic is applied as the standard transmission on all 2011 M models. As a result of the improved fuel economy figures, the gas guzzler tax previously accessed on the 2010 M45x does not apply to the 2011 M56x.

"It's an impressive feat of engineering to not only gain 95 horsepower and 81 ft-lb of torque while also improving fuel efficiency by up to 4 mpg for the new V8," added Poore. "Most of all, however, we think buyers will be impressed by the smooth, responsive performance of both the new V6 and V8. Power plus efficiency -- that's a great definition of Inspired Performance."

The all-new 2011 Infiniti M is scheduled to go on sale at Infiniti retailers nationwide beginning March 18, 2011.

About Infiniti
Infiniti offers a full-line of luxury performance automobiles that inspire at every turn, including the G Coupe, Sedan and first-ever Convertible, M sedan, EX and FX crossovers, and the QX full-size SUV. More information about Infiniti and its Total Ownership Experience® can be found at www.InfinitiUSA.com.