Popular Mechanics have published their "test driven" review of the 2011 Infiniti M37 and M56 sedans. 'Under the hood of the $46,250 M37 is the familiar 3.7-liter VQ-series V6, now rated at 330 hp and 270 lb-ft of torque. But the biggest news, for those who relish the thrust from V8 power, is the motor in the $57,550 M56. The new 5.6-liter V8 is rated at 420 hp and 417 lb-ft of torque. Both engines are paired to a seven-speed automatic and all-wheel drive is optional. M37s are rated to deliver 18 mpg city and 26 highway, while the V8 M56 model's performance dips slightly to 16 mpg city and 25 highway. Like nearly every other car in Infiniti's lineup--with the exception of the hulking QX56 SUV--the new M sedans ride on an updated version of the company's FM platform. This architecture is so flexible it can underpin cars as varied in size and mission as the Nissan 370Z and the Infiniti FX crossovers.'
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