MPG-o-Matic 2012 Subaru Impreza 2.0i Sport Review Summary: The 2012 Subaru Impreza is the most fuel-efficient AWD vehicle on the highway in America, bar none. The closest challenger for the Impreza’s remarkable 36 miles per gallon (MPG) are the 2012 BMW 528i xDrive , 2013 Audi A4 quattro, and 2013 Audi A5 quattro at 32 MPG … all of which are significantly more expensive than the Impreza’s starting MSRP of $17,495.
The 2012 Subaru Impreza is powered by a sequential multi-port fuel injected DOHC 2.0-liter Boxer (horizontally opposed) four-cylinder engine that produces 148 horsepower (HP) and 145 foot pounds of torque. The Impreza is available with a five-speed manual transmission or CVT (Continuously Variable Transmission) automatic, as either a five-door hatchback or four-door sedan, but only in All-Wheel-Drive (AWD). Manual-equipped Imprezas use Continuous AWD with a viscous-coupling locking center differential, while CVT-equipped models use Active All-Wheel Drive with an electronically managed continuously variable hydraulic transfer clutch. All 2012 Impreza’s are equipped with the naturally-aspirated 2.0 liter Boxer. The WRX and WRX STI are fitted with the 2.5-liter turbocharged Boxer.
					
 MPG-o-Matic 2012 Buick LaCrosse eAssist Review Summary: The 2012 2012 LaCrosse with eAssist plays the efficiency card, as it targets the more affordable end of the luxury full-size market, with the Lincoln MKS, Acura TL, and Lexus ES350 as its primary competitors. The LaCrosse eAssist mates a 2.4-liter inline four with a lithium-ion battery powered electric motor, which achieves significantly better fuel economy (25/36) than the conventionally powered MKS (17/25), TL (20/29), and ES350 (19/28). When compared to the slightly smaller 
 MPG-o-Matic 2013 Chevrolet Malibu Eco Review Summary: The 2013 Chevy Malibu Eco dukes it out in the midsize sedan segment with the Honda Accord, Ford Fusion, Toyota Camry, and Hyundai Sonata. General Motors chose to cast aside the flashy hybrid emblem of the Eco’s predecessor, in favor of a small green badge. The new Malibu Eco swaps in a 2.4-liter inline four and lithium-ion battery powered electric motor in place of the older Hybrid’s 3.6-liter V6 and NiMH battery pack. We found the new model to be quieter, faster, more fuel-efficient, and more refined.