On paper, the 6 has a meager lineup of engines: a 2.5-liter inline-4 is standard across the lineup, but this engine makes use o direct injection, variable valve control, and a high 13:1 compression ratio to reduce fuel consumption while still producing a class-competitive 184 horsepower and 185 pound-feet of torque. The 6 is rated as high as 40 mpg on the highway when equipped with optional stop/start and a regenerative-energy system called i-eLoop. All 6s are front-wheel drive