Quote:
Originally Posted by switchlanez
So the new FB20 engine in the 2012 Impreza is 2 liters and gets 27 city/36 hwy mpg with CVT and 25 city/33 hwy for the 5MT. But it outputs 150 hp on the 2,900 pound Impreza.
The FR-S/BRZ's FA20 is based on the FB20. Also 2 liters but difference is it's been tuned to 200 hp. The D-4S direct injection is supposed to increase hp and fuel efficiency but I think the engine has to run richer (consume more gas) to achieve the huge +50 hp bump and tuning is skewed more towards power than efficiency. The FR-S/BRZ is 200 lbs. so that helps.
200 lbs. lighter but +50 hp? I think it would have the same or worse efficiency numbers than the 2012 Impreza. Also, CVT makes a difference which our car won't have. And Impreza's 5MT is geared for fuel efficiency; our 6MT should be geared for some mix of performance/fuel efficiency.
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I wouldn't be surprised if the auto was geared for better fuel economy. I know the manual BRZ's have a sound pipe from the engine to the cabin in order to increase the engine's snarl inside the cabin at high rpm's. So they have already shown that they are trying to make the manual a bit more "sporty".