Quote:
Originally Posted by 928S  It seems that everyone wants to believe that DI is more fuel efficient, but contrary to what you've read here and elsewhere (I've seen the same misinformation on other websites and in print magazines) GM says...
(gas mileage info)
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DI
is more fuel efficient than port injection. city gas mileage of the car is the end result of a lot of variables but the measure of efficiency is bsfc. brake specific fuel consumption means this engine makes more horsepower per unit of fuel used than the base model. so at the same load and rpm, the DI engine uses less fuel to do the same amount of work. check out the difference in final drive ratio between the different models and add the extra weight of awd, then you can compare the apple to the orange.
rg