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Originally Posted by Dean
Your point appeared to be that my A/F comment was incorrect, and that newer engines were significantly more fuel efficient. I continue to contend that since fuel injection & electronic engine managemnt, the gains have been miniscule. Yes, they can make more power from smaller engines, but we are not talking about power/displacement, we are talking about MPG! There is no magic pill they have found that changes the optimal A/F ratio or extracts significantly more HP/unit of fuel.
My recomendation that he find the smallest displacement NA engine AWD car is still accurate, or are you contesting that?
So what was your point if that was not it, and what evidence do you have for significant increases in gas millage since the introductions I referenced?
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I'll argue that you are wrong. No individual advancement may have a huge fuel savings but the combined effect most certainly has. The reason cars are not getting more fuel efficient is that they are getting heavier and manufactures are tuning them for power rather than economy. If you built a car to the performance level of a 70s car for example I have no doubt you would see a 25% increase in fuel economy over what the car is today.