"HELLO GM SUIT MARKETING DUMMIES! Evidently you got a few large sedans out there with supercharged engines with really nice power that get just as good gas mileage as some four cilinder turbo engines (the one in the Volvo S40 for one) and I bet the general public does not know this. I didn't , which is why I asked the question. If I had a 3.8 V-6 supercharged engine that got about 24/25 miles a gallon in a large sedan I would make that a big part of my marketing campaigne. HELLO GM SUIT MARKETING DUMMIES."
Did you ask the question just so you could say that? The straight 6 in our Trailblazer (Trailblazer, yes the large, heavy SUV) we get high teens for MPG (about 17-19)
A smaller vehicle with a smaller 6 cylinder (albeit supercharged) I would guess about the same MPG as our Trailblazer. That is depending on how you drive it. My Lancer 2.4L gets about 30MPG (BTW I drive the piss out of it) A Honda Civic probably gets about 35MPG (however my car has 162 horsepower, a Civic has 115...big difference)
If you are going to buy an expensive car with an expensive engine with high performance that sucks premium, why do you care about MPG? BTW the EPA numbers are never close WRT my cars since if I get a powerful car, I will not drive it like a grandma, that is a huge waste.