I believe your MPG went down in winter because of the reformulated gas for that season....damn EPA and their regs!!

 

I have a 2010 Camaro 2SS/RS, with an automatic transmission. I get about 16 to 18 mpg on the highway and 10 to 13 mpg in the city.

 

Still getting low 18 for mostly city driving.

 

I'm around 20mpg with a mix of city and highway. This includes the occasional lead foot episodes lol

 

I have a 2011 2LT Convertible with the V6. I have Flowmaster mufflers and BBK Cold air intake. I do much more highway than city and my average stay right around 26 mpg. I also tend to have a bit of heavy foot, so all in all I am quite satified.

 

I rented a base one, with auto box, and averaged 27 over a week, with highway and some inner city streets. I ordered one of my own, when I got home this weekend.

 

I drive a 1995 LT1 6spd camaro and thats all that matters. Insurance, mileage, what ever, doesn't matter I drive my favorite car.

 

im still getting about mid 18s avg mpg, ive gotton 20.4 on one tank but that was like driving slow and easy all the time. That was no fun!! Bottom line ,I bought my camaro cause thats what i wanted and its a rag top.