I hit over 30 on the Highway. The 3800 5 speed is tuff to be MPG wise. If I got rid of the CAI and 180 Thermostate, ran my tire pressure at 37 PSi and slowed down below 75MPH I think I could beat 32 MPG. A tune setup for mileage could get 1 or 2 more.

I drive 26.5 miles non-stop turnpike and 4 miles stop and start. I check my mileage weekly. City I am not real sure of, This is a hvy car and how you driver and home many starts and stop you have is going to play a major factor. My Camaro get better Gas mileage then my Sunfire did until I get into a traffic Jam. Around town the Sunfire did a lot better. Hvy cars take more HP to get to 40 MPH but it does not take much more to keep them there. HP=Fuel

 

I can't afford 7 mpg at $4.43 a gallon along with my ridiculous insurance rates...ughhh. But no way in hell I'd sell my Camaro for a civic or other econobox

 

I get 28 highway in my 3.4

 

28 hwy with my 3.4 5-speed. 20-25 in town depending on how I drive.

 

98 base Camaro with 3800 and T5 got 27mpg mixed driving, sold last month.
95 Z28 T56 gets 23mpg same route, not always premium...

 

I'm getting 22/23 city and 29 highway with my '02 3.8.

 

http://www.mpgtune.com/dashboard.php?carId=5661

 

yep.
the 3800 T5 4th gens are one of the most economical sports cars ever made... love my Z, but I'd trade for an equal 3800 stick anytime. 90 mile total commute daily is why, and MD roads are too crowded to 'release the hounds' anyway..

 

LS1 6 speed. A mix of city and highway is 19-20mpg. I did a 370 mile trip, 90% of that in 6th gear at 70 mph i averaged 28 mpg on 93 octane. all stock.

 

'95 3.4l around town get 17-18 mpg don't know what i get highway, I use the Buick "boat" for long trips.