I hear that!!!!

 

I'm still getting about 20-21mpg averaging 30mpg (60% highway, 40% city I think). If I drive a bit aggressively, I'll end up with about 19mpg. I haven't ever recorded a tank with worse mileage than that after break-in.

 

I've got a 09 6 MT and right now (with only 700 miles on the odo mind you) i've been doing around 21.5~ city (granted, I live in a city with 100k people, not LA or NY) and 28.5 best highway (would have been better but i was changing gears and speed since i'm still under the breakin period. Seemed to get a bit better when I got my magnaflow exhaust and im hoping the HKS drop-in filters help a bit as well.

 

i have the 09 g37x Automatic, and i've consistently gotten 20 combined (per the built in system) i drive about 50/50 highway/city.

 

Getting 23-23.5 in the city after getting HKS air filters and magnaflow catback. Only 800 miles now.

 

I have had my car for 1.5 years now and is 2008 S 6MT. I get 18 in the city and 25 on the highway. I got a little worse at first but is has leveled off to that.

Keep in mind I have a heavy foot and for whatever reasons mine does not have a rev limiter.

Dean

PS: I am happy with the 18/25 to be honest considering it is a high hp heavy car with a wide RPM band.

 

Had my Sport AT for 4 mos. Drive mostly city w/ a little stop an go. Lots of lights. Get 19 with no hwy driving. One tank on hwy got 24. Car computer calculated mpg is within 1mpg of manually calculated.

 

I have gotten 28 mpg on one trip that was around 400 miles but the weather was horrible and I pretty much had cruise control on with the speed limit. I think 24-25 is about the norm for 6MT on the highway though.

Dean

 

im a little under 200 miles on my x coupe, and im averaging 14.3 mpg!! and im being very gentle with the car, so what gives?! maybe it's b/c im driving on hilly back roads but still... seems like hummer numbers. i cant imagine how it's going to be once i really step on the pedal.

 

Averaging 16.9 per gallon. Mostly city driving. I drive semi spiritedly in MM most of the time.

 

Something is out of whack there. Are youtting 93 Octane in? To say I drive spirted would be quite a understatemnet. Plus, I have no rev limiter so I will shift later than most people.

Do you have an auto or straight drive?Ge

Generally manual transmissions get better mpg but I dont knw if that is true with the G37.

Dean

 

I get 17mpg average, up to around 24mpg highway. It would be better if I didn't have to drive 30 miles per day in So Cal traffic coming home from work. But I drive with a heavy foot and spend a lot of time in sport mode running higher revs.

 

Still on my first tank of gas and getting 15.5 mpg
09 auto

Getting 16.5 now after a couple hundred miles.

 

I've never cleared the in dash MPG monitor and I'm at 16.7 overall after 2 years and 17k miles.

 

About 60% highway/ 40% city, driving aggressively (mix auto, DS, sport modes) I've averaged 19.7mpg over the life of the car - 7,950mi.