Ok, well I don't pay much attention to gas mileage, maybe I should but I seemed to have gotten great gas mileage on my 700 mile trip over the weekend. Last year I did the same trip and I think I got about 26mpg (slightly above) which seems right (per manf spec). Well this year seems to be different! I put in the plenum and the k/n cold air and this is what I got (from the computer, which does seem to be fairly accurate from my experience).

• 34.8mpg (over 10 miles; flat, at-speed, no-ac, no wing) at 68mph
• 31.8mpg (over 60 miles; rolling hills (+/- 100ft), at-speed, ac, wing) at 77mph
• 31.0mpg (over 120 miles; rolling hills 1000'+ altitude changes (500'-3000' ft in altitude), at-speed, ac, wing, subdued driving) at 73mph (compare to last year at 26.4ish)
• 27.0mpg (over 200 miles; multiple 1000'+ altitude changes (500'-3000' ft in altitude), multiple freeway onramps (you know what I mean), and a couple acceleration runs (ditto), ac, wing, spiritted and mostly subdued) generally 77mph

Note, I have factory tire sizes, k/n cold air, plenum, h/r springs (1" lower), and everthing else is stock. Cruise control was used extensively and the windows/sunroof were rarely (if ever) open. *at-speed means I reset the mpg at-speed and does not include on-ramps etc. *I tested my odo with a 5 mile speedo/odo check (actual hwy test setup by state) and I was within 3 seconds off the 1/10 mile flip after 5 miles.

What kind of highway mileage do you get?

 

I get 21-22mpg from 75/25 mix of hiway/city driving. How you get more than 30 is beyond me....

 

I get a steady 13.9 mpg, all in-town light-to-light driving to work and back every day unfortunately. Have yet to take my pcar out on a freeway trip.
I have a heavy foot though, and I like to go light to light very quickly...lol


..In comparison, I used to get 11.2 mpg avg. in my 330i.

 

I average high 17-19 combined

 

Driving around I bet it will be like 18-20 in my normal driving cause I use the right pedal more than the middle one.

Yeah I was REALLY surprised but remember those high numbers where the fuel economy to keep the car at the speed not necissarily a cold start, drive around, get on freeway, drive with traffic. Just the mph stated.

 

I usually get 18-20 mpg around town, but it is a small town and rush hour here is waiting an extra turn for the light on the causeway. I think I have seen ~26 mpg on the freeway.

 

I got around 16-18mpg in a mix of both and a lot of flooring it.

Pete

 

20 same as the guy sabove

 

22 on average but have had 26 many times, mostly highway

 

18-20mpg extra charters

 

I have seen 29 on the instrument but I doubt thats what Im getting in the long run on the freeway

 

20-22mpg about 75/25 City/Highway

 

12-13 and do maybe 95/5 city/hwy.

 

I've seen in the 30's in my 3.4, before it was supercharged.
I get the same readings now with the SC, but apparently the computer is about 15% out due to a longer duty cycle on the injectors.

I usually get 200-220 miles per tank with a mix of 50/50 freeway town driving.

Freeway driving alone I've seen over 350 on a tank, close to 370 if I remember correctly from a road trip to the grand canyon last year.

 

i did a road trip to ottawa, racing and back to toronto and after the 1000kms my average consumption was 10l/100kms

that includes 400kms outbound at average speed of 120kph with some runs upto 200kph.

100kms of crazy driving/rallying down a mountain at WOT so u can imagine how much gas that took up.

400 kms back...cruise control averaging about 120-140kph.

no complaints here