Highest MPG anyone achieve?

[jeffSDguy]

I know etas have high mpg but how high can one actually achieve?

[BoxDriver86]

I was getting 40-42 when I had my 80+mile commute. That was on a completely flat road, usually in a line of traffic. The highest I got (while actually driving and not coasting downhill) was 46, but that was very short lived.

[dannyyisntt]

I get 99999999999999mpg in my 318i. (no engine).

[10Toes]

31 MPG, 318is, m52, zf 320, 3.25:1

[Dominic49]

fuelly.com

[MR 325]

Post REAL numbers though, not OBC numbers.

Also, I can not believe that an Eta gets 40mpg sorry.

[10Toes]

I don't even have an OBC.

[Kershaw]

40mpg is bs. even with an m42.

[PReta]

on my trip from LA to san diego, which is a 300 mile round trip, my eta only got around 22-24 mpg. i think it also doesnt help that its an auto.

[long tall eta]

29.7@75mph on my eta w/ flat road. pulled in behind a semi one day and while drafting was getting 49.2. approx 10 feet behind him.

[nando]

Post REAL numbers though, not OBC numbers.

Also, I can not believe that an Eta gets 40mpg sorry.

There's nothing wrong with the OBC if you haven't monkeyed with anything

anyway, I got well over 26mpg with my auto 325ix on a trip over to Lake Chelan. I got an easy 30mpg in a total POS 318is.

[nando]

on my trip from LA to san diego, which is a 300 mile round trip, my eta only got around 22-24 mpg. i think it also doesnt help that its an auto.

at higher speeds the auto is actually better. it has a locking torque convertor above 55mph and a taller overdrive gear.

[PReta]

what could possibly be the cause of semi-bad high gas mileage?

[bmwstephen]

28mpg after a refresh on oil, seals, on my autotragic. It's good to see my mpg needle stay between 40mp and 25mpg once the locking torque converter kicks in after 55mph

[IminDiegoTriick]

20.8 mpg
:(