E70 X5 30i (N52) Owners Post YOUR MPG

[andrewwynn]

Oh n=1 but when we first bought wife's e53, it reported a ludicrous mpg: 25 or so for 4-5 hour freeway drive.

I stopped about 40 miles from home and decided to check the tire pressure: it was FIFTY!

That car would regularly report 23-24 on highway after setting the pressure down but also spent a lot of its life on 235s which had to be more fuel efficient.

I use soft winter tires year 'round and that certainly costs me in the mpg.

[richardb]

We are still at 17.9

Will report back after new tires, new spark plugs coming very soon

[andrewwynn]

17.9 is average right? That seems normal. What is pure highway? Say cruise on flat ground about 70-73 mph.

[richardb]

Mileage update. Have been consistently at 17.2 MPG since winter set in.

I feel like the DISA valves may need replacing. No codes though. Appears to be $300 for the pair.

[CLS70]

I have been at 15.0 L / 100 KM with 95% City / short distance driving, in Winter, using 91 Gas (this equals 15.7 MPG)

[richardb]

12/2022 update, we are back up to 17.1 MPG after replacing the fuel transfer pump. Previously the mileage was really bad, down to 16.4 MPG for quite some time.