I'm upto 13.8 with the 4.8i and I'm not easy on the gas pedal. Combo city/highway but rush hour highway. Not quite 2000 miles on the odometer.

15 MPG for me have about 10000 miles on mine

damn... i knew i had a heavy foot but it can't be that bad...

i opted for the 3.0 because of mileage... but if this doesn't get significantly better i'm trading her in for a 4.8!!

There is no significant improvement in gas mileage from a 3.0 to a 4.8.

i get only 400km or 16.7L/100 for my 4.8
The dealer said i shouls see improvement at approx 10,000km. is this true?

Does anyone see improvement at 10,000 miles or more?

About 18.5-9 city, 22-23 freeway, 89 octane. 2,700 miles on 3.0, 08 x5. I'm hoping it will also improve with mileage.

I decided not to wait for a diesel. There wasn't enough difference in gas mileage in the diesel, besides I read it would actually be a new engine (in order to meet CA emissions as explained in another thread and I didn't want to be an early adopter) and the cost of diesel gas is now of course out of sight.

I have 3400 miles on my 08' 4.8i...and I get a steady 9/10 mpg. Highway with good flow, will give about 15/16 mpg. There are times though, that I only get 7/8 mpg in the city.

I have never had a car use so much fuel, and we've had lots of V8s and SUVs. Horrible!!

I have a 4.8 and just got 19.7mpg on a 1200 mile trip to Toronto and back from Boston. I drove at 70-85 most of the way. Had to slow down to get through customs. Driving around town in a suburban setting I avg. 16-17mpg. And yes I do use the power but don't treat every stop as a drag race.

I've got 2500k's on my 3.0sd, all city driving with moderate/heavy right foot - 10.5L/100 or 27mpg

computer says my avg speed since I took delivery has been 46kph