Does it make a difference with VDC on or off?

 

That sux! I have just over 300 as well. My first fillup gave me a little over 17 (SoCal stop & go, 5AT 05 sedan, 18" wheels).

 

Same here. I have done only 240 miles and the tank is getting empty. It's only the first tank and I have been putting mainly traffic miles on it. While I've been keeping it under 4000 rpms, I still have been driving a bit sporty. It's to hard to go easy when you got all those gears. I know feeding 300 ponies is demanding, but I hope to get at least 16 in the future.

 

I am getting about 17 with my 05 automatic. That is actually less than my wifes 8 passenger Honda Pilot. But boy is it fun to drive. Even with the slushbox. I have to say that my old 5 speed manual 330i did a lot better on gas mileage. I could get 22 or 23 on the same route that I drive my G. However, it wasn't any fun to drive so that is why I got rid of it.

 

03 G here & im averaging like 16-17 mpg it sucks, im pretty disappointed my friend got a 04 TL and hes averaging like 20 and he got like 29mpg on the highway

 

Just over 20/gallon overall, both city and highway. 2004 Auto sedan.

 

I just checked my mpg on my '05, at 1300 miles, and it was like 19.6, city, I'm happy with that!

 

damn. same setup here. I'm wondering if something's wrong now. Even when I drove to the dealer twice in Glendale, with some good freeway miles, it still didn't get above 12. I thought maybe I was too heavy on the accelerator, but sounds like others are too and still getting 16-17.

hmm...

 

no.

 

I filled up the tank for the first time last night. I thought it was almost empty but there was 4 gallons in the tank. Thus, my mileage was better than I thought - 15mpg. Gas was sure expensive but whatever.

 

I have an 05 sedan auto. First tank with mostly wide open highway miles at 71 mph, resulted in 25.02 mpg. Second tank with local driving mixed in got 19.6. Third tank 95% highway wide open miles at 71mph got 24.5. It now has just over 1,000 miles on it.

I hope the mpg increases a little with premium at 2.45 a gallon.

 

There is one factor that I haven't seen anyone mention. That is the tire size. Some have replaced their wheels and tires with larger size. If you change the overal diameter of the tire by say 1", it changes the circumference of the tire by 3.412", which theoreticaly takes less revolutions of the wheel to travel one mile. This throws of the speedometer which in turn gives an odometer reading of less miles than actualy traveled. The amount of fuel used is a function of the weight, resistance (wind and friction of drive train) and acceleration, which doesn't change regardless of the wheel & tire assembly diameter (energy required to move a certain mass a certain distance). What this means is that you have actually traveled more miles than shown on your odometer and when divided by the number of gallons of fuel used will yield a lower MPH value than it actually is. Did I totally confuse everyone?

 

How are you calculating your mileage? I don't see how you could be getting 12 mpg unless something is drastically wrong or your calculation is off.
To my namesake: The odometer reading will not be accurate if your overall wheel + tire diameter is changed from stock unless it is reprogrammed.

 

I'm not doing the calculations... going by what the factory Fuel Efficiency program is reporting, but off hand calculations seem to match: 200 miles on the trip odomoter until i refill, 17 gals to fill... seems to match the computer pretty closely.

I am beginning to get concerned something is wrong. Oddly enough, I was only getting 9 day I took delivery. Brought the car in for PDI the next day, and it bumped up to 11-12.

I think I'm going to get it up to 500-600 miles, change the oil to get the junk out and see what happens. If it doesn't improve then, I'll take it in.

 

Okay - you are basing this on your first fillup? There is a <b>high</b> probability that you are basing your numbers on an incomplete tank. If the dealer didn't top of the tank like you did, the numbers will be off. If he shorted you say 4 gallons, then your mileage is more like 200/13 or 15.4. Give us the numbers on the next fillup when you are certain that you were able to top it off.
Now for my disappointment - my second fillup only gave me 15.5 mpg vs the 17.1 I got for the first. Also, at the same gas station, gas went from 2.899 to 3.019 in just over a week. <b>OUCH!</b>