Just did round trip Charlotte to Atlanta and back. Decided to keep speed to 5 over for trip, probably averaged about 70 mph.

29mpg indicated on trip computer; 29.03 mpg calculated at fill up. And that included about 20 miles of around town plus some heavy traffic.

For perspective, same trip in a 4cyl CR-V yielded a bit over 22mpg, and a whole lot less fun...


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Combined, I get around 19-20. Highway, today I got 24 today going max 75-80MPH.

I'm also gassing it from dead stop to my desired speed, but I don't speed past 71MPH normally.

What are the EPA numbers for each vehicle?

Never mind, I looked it up...

Based on what I read, I should expect my 2006 4.4 to get no better than 20 MPG.

Yet my combined return (~60% Highway? - according to the computer) is 19.1.

Pure highway, at 75 - 80 I believe I am getting about 21 steady state?

But, no matter what the numbers, I have had my X5 for about 5-6 years now and I do not feel oppressed by the mileage or cost of gas. I go where I want, I fuel up and keep going. So, as many people would say, if you are buying a $65K vehicle, is the extra cost of a grand or two a year really that big a deal? I don't think so.

When filling the tank, and getting a $100 or more tab, if it bothers me, then I switch to another vehicle until the prices come back down a bit - or I just keep driving because I enjoy the car.

I realize I may be different because in all my life I have NEVER owned any vehicle that got better than 17 City and 25 Highway (EPA).

So again, why sweat it... If you want a car that drives like an X5 (which is heavy), you deal with the cost of gas, otherwise there is always the Acura with it's 5% better mileage with a smaller engine or some other vehicles to consider.

If I had to sacrifice some of the performance of the 5.0 to get the 20% boost in mileage (which might save me $500 a year) would it be worth it to me? Probably not... But of course everyone had different priorities and wants.

[QUOTE=X-ray Lima;906491]How come the 35d is so bad on fuel for a lot of you guys?? .../QUOTE]

I think it's a combination of the driving style and terrain. As noted previously, I'm only getting about 20 MPG currently, but that's with a heavy lead-foot and very hilly city streets.

my x5d is getting the mpg i expect, high teens around town and mid 20's on the hwy.

After owning my 2011 with 90,000 miles for one month I've gotten 31.7 MPG on a 120 mile trip on a 2-lane highway passing through 11 towns. I've done that trip 3 times and consistently got that MPG. Normally average just over 30 without trying to be easy on the pedal. I have the sport pkg with the 315 20" tires in the back which you would think would increase rolling resistance. Am considering exhaust mods to help with MPG's.