[Missduvy]

Originally Posted by dmann33

But - Not compared to a 2010 GLS550 that missduvey used to have. The x7 is over 3mpg better. Despite the x7’s smaller tank, it still has a greater range between fill ups than the ‘10 GLS550. The mpg savings adds up.

My most recent GL550 was a 2016. I didn’t notice much of a difference in gas milage or tank size in either one though.

[dmann33]

Originally Posted by LittleJoe

GLS 550 = 14.2 mpg

X7 50i = 15.1 mpg

Both have V8 engines.

MB would have loved to have gotten that good of mileage in 2010. I don't have a dog in this. Missduvey reported having to fill up much less frequently in her 2010 550 than her new x7. However, that shouldn't be the case unless something is wrong or awry. You said it was just because of the smaller tank, but the x7 has a greater range despite the smaller tank. the fuel consumption is 3mpg better prior GLS.

14 vs 17 or 12 vs 15

Cheers!

[drodnyc]

those are still horrible numbers for my type of riding.. I have a heavy foot and doing 100 miles round trip each day of the week is not something I want to do an an 8. The 40i has plenty of power for this vehicle. plus it's not a sports car and it won't handle like the X5. but overall a great vehicle.