I know I read a thread somewhere on a difference in mileage on 17" tires. I checked a mile marker today and my 2004 w/17" wheels, gains 1/10th of a mile per mile. That's 10 miles per hundred - approx 40 miles per tank.
Third row seats are out.... found if I get up to speed quicker on hills and then back off, I use less gas than continually accelerating up the hill. Tried cruise today and the instant digital display seemed to stay in a steady range, rather than jumping all over the place.
We got 425 miles on 20.7 gals on the last tank, not even calculating for the extra .10 miles per mile. That's 20.53 mpg with a mix of hwy (170 miles), pulling a loaded 8x5 trailer on about 8 trips around town, and burb errands. In TX heat with the a/c going.
I keep the tach pretty steady @ 2000 and try to keep it between 65 and 70 on the hwy. I've noticed alot of Sequoia owners here like to haul @_ _ averaging 75 mph
Read somewhere that 75 mph costs you 25% more in fuel. That's quite a bit.
Have less than 2k miles now, and we're hoping for better mileage when broken in.