[BrianKeith01]

Hey all, I'm a first time poster to this forum. Pretty active on customtacos.com with my tacoma. Joined this forum because I have a question about my wife's car.

Wife has a 2001 Toyota Highlander. Its the 4cyl with an auto tranny, I think its got around 95000 miles on it.

With fuel prices the way they are, of course my question is concerning fuel mileage. I've read through around 9 pages of this forum reading that many V6 highlanders are getting around 23-26 MPG's. My 4cyl has a HIGHWAY BEST of 21.4 MPG. Anyone know why? KBB.com says I should be getting around 27MPG on highway and 22city. Average city driving is around 17mpg, average highway driving is around 19.5mpg. We recently went on a 900 mile round trip from souther cali to arizona. Mostly flat grounds, cruise control set around 70mph, we averaged 21.4.

I purchased the vehicle used with around 80K miles on it, its never gotten more than about 20mpg on the highway. Before the trip, i checked tire pressure and changed the spark plugs and air filter...i was happy to boost the mpg's up 1.5. after reading through these forums i'm not so happy anymore.

Any suggestions as to why my 4cyl is getting less mpg's than most v6's?

thanks for any help.
brian