on a recent trip of 350 miles, my 1993 850glt (non-turbo) used just under 12 gallons of gas, this was with the AC on! (a little bit under 30mpg)!! 310 of these miles were pure highway, the other 40 miles were mixed city and rural highway!

how well does this compare to your 850's?
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-- current ride: '93 850 glt

my 93 850 GLT gets about 21 in the city and 30 on the highway

My 850 T5 wagon gets 23.5 mils per US gallon at a constant 80mph. Dropped to 15mpg at 110mph uphill in France!

I managed to get 31.83 mi/gal, country road driving, steady speed (65 mi/hr).

Getting high-20's on mostly highway miles is very reasonable. I wouldn't question it, though the others posters are right about some errors in single-tank calculations.

Of more importance might be factors like your speed, wind conditions, road surface etc. If you were driving 55mph with a 20mph tailwind on brand new smooth asphalt, I would believe even higher mpg!

Gerald C

Sounds like great mileage, but I have always been highly suspicious of single-tank mileage claims.

If I know I am going on a long trip, and have to fill up before getting on the highway, I typically cram as much fuel into the tank as possible, cause, I reason, by the time the fuel starts to expand, I will have burned off that extra. When I get back from my long trip, and I fill up, I typically only fill the tank 'till it clicks-off the first time, 'cause I know I am going home and just parking the car.

The difference between the two methods of filling could be a gallon, or more, making any mileage calculation, based upon single tank, meaningless.

I know, I know . . . I'm going to get responses that "I always fill my tank in the exact same way (I go to the exact same pump, use the exact same hose, only fill up when the barametric pressure is 29.98, etc., etc.), so I KNOW that I am getting an accurate mileage from my single tank methodology."

I don't believe it.

There is so much variability in when the gas pump clicks-off that, unless you are measuring over multiple tanks, single-tank mileage calculations are irrelevant.

My wife's 850 T5 wagon gets 28 on the highway (with A/C on), about 20 in city

My 95 850 turbo get about 26-27 mpg on the highway

In city driving 15-18 mpg, say 17.5 mpg.

my 97 turbo gets about 25 on the highway.

1995 850 GLT, I get 30 mpg on pure highway driving, recorded many times. City driving drops this to 20-21 mpg, staying in traffic - don't ask
Yuri