xjdropper

your spedo and aren't necasarily acurate to each other, there is usually a variance. The only good way to judge your odometer is to take a good high way trip that you will not be deviating for gas station etc. at a mile marker reset your trip meter and run it out as long as you can to get a good measure. 100 miles is best but I have ran a 500 mile test on a toyota. hit a hundred then take 100 and devide it by what your trip meter is showing. this will give you the multiplier to use
multiplier x recorded mpg (gas gallons devided by "miles driven" shown by odometer) = actual milage.
The same multiplier is usually good enough for use on the speedometer

89Laredo

100 miles = 5.62 gallons = 17.8mpg

Tural

here's what i've found out. the speedo is off with stock tires. by not too much. the only way i got the same reading from the odometer as i did from the mile markers and gps, is worn down 30" tires. they're about 29" tall.

Butch00

218000 miles haven't changed any filters or anything, and I get right at 18mpg.

mentalbreakdown00

Dunno, been 160 miles on just a smidgen over 1/2 tank. Haven't had mine long enough to even use a tankful.

Mosescase

around 16 mpg here

chafe76

1997 4.0 auto. 262000 miles 4.56 gears 35" tires right about 14 mpg

Brando26

91 limited 4.0 HO depending on driving and 4x4 or not i get between 17 and 18.2
all stock. synth blend oil, new air filter

hal93

Mine is about 17 in the city and maybe 23 on the highway. I have a rough country 3.5in lift with 31x10.5x15r Hankook dynapro mt tires

MECRAM

14.5 per tank with combo driving

robdiddy

About 17 mpg, but I do mostly city driving .

The Rooster

5mpg... I think I may have a problem now....