Against 303 other V6 cars rated 1993–1995, the AT sits right on their 18.7 mpg average. Averaged over the years each was sold, the most economical engine since 1985, the 6.2L 8-cyl (1985–1992), does 18.7 mpg and the thirstiest, the 5L 8-cyl (1987), 17: $206 a year apart.
Every GMC AT engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 6.2L 8-cyl | 16.6 / 22 | 1985–1992 | $2,053 | |
| 4.3L 6-cyl | 15.3 / 20.4 | 1985–1995 | $2,194 | |
| 5L 8-cyl | 15 / 20 | 1987–1987 | $2,259 |
What that actually costs
| Measure | Value |
|---|---|
| Cost per mile (1995) | $0.178 |
| Fuel per year | $2,133 |
| Fuel over five years | $10,665 |
| Against other V6 cars, 1993–1995 | +$80 a year |
| EPA's own estimate | $3,913 a year |
City or highway — who is this car for
The 1995 GMC AT gives up 7 mpg in town: 22 on the highway against 15 in the city, $815 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (1995) | 15 mpg | $2,560 a year if you only drive in town |
| Highway | 22 mpg | $1,745 a year if you mostly commute |
| Gap | +7 mpg (47%) | Wide — this car dislikes traffic |
How the AT changed over the years
The AT peaked in 1989 at 18.5 mpg (15.5 city, 22.5 highway) and was at its thirstiest in 1990 at 17.5 — 1 mpg apart, or $118 a year in fuel between buying one year and the other. The 1995 car does 18.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 1995 | 15 / 22 | 1 | $2,133 | |
| 1994 | 15 / 22 | 1 | $2,133 | |
| 1993 | 15 / 22 | 1 | $2,133 | |
| 1992 | 16 / 21 | 2 | $2,133 | |
| 1991 | 16 / 20 | 2 | $2,133 | |
| 1990 | 15 / 21 | 2 | $2,194 | |
| 1989 | 15.5 / 22.5 | 2 | $2,076 | |
| 1988 | 16 / 21.5 | 2 | $2,133 | |
| 1987 | 15.5 / 20 | 2 | $2,194 | |
| 1986 | 16.5 / 20 | 2 | $2,133 | |
| 1985 | 16.5 / 20 | 2 | $2,133 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 19 EPA ratings of the GMC AT — 3 engines across 1985–1995. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $3,913. Full method.
Frequently asked questions
What mpg does the 1995 GMC AT get?
18 mpg combined, 15 city and 22 highway, per EPA. Across every year since 1985 the AT has averaged 17.9 mpg.
Is the 1995 AT more efficient than the 1994?
About the same: 18 against 18 mpg combined.
Which AT year has the best gas mileage?
The 1989, at 18.5 mpg combined (15.5 city, 22.5 highway).
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