GMC · 1984–1988 · Gas
GMC S15 Cab Chassis MPG by year
The EPA has rated 5 model years of the GMC S15 Cab Chassis, from 1984 to 1988. The most fuel-efficient year is the 1987, at 17 MPG combined in its best configuration. The best 1988 model is 7% less efficient than the best 1984 model (14 vs. 15 MPG). The 1988 model is 15% less efficient than the median special purpose vehicle that year (14 vs. 16.5 MPG).
Combined MPG by model year
- S15 Cab Chassis, most efficient version
- Range across configurations
- Class median
Shaded band: range across that year's configurations. Class median: same-year models in the same class, rated in MPG. Click a point to open that model year; the table below lists every value.
Every S15 Cab Chassis model year
| Year | Type | Best combined | City / Hwy | Class median | Range | Configs | Fuel / yr |
|---|---|---|---|---|---|---|---|
| 1988 | Gas | 14 MPG | 14 / 15 | 16.5 | — | 2 | $3,321 |
| 1987 | Gas | 17 MPG lowest 13 |
17 / 17 | 17 | — | 3 | $2,735 |
| 1986 | Gas | 17 MPG lowest 13 |
17 / 18 | 17.5 | — | 3 | $2,735 |
| 1985 | Gas | 17 MPG lowest 13 |
17 / 17 | 17 | — | 4 | $2,735 |
| 1984 | Gas | 15 MPG lowest 13 |
15 / 16 | 17 | — | 4 | $3,100 |
Fuel cost uses today's default prices for every year so model years compare like for like. Sort any column.
Compare S15 Cab Chassis model years
See how much a newer S15 Cab Chassis would save over an older one.
Models similar to the GMC S15 Cab Chassis
Frequently asked questions
Which GMC S15 Cab Chassis year has the best fuel economy?
The 1985 GMC S15 Cab Chassis, rated up to 17 MPG combined. At 15,000 miles a year with $3.10/gal regular gas, that works out to about $2,735 a year.
Which GMC S15 Cab Chassis year has the worst fuel economy?
The 1988 model, whose most efficient version is rated 14 MPG combined (about $3,321 a year to fuel).
What is the fuel economy of the latest GMC S15 Cab Chassis?
The 1988 GMC S15 Cab Chassis is rated up to 14 MPG combined.