MPG AtlasGeneral Motors MPG by model
1 General Motors models with EPA ratings from 1989 to 1989 (1 trims). The most efficient General Motors on record is the 1989 Coachbuilder Wagon at 18 MPG combined.
All General Motors models
| Model | Years | Trims | Best MPG | Best trim |
|---|---|---|---|---|
| General Motors Coachbuilder Wagon | 1989 | 1 | 18 | 1989 Coachbuilder Wagon |