1984 GMC Rally
13 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| G15/25 Rally 2WD | 13 | 16 | 14 | Regular Gasoline | 2-Wheel Drive | 4.1L 6-cyl | Automatic 3-spd |
| G15/25 Rally 2WD | 18 | 20 | 19 | Diesel | 2-Wheel Drive | 6.2L 8-cyl | Manual 4-spd |
| G15/25 Rally 2WD | 15 | 19 | 17 | Diesel | 2-Wheel Drive | 6.2L 8-cyl | Automatic 4-spd |
| G15/25 Rally 2WD | 11 | 15 | 13 | Regular Gasoline | 2-Wheel Drive | 5.7L 8-cyl | Automatic 4-spd |
| G15/25 Rally 2WD | 13 | 17 | 14 | Regular Gasoline | 2-Wheel Drive | 4.1L 6-cyl | Automatic 4-spd |
| G15/25 Rally 2WD | 17 | 20 | 18 | Diesel | 2-Wheel Drive | 6.2L 8-cyl | Manual 4-spd |
| G15/25 Rally 2WD | 16 | 22 | 18 | Diesel | 2-Wheel Drive | 6.2L 8-cyl | Automatic 4-spd |
| G15/25 Rally 2WD | 11 | 15 | 13 | Regular Gasoline | 2-Wheel Drive | 5.7L 8-cyl | Automatic 4-spd |
| G15/25 Rally 2WD | 12 | 15 | 13 | Regular Gasoline | 2-Wheel Drive | 5L 8-cyl | Automatic 4-spd |
| G15/25 Rally 2WD | 11 | 15 | 13 | Regular Gasoline | 2-Wheel Drive | 5L 8-cyl | Automatic 3-spd |
| G15/25 Rally 2WD | 13 | 15 | 14 | Regular Gasoline | 2-Wheel Drive | 4.1L 6-cyl | Manual 3-spd |
| G35 Rally 2WD | 10 | 12 | 11 | Regular Gasoline | 2-Wheel Drive | 5.7L 8-cyl | Automatic 4-spd |
| G35 Rally 2WD | 10 | 12 | 11 | Regular Gasoline | 2-Wheel Drive | 5.7L 8-cyl | Automatic 4-spd |