1988 BMW 6 Series
3 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| 6 Series | 9 | 17 | 12 | Premium Gasoline | Rear-Wheel Drive | 3.5L 6-cyl | Manual 5-spd |
| 6 Series | 14 | 19 | 15 | Regular Gasoline | Rear-Wheel Drive | 3.4L 6-cyl | Manual 5-spd |
| 6 Series | 13 | 17 | 14 | Regular Gasoline | Rear-Wheel Drive | 3.4L 6-cyl | Automatic 4-spd |