2018 BMW 6 Series
10 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| 640i Convertible | 20 | 29 | 23 | Premium Gasoline | Rear-Wheel Drive | 3L 6-cyl Turbo | Automatic (S8) |
| 640i Gran Coupe | 20 | 29 | 23 | Premium Gasoline | Rear-Wheel Drive | 3L 6-cyl Turbo | Automatic (S8) |
| 640i xDrive Convertible | 19 | 28 | 22 | Premium Gasoline | All-Wheel Drive | 3L 6-cyl Turbo | Automatic (S8) |
| 640i xDrive Gran Coupe | 19 | 28 | 22 | Premium Gasoline | All-Wheel Drive | 3L 6-cyl Turbo | Automatic (S8) |
| 640i xDrive Gran Turismo | 20 | 28 | 23 | Premium Gasoline | All-Wheel Drive | 3L 6-cyl Turbo | Automatic (S8) |
| 650i Convertible | 17 | 25 | 20 | Premium Gasoline | Rear-Wheel Drive | 4.4L 8-cyl Turbo | Automatic (S8) |
| 650i Gran Coupe | 17 | 25 | 20 | Premium Gasoline | Rear-Wheel Drive | 4.4L 8-cyl Turbo | Automatic (S8) |
| 650i xDrive Convertible | 16 | 25 | 19 | Premium Gasoline | All-Wheel Drive | 4.4L 8-cyl Turbo | Automatic (S8) |
| 650i xDrive Gran Coupe | 16 | 25 | 19 | Premium Gasoline | All-Wheel Drive | 4.4L 8-cyl Turbo | Automatic (S8) |
| Alpina B6 xDrive Gran Coupe | 16 | 25 | 19 | Premium Gasoline | All-Wheel Drive | 4.4L 8-cyl Turbo | Automatic (S8) |