2020 BMW 8 Series mpg
Combined mpg, 840i Gran Coupe RWD
24mpg
- 22 city, 29 highway.
- Top 48% of 25 convertibles (2020).
- 14 trims: 20 to 25 mpg.
12,000 miles a year. Gas $3.20.
| Trim | Engine | Drive | City mpg | Hwy mpg | Combined | Tank, gal | Miles per tank | Cost a year |
|---|---|---|---|---|---|---|---|---|
| 840i RWD | 3.0L 6cyl | RWD | 23 | 30 | 25 | 18.0 | 450 | $1,536 |
| 840i Gran Coupe RWD | 3.0L 6cyl | RWD | 22 | 29 | 24 | 18.0 | 432 | $1,600 |
| 840i xDrive Gran Coupe | 3.0L | AWD | 22 | 29 | 24 | 18.0 | 432 | $1,600 |
| 840i RWD | 3.0L 6cyl | RWD | 22 | 29 | 24 | 18.0 | 432 | $1,600 |
| 840i xDrive Gran Coupe AWD | 3.0L 6cyl | AWD | 20 | 27 | 23 | 18.0 | 414 | $1,670 |
| 840i xDrive AWD | 3.0L 6cyl | AWD | 21 | 27 | 23 | 18.0 | 414 | $1,670 |
| 840i xDrive AWD | 3.0L 6cyl | AWD | 20 | 27 | 23 | 18.0 | 414 | $1,670 |
| M850i xDrive Gran Coupe AWD | N/A | AWD | 20 to 21 | 27 | 23 | 18.0 | 414 | $1,670 |
| M8 AWD | N/A | AWD | 20 to 21 | 27 | 23 | 18.0 | 414 | $1,670 |
| M8 Competition AWD | N/A | AWD | 20 to 21 | 27 | 23 | 18.0 | 414 | $1,670 |
| M8 Competition Gran Coupe AWD | N/A | AWD | 20 to 21 | 27 | 23 | N/A | N/A | $1,670 |
| M8 Gran Coupe AWD | N/A | AWD | 20 to 21 | 27 | 23 | N/A | N/A | $1,670 |
| M850i xDrive AWD | 4.4L 8cyl | AWD | 18 | 25 | 20 | 18.0 | 360 | $1,920 |
| M850i xDrive AWD | 4.4L 8cyl | AWD | 17 | 25 | 20 | 18.0 | 360 | $1,920 |
Fuel cost
840i Gran Coupe RWD, 24 mpg combined.
- Per year
- $1,600
- Per month
- $133
- Per mile
- 13.3 cents
- Fill the tank
- $57.60
- Best mpg: 840i RWD, 25 mpg. $1,536 a year.
- Top trim: M850i xDrive AWD. $1,920 a year. $320 more than the 840i Gran Coupe RWD.
Trip cost
| Trip | Gallons | Cost |
|---|---|---|
| 100 miles | 3.4 | $11.03 |
| 300 miles | 10.3 | $33.10 |
| 500 miles | 17.2 | $55.17 |
| 1,000 miles | 34.5 | $110 |
Commute cost
- Per month
- $116
- Per year
- $1,387
- Miles a month
- 867
840i Gran Coupe RWD. 20 miles each way, 5 days a week.
Is 24 mpg good? Yes. Beats 52% of 2026 cars.
MPG by year
Rivals
| Car | Cheapest trim | Combined mpg |
|---|---|---|
| 2020 BMW 8 Series | 840i Gran Coupe RWD | 24 mpg |
| 2020 Mercedes-Benz SL-Class | SL 450 Roadster RWD | 22 mpg |
| 2020 Porsche 911 | Carrera RWD | 20 mpg |
What this cannot tell you
EPA ratings. Your own mpg will differ.
Gas prices change by state and by week.
- 2 or more sources
- 1 source
- Model-level, rule or estimate
- Sources disagree