BMW 8 series fuel consumption
Year-to-year deviations of actual owner-reported average fuel consumption from advertised values
| Year | Gasoline cars | |||
|---|---|---|---|---|
| All carmakers | BMW 8 series | |||
| 1990 | +5% | +13% | ||
| Show all years | ||||
| 1991 | +4% | +13% | ||
| 1992 | +5% | +13% | ||
| 1993 | +5% | +13% | ||
| 1994 | +6% | +13% | ||
| 1995 | +5% | +13% | ||
| 1996 | +4% | +13% | ||
| 2018 | +28% | +22% | ||
| 2019 | +28% | +22% | ||
| 2020 | +27% | +22% | ||
| 2021 | +26% | +22% | ||
See below for the actual consumption of generations and versions of BMW 8 series.
BMW 8 series 2018 coupe fuel economy
| Average advertised fuel consumption for petrol engines | 27.7 MPG 8.5 l/100km |
| Average real-world fuel consumption for petrol engines | 18.8 MPG 12.5 l/100km |
| Average real gasoline consumption difference * | +19% |
| Average advertised fuel consumption for diesel engines | 37.9 MPG 6.2 l/100km |
The table below shows the real and claimed fuel consumption and the differences for specific versions.
| Modification | Claimed consumption | Real consumption |
|---|---|---|
| 3.0 liter petrol engine | ||
| BMW 840i 340 HP automatic | 32.2 MPG 7.3 l/100km |
|
| BMW 840i xDrive 340 HP 4x4 automatic | 30.5 MPG 7.7 l/100km |
|
| 3.0 liter diesel engine | ||
| BMW 840d xDrive 320 HP 4x4 automatic | 37.9 MPG 6.2 l/100km |
|
| 4.4 liter petrol engine | ||
| BMW M850i xDrive 530 HP 4x4 automatic | 22.4 MPG 10.5 l/100km |
18.8 MPG 12.5 l/100km+19% |
BMW 8 series 2018 cabrio fuel economy
| Average advertised fuel consumption for petrol engines | 27.9 MPG 8.4 l/100km |
| Average real-world fuel consumption for petrol engines | 18.8 MPG 12.5 l/100km |
| Average real gasoline consumption difference * | +25% |
| Average advertised fuel consumption for diesel engines | 37.3 MPG 6.3 l/100km |
The table below shows the real and claimed fuel consumption and the differences for specific versions.
| Modification | Claimed consumption | Real consumption |
|---|---|---|
| 3.0 liter petrol engine | ||
| BMW 840i 340 HP 4x4 automatic | 31.4 MPG 7.5 l/100km |
|
| BMW 840i xDrive 340 HP 4x4 automatic | 30.2 MPG 7.8 l/100km |
|
| 3.0 liter diesel engine | ||
| BMW 840d xDrive 320 HP 4x4 automatic | 37.3 MPG 6.3 l/100km |
|
| 4.4 liter petrol engine | ||
| BMW M850i xDrive 530 HP 4x4 automatic | 23.5 MPG 10.0 l/100km |
18.8 MPG 12.5 l/100km+25% |
BMW 8 series 1989 coupe fuel economy
| Average advertised fuel consumption for petrol engines | 17.5 MPG 13.4 l/100km |
| Average real-world fuel consumption for petrol engines | 15.8 MPG 14.9 l/100km |
| Average real gasoline consumption difference * | +6% |
According to advertised fuel consumption, a BMW 8 series 1989 with automatic transmission consumes on average 0.3 liters per 100 km or 2% less fuel than similar versions with manual gearbox.
Compared to similar cars of other manufacturers, the BMW 8 series advertised fuel economy is slightly worse than average, but according to available user reports on actual consumption, real fuel economy is one of the worst.
Of all modifications the best advertised fuel economy in its class has BMW 8 series with 4.0 petrol engine and automatic transmission (BMW 840 Ci 286 HP).
The table below shows the real and claimed fuel consumption and the differences for specific versions.
| Modification | Claimed consumption | Real consumption |
|---|---|---|
| 4.0 liter petrol engine | ||
| BMW 840 Ci 286 HP automatic | 21.4 MPG 11.0 l/100km |
|
| BMW 840i 4.0 286 HP manual | 18.4 MPG 12.8 l/100km |
|
| 4.4 liter petrol engine | ||
| BMW 840 Ci 286 HP manual | 18.1 MPG 13.0 l/100km |
|
| BMW 840 Ci 286 HP automatic | 18.1 MPG 13.0 l/100km |
|
| 5.0 liter petrol engine | ||
| BMW 850i 300 HP manual | 18.1 MPG 13.0 l/100km |
16.3 MPG 14.4 l/100km+11% |
| BMW 850i 300 HP automatic | 18.1 MPG 13.0 l/100km |
15.8 MPG 14.9 l/100km+15% |
| BMW 850 Ci 300 HP manual | 18.1 MPG 13.0 l/100km |
|
| BMW 850 Ci 300 HP automatic | 18.1 MPG 13.0 l/100km |
16.0 MPG 14.7 l/100km+13% |
| BMW 850 Ci 300 HP automatic | 16.8 MPG 14.0 l/100km |
|
| 5.4 liter petrol engine | ||
| BMW 850Ci 5.4 326 HP automatic | 16.8 MPG 14.0 l/100km |
|
| 5.6 liter petrol engine | ||
| BMW 850 CSi 381 HP manual | 13.1 MPG 18.0 l/100km |
13.6 MPG 17.3 l/100km-4% |
* - Difference between advertised and user reported fuel economy has been calculated taking into account only those car versions for which information is available both on the fuel consumption specified by the manufacturer and reported by users.