
The following table compares the fuel economies of different models of BMW 840i cars, across model years.
The annual fuel costs (shown in the right-hand columns) are calculated based on an estimated annual mileage of 15,000 miles,
of which 55% of the miles are city driving, and 45% of the miles are highway driving.
Annual Cost 1 assumes a fuel cost of $5.00 per gallon, while Annual Cost 2 assumes a fuel cost of $6.00 per gallon.
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2024 840i Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2023 840i Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2022 840i Coupe | Automatic (S8) | 6 | 25 | 23 | 30 | $2,918 | $3,502 |
| 2021 840i Coupe | Automatic (S8) | 6 | 25 | 23 | 30 | $2,918 | $3,502 |
| 2020 840i Coupe | Automatic (S8) | 6 | 25 | 23 | 30 | $2,918 | $3,502 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2024 840i xDrive Convertible | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2023 840i xDrive Convertible | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2022 840i xDrive Convertible | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| 2021 840i xDrive Convertible | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| 2020 840i xDrive Convertible | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2024 840i Convertible | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2023 840i Convertible | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2022 840i Convertible | Automatic (S8) | 6 | 25 | 22 | 29 | $3,038 | $3,646 |
| 2021 840i Convertible | Automatic (S8) | 6 | 25 | 22 | 29 | $3,038 | $3,646 |
| 2020 840i Convertible | Automatic (S8) | 6 | 24 | 22 | 29 | $3,038 | $3,646 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2024 840i xDrive Gran Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2023 840i xDrive Gran Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2022 840i xDrive Gran Coupe | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| 2021 840i xDrive Gran Coupe | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| 2020 840i xDrive Gran Coupe | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2024 840i xDrive Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2023 840i xDrive Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2022 840i xDrive Coupe | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| 2021 840i xDrive Coupe | Automatic (S8) | 6 | 23 | 20 | 27 | $3,312 | $3,975 |
| 2020 840i xDrive Coupe | Automatic (S8) | 6 | 23 | 21 | 27 | $3,214 | $3,857 |
| Model Year | Transmission | Cyl. | Combined MPG | City MPG |
Highway MPG |
Annual Cost 1 |
Annual Cost 2 |
|---|---|---|---|---|---|---|---|
| 2024 840i Gran Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2023 840i Gran Coupe | Automatic (S8) | 6 | 24 | 21 | 29 | $3,128 | $3,753 |
| 2022 840i Gran Coupe | Automatic (S8) | 6 | 25 | 22 | 29 | $3,038 | $3,646 |
| 2021 840i Gran Coupe | Automatic (S8) | 6 | 25 | 22 | 29 | $3,038 | $3,646 |
| 2020 840i Gran Coupe | Automatic (S8) | 6 | 24 | 22 | 29 | $3,038 | $3,646 |
Data source: Fuel Economy USA, Reference.