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Fuel Economy of BMW 840i Cars

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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.

Table 1. Fuel Economy of BMW 840i Coupe

Model YearTransmissionCyl. Combined
MPG
City
MPG
Highway
MPG
Annual
Cost 1
Annual
Cost 2
2024 840i CoupeAutomatic (S8)6 242129$3,128$3,753
2023 840i CoupeAutomatic (S8)6 242129$3,128$3,753
2022 840i CoupeAutomatic (S8)6 252330$2,918$3,502
2021 840i CoupeAutomatic (S8)6 252330$2,918$3,502
2020 840i CoupeAutomatic (S8)6 252330$2,918$3,502

Table 2. Fuel Economy of BMW 840i xDrive Convertible

Model YearTransmissionCyl. Combined
MPG
City
MPG
Highway
MPG
Annual
Cost 1
Annual
Cost 2
2024 840i xDrive ConvertibleAutomatic (S8)6 242129$3,128$3,753
2023 840i xDrive ConvertibleAutomatic (S8)6 242129$3,128$3,753
2022 840i xDrive ConvertibleAutomatic (S8)6 232027$3,312$3,975
2021 840i xDrive ConvertibleAutomatic (S8)6 232027$3,312$3,975
2020 840i xDrive ConvertibleAutomatic (S8)6 232027$3,312$3,975

Table 3. Fuel Economy of BMW 840i Convertible

Model YearTransmissionCyl. Combined
MPG
City
MPG
Highway
MPG
Annual
Cost 1
Annual
Cost 2
2024 840i ConvertibleAutomatic (S8)6 242129$3,128$3,753
2023 840i ConvertibleAutomatic (S8)6 242129$3,128$3,753
2022 840i ConvertibleAutomatic (S8)6 252229$3,038$3,646
2021 840i ConvertibleAutomatic (S8)6 252229$3,038$3,646
2020 840i ConvertibleAutomatic (S8)6 242229$3,038$3,646

Table 4. Fuel Economy of BMW 840i xDrive Gran Coupe

Model YearTransmissionCyl. Combined
MPG
City
MPG
Highway
MPG
Annual
Cost 1
Annual
Cost 2
2024 840i xDrive Gran CoupeAutomatic (S8)6 242129$3,128$3,753
2023 840i xDrive Gran CoupeAutomatic (S8)6 242129$3,128$3,753
2022 840i xDrive Gran CoupeAutomatic (S8)6 232027$3,312$3,975
2021 840i xDrive Gran CoupeAutomatic (S8)6 232027$3,312$3,975
2020 840i xDrive Gran CoupeAutomatic (S8)6 232027$3,312$3,975

Table 5. Fuel Economy of BMW 840i xDrive Coupe

Model YearTransmissionCyl. Combined
MPG
City
MPG
Highway
MPG
Annual
Cost 1
Annual
Cost 2
2024 840i xDrive CoupeAutomatic (S8)6 242129$3,128$3,753
2023 840i xDrive CoupeAutomatic (S8)6 242129$3,128$3,753
2022 840i xDrive CoupeAutomatic (S8)6 232027$3,312$3,975
2021 840i xDrive CoupeAutomatic (S8)6 232027$3,312$3,975
2020 840i xDrive CoupeAutomatic (S8)6 232127$3,214$3,857

Table 6. Fuel Economy of BMW 840i Gran Coupe

Model YearTransmissionCyl. Combined
MPG
City
MPG
Highway
MPG
Annual
Cost 1
Annual
Cost 2
2024 840i Gran CoupeAutomatic (S8)6 242129$3,128$3,753
2023 840i Gran CoupeAutomatic (S8)6 242129$3,128$3,753
2022 840i Gran CoupeAutomatic (S8)6 252229$3,038$3,646
2021 840i Gran CoupeAutomatic (S8)6 252229$3,038$3,646
2020 840i Gran CoupeAutomatic (S8)6 242229$3,038$3,646