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2026 BMW 8 Series mpg

Combined mpg, 840i RWD

24mpg

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12,000 miles a year. Gas $3.20.

1020304050Median 19.58 Series: 24 mpg
30 coupes (2026), one trim per model: the cheapest with a rating. Median 19.5 mpg.
2026 BMW 8 Series mpg by trim
TrimEngineDriveCity mpgHwy mpgCombinedTank, galMiles per tankCost a year
840i Coupe RWD3.0L 6cylRWD21292418.0432$1,600
840i Gran Coupe RWD3.0L 6cylRWD21292418.0432$1,600
840i RWD3.0L 6cylRWD21292418.0432$1,600
840i xDrive AWD3.0L 6cylAWD21292418.0432$1,600
840i xDrive Coupe3.0LAWD21292418.0432$1,600
840i xDrive Gran Coupe AWD3.0L 6cylAWD21292418.0432$1,600
840i Convertible RWD3.0L 6cylRWD21292418.0432$1,600
840i xDrive Convertible3.0LAWD21292418.0432$1,600
M850i xDrive AWD4.4L 8cylAWD17241918.0342$2,021
M850i xDrive Coupe4.4LAWD17241918.0342$2,021
M850i xDrive Gran Coupe AWD4.4L 8cylAWD17241918.0342$2,021
M850i xDrive Convertible4.4LAWD17241918.0342$2,021

Fuel cost

840i RWD, 24 mpg combined.

Per year
$1,600
Per month
$133
Per mile
13.3 cents
Fill the tank
$57.60
  • Best mpg: 840i Coupe RWD, 24 mpg. $1,600 a year.
  • Top trim: M850i xDrive Convertible. $2,021 a year. $421 more than the 840i RWD.

Trip cost

840i RWD: 29 mpg highway
TripGallonsCost
100 miles3.4$11.03
300 miles10.3$33.10
500 miles17.2$55.17
1,000 miles34.5$110

Commute cost

Per month
$116
Per year
$1,387
Miles a month
867

840i RWD. 20 miles each way, 5 days a week.

Is 24 mpg good? Yes. Beats 52% of 2026 cars.

MPG by year

20212223242520192021202320252026
8 Series: combined mpg of the cheapest rated trim, 2019 to 2026.

8 Series by year: price, hp, mpg, size

Rivals

2026 BMW 8 Series and rivals
CarCheapest trimCombined mpgCompare
2026 BMW 8 Series840i RWD24 mpg
2026 Lexus LCLC 500 RWD18 mpgCompare
2026 Mercedes-Benz AMG GTAMG GT 43 4-Door Coupe21 mpgCompare
2026 BMW M4Coupe RWD19 mpg
2026 Lotus EmiraTurbo SE RWD21 mpgCompare
2026 Chevrolet Corvette E-RayCorvette E-Ray AWD19 mpg

What this cannot tell you

EPA ratings. Your own mpg will differ.

Gas prices change by state and by week.

How values are checked