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2021 BMW 8 Series mpg

Combined mpg, 840i Gran Coupe RWD

25mpg

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12,000 miles a year. Gas $3.20.

10203040506070Median 268 Series: 25 mpg
81 sedans (2021), one trim per model: the cheapest with a rating. Median 26 mpg.
2021 BMW 8 Series mpg by trim
TrimEngineDriveCity mpgHwy mpgCombinedTank, galMiles per tankCost a year
840i Gran Coupe RWD3.0L 6cylRWD22292518.0450$1,536
840i RWD3.0L 6cylRWD23302518.0450$1,536
840i RWD3.0L 6cylRWD22292518.0450$1,536
840i xDrive Gran Coupe AWD3.0L 6cylAWD20272318.0414$1,670
840i xDrive AWD3.0L 6cylAWD20272318.0414$1,670
840i xDrive AWD3.0L 6cylAWD20272318.0414$1,670
M850i xDrive Gran Coupe AWD4.4L 8cylAWD17252018.0360$1,920
M850i xDrive AWD4.4L 8cylAWD17252018.0360$1,920
M8 Gran Coupe AWD4.4L 8cylAWD17252018.0360$1,920
M850i xDrive AWD4.4L 8cylAWD17241918.0342$2,021

Fuel cost

840i Gran Coupe RWD, 25 mpg combined.

Per year
$1,536
Per month
$128
Per mile
12.8 cents
Fill the tank
$57.60
  • Top trim: M850i xDrive AWD. $2,021 a year. $485 more than the 840i Gran Coupe RWD.

Trip cost

840i Gran Coupe 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
$111
Per year
$1,331
Miles a month
867

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

Is 25 mpg good? Yes. Beats 58% 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

2021 BMW 8 Series and rivals
CarCheapest trimMPG or range
2021 BMW 8 Series840i Gran Coupe RWD25 mpg
2021 Audi S7Prestige AWD22 mpg
2021 Audi A8L 55 TFSI AWD21 mpg
2021 BMW 7 Series740i RWD25 mpg
2021 Porsche PanameraRWD20 mpg
2021 Porsche TaycanRWD200 mi range

What this cannot tell you

EPA ratings. Your own mpg will differ.

Gas prices change by state and by week.

How values are checked