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2025 BMW M8 mpg

Combined mpg, Competition Coupe AWD

17mpg

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12,000 miles a year. Gas $3.20.

1015202530Median 19M8: 17 mpg
32 coupes (2025), one trim per model: the cheapest with a rating. Median 19 mpg.
2025 BMW M8 mpg by trim
TrimEngineDriveCity mpgHwy mpgCombinedTank, galMiles per tankCost a year
8 Series 840i Gran Coupe RWD3.0L 6cylRWD212924N/AN/A$1,600
8 Series 840i RWD3.0L 6cylRWD212924N/AN/A$1,600
8 Series 840i xDrive AWD3.0L 6cylAWD212924N/AN/A$1,600
8 Series 840i xDrive Gran Coupe AWD3.0L 6cylAWD212924N/AN/A$1,600
8 Series M850i xDrive AWD4.4L 8cylAWD17241920.1382$2,021
8 Series M850i xDrive Gran Coupe AWD4.4L 8cylAWD17241920.1382$2,021
Competition Coupe AWD4.4L 8cylAWD15221720.1342$2,259
Competition AWD4.4L 8cylAWD15221720.1342$2,259
Competition Gran Coupe AWD4.4L 8cylAWD15221720.1342$2,259
Competition Convertible AWD4.4L 8cylAWD15221720.1342$2,259

Fuel cost

Competition Coupe AWD, 17 mpg combined.

Per year
$2,259
Per month
$188
Per mile
18.8 cents
Fill the tank
$64.32
  • Best mpg: 8 Series 840i Gran Coupe RWD, 24 mpg. $1,600 a year.
  • Top trim: Competition Convertible AWD. $2,259 a year. Same as the Competition Coupe AWD.

Trip cost

Competition Coupe AWD: 22 mpg highway
TripGallonsCost
100 miles4.5$14.55
300 miles13.6$43.64
500 miles22.7$72.73
1,000 miles45.5$145

Commute cost

Per month
$163
Per year
$1,958
Miles a month
867

Competition Coupe AWD. 20 miles each way, 5 days a week.

Is 17 mpg good? No. Beats 7% of 2026 cars.

MPG by year

161718202020212022202320242025
M8: combined mpg of the cheapest rated trim, 2020 to 2025.

M8 by year: price, hp, mpg, size

Rivals

2025 BMW M8 and rivals
CarCheapest trimCombined mpgCompare
2025 BMW M8Competition Coupe AWD17 mpg
2025 Maserati GranTurismoCoupe AWD21 mpgCompare
2025 Porsche 911Carrera RWD21 mpgCompare

What this cannot tell you

EPA ratings. Your own mpg will differ.

Gas prices change by state and by week.

How values are checked