Against 266 other V8 cars rated 2017–2019, the M6 sits right on their 17.4 mpg average. Averaged over the years each was sold, the most economical engine since 1989, the 4.4L 8-cyl (2012–2019), does 16.9 mpg and the thirstiest, the 3.5L 6-cyl (1989), 12: $928 a year apart.
Every BMW M6 engine, compared
Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 4.4L 8-cyl | 14.9 / 21.8 | 2012–2019 | $2,272 | |
| 5L 10-cyl | 11 / 17 | 2006–2010 | $2,954 | |
| 3.5L 6-cyl | 9 / 17 | 1989–1989 | $3,200 |
What that actually costs
Against its rivals in the same model years, the Lexus RC gets 22.2 mpg, the Audi RS 5 21 mpg and the Audi RS 3 22.3 mpg, next to 17 mpg for the 2019 M6. The M6 costs the most of them to run: $537 a year more than the Audi RS 3.
| Measure | Value |
|---|---|
| Cost per mile (2019) | $0.188 |
| Fuel per year | $2,259 |
| Fuel over five years | $11,295 |
| Against other V8 cars, 2017–2019 | +$52 a year |
| EPA's own estimate | $5,200 a year |
City or highway — who is this car for
The 2019 BMW M6 gives up 7 mpg in town: 22 on the highway against 15 in the city, $815 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2019) | 15 mpg | $2,560 a year if you only drive in town |
| Highway | 22 mpg | $1,745 a year if you mostly commute |
| Gap | +7 mpg (47%) | Wide — this car dislikes traffic |
How the M6 changed over the years
The M6 peaked in 2019 at 17 mpg (15 city, 22 highway) and was at its thirstiest in 1989 at 12 — 5 mpg apart, or $941 a year in fuel between buying one year and the other.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2019 | 15 / 22 | 1 | $2,259 | |
| 2018 | 15 / 22 | 1 | $2,259 | |
| 2017 | 15 / 22 | 1 | $2,259 | |
| 2016 | 15 / 22 | 1 | $2,259 | |
| 2015 | 15 / 22 | 1 | $2,259 | |
| 2014 | 15 / 22 | 1 | $2,259 | |
| 2013 | 15 / 22 | 1 | $2,259 | |
| 2012 | 14 / 20 | 1 | $2,400 | |
| 2010 | 11 / 17 | 1 | $2,954 | |
| 2009 | 11 / 17 | 1 | $2,954 | |
| 2008 | 11 / 17 | 1 | $2,954 | |
| 2007 | 11 / 17 | 1 | $2,954 | |
| 2006 | 11 / 17 | 1 | $2,954 | |
| 1989 | 9 / 17 | 1 | $3,200 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 14 EPA ratings of the BMW M6 — 3 engines across 1989–2019. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $5,200. Full method.
Frequently asked questions
What mpg does the 2019 BMW M6 get?
17 mpg combined, 15 city and 22 highway, per EPA. Across every year since 1989 the M6 has averaged 15.1 mpg.
Is the 2019 M6 more efficient than the 2018?
About the same: 17 against 17 mpg combined.
Which M6 year has the best gas mileage?
The 2019, at 17 mpg combined (15 city, 22 highway), which is also the latest model year we hold.
Does the M6 get better gas mileage than the Lexus RC?
No: 17 mpg for the 2019 M6 against 22.2 for the 2020 Lexus RC, about $529 a year more to run.
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