BMW M6 Convertible
16.5 MPG The 2018 BMW M6 Convertible is EPA-rated at 16.5 MPG combined (14.5 city / 21 highway). Over 15,000 miles a year that is about 909 gallons, $2909 a year in fuel, or $0.194 per mile at $3.20/gal.
Across its full 2007–2018 run it averages 15.2 MPG, improving by 3.5 MPG over 11 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.152 | $1515 | $2273 | $3030 |
| $3.00/gal | $0.182 | $1818 | $2727 | $3636 |
| $3.20/gal | $0.194 | $1939 | $2909 | $3879 |
| $3.50/gal | $0.212 | $2121 | $3182 | $4242 |
| $4.00/gal | $0.242 | $2424 | $3636 | $4848 |
| $4.50/gal | $0.273 | $2727 | $4091 | $5455 |
| $5.00/gal | $0.303 | $3030 | $4545 | $6061 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2018 | 16.5 MPG | 14.5 | 21 | $4675 | 538 | 2 |
| 2017 | 16.5 MPG | 14.5 | 21 | $4675 | 536 | 2 |
| 2016 | 16.5 MPG | 14.5 | 21 | $4675 | 535 | 2 |
| 2015 | 16.5 MPG | 14.5 | 21 | $4675 | 535 | 2 |
| 2014 | 16.5 MPG | 14.5 | 21 | $4675 | 535 | 2 |
| 2013 | 16.5 MPG | 14.5 | 21 | $4675 | 534 | 2 |
| 2012 | 16 MPG | 14 | 20 | $4800 | 555 | 1 |
| 2010 | 13 MPG | 11 | 17 | $5950 | 684 | 2 |
| 2009 | 13 MPG | 11 | 17 | $5950 | 684 | 2 |
| 2008 | 13 MPG | 11 | 17 | $5950 | 684 | 2 |
| 2007 | 13 MPG | 11 | 17 | $5950 | 684 | 2 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 229 subcompact cars models tracked here, the BMW M6 Convertible ranks 212 on current figures, against a class average of 24.2 MPG.
Closest more-efficient alternatives in the same class: Aston Martin Rapide S (17), BMW 650ci Convertible (17), BMW M8 Competition Convertible (17), BMW M8 Competition Coupe (17), Mercedes-Benz CLK55 AMG (17).
Tailpipe CO₂ is rated at 538 grams per mile, which works out to roughly 8.1 tonnes a year at 15,000 miles.
Questions
What MPG does the BMW M6 Convertible get?
The 2018 BMW M6 Convertible is rated at 16.5 MPG combined by the EPA — 14.5 city and 21 highway. Across all 11 model years in the database it averages 15.2 MPG, ranging from 13 to 17 depending on year and trim.
How much does a BMW M6 Convertible cost in fuel per year?
At 16.5 MPG and 15,000 miles a year, it burns about 909 gallons — roughly $2909 a year with fuel at $3.20 a gallon, or $0.194 per mile. The EPA's own published annual figure for the 2018 model is $4675.
Has the BMW M6 Convertible become more efficient over time?
Yes. It has gone from 13 MPG in 2007 to 16.5 in 2018 — an improvement of 3.5 MPG, or 27% across 11 model years.
Is the BMW M6 Convertible efficient for its class?
It ranks 212 of 229 in the Subcompact Cars class on current figures, against a class average of 24.2 MPG. That is 7.7 worse than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.