Mercedes-Benz SLK55 AMG
22 MPG The 2015 Mercedes-Benz SLK55 AMG is EPA-rated at 22 MPG combined (19 city / 28 highway). Over 15,000 miles a year that is about 682 gallons, $2182 a year in fuel, or $0.145 per mile at $3.20/gal.
Across its full 2005–2015 run it averages 18.6 MPG, improving by 6 MPG over 10 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 | $0.114 | $1136 | $1705 | $2273 |
| $3.00/gal | $0.136 | $1364 | $2045 | $2727 |
| $3.20/gal | $0.145 | $1455 | $2182 | $2909 |
| $3.50/gal | $0.159 | $1591 | $2386 | $3182 |
| $4.00/gal | $0.182 | $1818 | $2727 | $3636 |
| $4.50/gal | $0.205 | $2045 | $3068 | $4091 |
| $5.00/gal | $0.227 | $2273 | $3409 | $4545 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2015 | 22 MPG | 19 | 28 | $3500 | 401 | 1 |
| 2014 | 22 MPG | 19 | 28 | $3500 | 401 | 1 |
| 2013 | 22 MPG | 19 | 28 | $3500 | 401 | 1 |
| 2012 | 22 MPG | 19 | 28 | $3500 | 404 | 1 |
| 2010 | 17 MPG | 14 | 22 | $4550 | 523 | 1 |
| 2009 | 17 MPG | 14 | 22 | $4550 | 523 | 1 |
| 2008 | 16 MPG | 14 | 20 | $4800 | 555 | 1 |
| 2007 | 16 MPG | 14 | 20 | $4800 | 555 | 1 |
| 2006 | 16 MPG | 14 | 20 | $4800 | 555 | 1 |
| 2005 | 16 MPG | 14 | 20 | $4800 | 555 | 1 |
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 105 two seaters models tracked here, the Mercedes-Benz SLK55 AMG ranks 28 on current figures, against a class average of 21.4 MPG.
Closest more-efficient alternatives in the same class: Lotus Elise/Exige (22.5), Porsche 718 Boxster (23), Porsche 718 Cayman (23), Porsche Boxster (23), Porsche Cayman (23).
Tailpipe CO₂ is rated at 401 grams per mile, which works out to roughly 6.0 tonnes a year at 15,000 miles.
Questions
What MPG does the Mercedes-Benz SLK55 AMG get?
The 2015 Mercedes-Benz SLK55 AMG is rated at 22 MPG combined by the EPA — 19 city and 28 highway. Across all 10 model years in the database it averages 18.6 MPG, ranging from 16 to 22 depending on year and trim.
How much does a Mercedes-Benz SLK55 AMG cost in fuel per year?
At 22 MPG and 15,000 miles a year, it burns about 682 gallons — roughly $2182 a year with fuel at $3.20 a gallon, or $0.145 per mile. The EPA's own published annual figure for the 2015 model is $3500.
Has the Mercedes-Benz SLK55 AMG become more efficient over time?
Yes. It has gone from 16 MPG in 2005 to 22 in 2015 — an improvement of 6 MPG, or 38% across 10 model years.
Is the Mercedes-Benz SLK55 AMG efficient for its class?
It ranks 28 of 105 in the Two Seaters class on current figures, against a class average of 21.4 MPG. That is 0.6 better 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.