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2014 Mercedes Benz SLK 350
Photo shows the 2014 model (previous generation): 2014 Mercedes Benz SLK 350. Photo: Greg Gjerdingen, CC BY 2.0, via Wikimedia Commons
  • Gas
  • Two-seaters
  • MY2000–2016

Mercedes-Benz SLK-Class MPG & Fuel Cost by Year

17 model years · 2000–2016

27 MPG
Combined
24 MPG
City
32 MPG
Highway
Annual cost · MY2016 SLK300 2.0L 4-cyl turbo RWD
$2,950

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

All Mercedes-Benz models

Mercedes-Benz SLK-Class fuel economy at a glance

EPA has rated the Mercedes-Benz SLK-Class for 17 model years, 2000 to 2016. Across those years its combined rating runs 16–27 MPG. The latest model year, 2016, has 3 configurations rated 22–27 MPG combined and costing $2,950–$3,630 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2000 is the 2016 SLK300 2.0L 4-cyl turbo RWD, at 27 MPG. EPA ratings go back to 1984: the earliest rating on this page is 22 MPG in 1999.

Mercedes-Benz SLK-Class MPG by year

16182022242628 20002003200520122016 Gas 16182022242628 2000200320122016 Gas
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Mercedes-Benz SLK-Class: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2016 Generation page
2016 22–27 $2,950–$3,630
2012-2015 Generation page
2015 22–26 $3,090–$3,630
2014 22–26 $3,090–$3,630
2013 22–26 $3,080–$3,630
2012 22–26 $3,080–$3,620
2005-2011 Generation page
2011 20–21 $3,790–$3,940
2010 17–21 $3,830–$4,730
2009 17–21 $3,830–$4,730
2008 16–20 $4,020–$5,020
2007 16–20 $4,020–$5,020
2006 16–21 $3,830–$5,020
2005 16–19 $4,230–$5,020
2004 Generation page
2004 17–22 $3,650–$4,730
2003 Generation page
2003 17–22 $3,650–$4,730
2001-2002 Generation page
2002 18–23 $3,490–$4,460
2001 19–23 $3,490–$4,230
2000 Generation page
2000 22 $3,650

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Mercedes-Benz SLK-Class generations

7 generations between 2000 and 2016. Open one for the table of every model year and configuration.

2016 powertrain options

Gas · 2.0L, 3.5L, 5.5L
Combined
22–27 MPG
Per year
$2,950–$3,630
See gas configurations

Mercedes-Benz SLK-Class MPG history, 1999–1999

Mercedes-Benz SLK-Class: combined MPG range by model year, 1999–1999
YearGas (MPG)
1999 22

EPA re-estimated the ratings of pre-2008 vehicles under its 2008 method; these are the re-estimated values.

EPA ratings: fueleconomy.gov file of Sep 29, 2026 · premium gasoline $5.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Mercedes-Benz SLK-Class's gas mileage by year?

EPA combined ratings for the Mercedes-Benz SLK-Class run 16–27 MPG across model years 2000 to 2016. The latest year, 2016, is rated 22–27 MPG.

Which Mercedes-Benz SLK-Class model year has the best gas mileage?

The 2016 Mercedes-Benz SLK-Class SLK300 2.0L 4-cyl turbo RWD has the highest combined rating since 2000, at 27 MPG.

How much does a Mercedes-Benz SLK-Class cost to fuel per year?

For MY2016, EPA-rated configurations cost $2,950–$3,630 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $2,950.

Has the Mercedes-Benz SLK-Class's fuel economy improved over time?

Yes. The most efficient configuration moved from 22 MPG in 2000 to 27 MPG in 2016, 5 MPG more. Going back further, the best rating in 1984 was 22 MPG.

Which Mercedes-Benz SLK-Class model years have the same ratings?

EPA lists identical ratings as the previous year for 2008. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.

How many generations of the Mercedes-Benz SLK-Class are there?

EPA data covers 7 generations of the Mercedes-Benz SLK-Class: 2016, 2012-2015, 2005-2011, 2004, 2003, 2001-2002, 2000. Each has its own page with a table for every model year.