Mercedes-Benz CLK-Class MPG by Year & Engine (EPA)

EPA fuel-economy ratings for every rated Mercedes-Benz CLK-Class model year from 1998 to 2009 — each engine and transmission with its official city, highway and combined figures. Over these years the CLK-Class has been offered with 3.5L 6-cyl, 5.5L 8-cyl, 6.2L 8-cyl, 5.0L 8-cyl, 5.4L 8-cyl, 3.2L 6-cyl engines; the most efficient version is the 1998 (up to 22 MPG combined). Every rated gas version calls for premium gasoline. Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.

Mercedes-Benz CLK-Class fuel economy by year

YearCombinedEnginesMedian used priceFor sale
2009 17–20 MPG 3.5L 6-cyl, 5.5L 8-cyl
2008 14–20 MPG 3.5L 6-cyl, 5.5L 8-cyl, 6.2L 8-cyl
2007 14–20 MPG 3.5L 6-cyl, 5.5L 8-cyl, 6.2L 8-cyl
2006 17–20 MPG 3.5L 6-cyl, 5.0L 8-cyl, 5.4L 8-cyl
2005 16–21 MPG 3.2L 6-cyl, 5.0L 8-cyl, 5.4L 8-cyl
2004 16–20 MPG 3.2L 6-cyl, 5.0L 8-cyl, 5.4L 8-cyl
2003 16–20 MPG 3.2L 6-cyl, 4.3L 8-cyl, 5.0L 8-cyl, 5.4L 8-cyl
2002 17–20 MPG 3.2L 6-cyl, 5.4L 8-cyl, 4.3L 8-cyl
2001 18–21 MPG 3.2L 6-cyl, 4.3L 8-cyl, 5.4L 8-cyl
2000 18–21 MPG 3.2L 6-cyl, 4.3L 8-cyl
1999 19–21 MPG 3.2L 6-cyl, 4.3L 8-cyl
1998 22 MPG 3.2L 6-cyl

2009 Mercedes-Benz CLK-Class: engines & MPG

The 2009 CLK-Class was EPA-rated in 4 versions (3.5L 6-cyl, 5.5L 8-cyl), with combined economy from 17 to 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK350 (Cabriolet) 3.5L 6-cyl Automatic 7-spd Premium 17 25 20 MPG
CLK350 3.5L 6-cyl Automatic 7-spd Premium 17 25 20 MPG
CLK550 5.5L 8-cyl Automatic 7-spd Premium 15 22 17 MPG
CLK550 (Cabriolet) 5.5L 8-cyl Automatic 7-spd Premium 15 21 17 MPG

2008 Mercedes-Benz CLK-Class: engines & MPG

The 2008 CLK-Class was EPA-rated in 6 versions (3.5L 6-cyl, 5.5L 8-cyl, 6.2L 8-cyl), with combined economy from 14 to 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK350 (Cabriolet) 3.5L 6-cyl Automatic 7-spd Premium 17 25 20 MPG
CLK350 3.5L 6-cyl Automatic 7-spd Premium 17 25 20 MPG
CLK550 (Cabriolet) 5.5L 8-cyl Automatic 7-spd Premium 15 21 17 MPG
CLK550 5.5L 8-cyl Automatic 7-spd Premium 15 22 17 MPG
CLK63 AMG (Cabriolet) 6.2L 8-cyl Automatic (S7) Premium 12 18 14 MPG
CLK63 AMG 6.2L 8-cyl Automatic (S7) Premium 12 19 14 MPG

2007 Mercedes-Benz CLK-Class: engines & MPG

The 2007 CLK-Class was EPA-rated in 5 versions (3.5L 6-cyl, 5.5L 8-cyl, 6.2L 8-cyl), with combined economy from 14 to 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK350 (Cabriolet) 3.5L 6-cyl Automatic 7-spd Premium 17 25 20 MPG
CLK350 3.5L 6-cyl Automatic 7-spd Premium 17 25 20 MPG
CLK550 5.5L 8-cyl Automatic 7-spd Premium 15 22 17 MPG
CLK550 (Cabriolet) 5.5L 8-cyl Automatic 7-spd Premium 15 22 17 MPG
CLK63 AMG (Cabriolet) 6.2L 8-cyl Automatic (S7) Premium 12 18 14 MPG

2006 Mercedes-Benz CLK-Class: engines & MPG

The 2006 CLK-Class was EPA-rated in 5 versions (3.5L 6-cyl, 5.0L 8-cyl, 5.4L 8-cyl), with combined economy from 17 to 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK350 3.5L 6-cyl Automatic 7-spd Premium 17 26 20 MPG
CLK350 (Cabriolet) 3.5L 6-cyl Automatic 7-spd Premium 16 24 19 MPG
CLK500 (Cabriolet) 5.0L 8-cyl Automatic 7-spd Premium 15 23 18 MPG
CLK500 5.0L 8-cyl Automatic 7-spd Premium 15 23 18 MPG
CLK55 AMG (Cabriolet) 5.4L 8-cyl Automatic (S5) Premium 15 21 17 MPG

2005 Mercedes-Benz CLK-Class: engines & MPG

The 2005 CLK-Class was EPA-rated in 6 versions (3.2L 6-cyl, 5.0L 8-cyl, 5.4L 8-cyl), with combined economy from 16 to 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 3.2L 6-cyl Automatic 5-spd Premium 18 26 21 MPG
CLK320 (Cabriolet) 3.2L 6-cyl Automatic 5-spd Premium 18 24 20 MPG
CLK500 (Cabriolet) 5.0L 8-cyl Automatic 7-spd Premium 15 23 18 MPG
CLK500 5.0L 8-cyl Automatic 7-spd Premium 15 23 18 MPG
CLK55 AMG 5.4L 8-cyl Automatic (S5) Premium 14 21 17 MPG
CLK55 AMG (Cabriolet) 5.4L 8-cyl Automatic (S5) Premium 14 21 16 MPG

2004 Mercedes-Benz CLK-Class: engines & MPG

The 2004 CLK-Class was EPA-rated in 6 versions (3.2L 6-cyl, 5.0L 8-cyl, 5.4L 8-cyl), with combined economy from 16 to 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 (Cabriolet) 3.2L 6-cyl Automatic 5-spd Premium 18 24 20 MPG
CLK320 3.2L 6-cyl Automatic 5-spd Premium 18 24 20 MPG
CLK500 (Cabriolet) 5.0L 8-cyl Automatic 5-spd Premium 15 21 17 MPG
CLK500 5.0L 8-cyl Automatic 5-spd Premium 15 21 17 MPG
CLK55 AMG (Cabriolet) 5.4L 8-cyl Automatic 5-spd Premium 14 20 16 MPG
CLK55 AMG 5.4L 8-cyl Automatic 5-spd Premium 14 20 16 MPG

2003 Mercedes-Benz CLK-Class: engines & MPG

The 2003 CLK-Class was EPA-rated in 5 versions (3.2L 6-cyl, 4.3L 8-cyl, 5.0L 8-cyl, 5.4L 8-cyl), with combined economy from 16 to 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 3.2L 6-cyl Automatic 5-spd Premium 17 24 20 MPG
CLK320 (Cabriolet) 3.2L 6-cyl Automatic 5-spd Premium 17 25 20 MPG
CLK430 (Cabriolet) 4.3L 8-cyl Automatic 5-spd Premium 16 22 18 MPG
CLK500 5.0L 8-cyl Automatic 5-spd Premium 15 21 17 MPG
CLK55 AMG 5.4L 8-cyl Automatic 5-spd Premium 14 20 16 MPG

2002 Mercedes-Benz CLK-Class: engines & MPG

The 2002 CLK-Class was EPA-rated in 6 versions (3.2L 6-cyl, 5.4L 8-cyl, 4.3L 8-cyl), with combined economy from 17 to 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 (Cabriolet) 3.2L 6-cyl Automatic 5-spd Premium 17 24 20 MPG
CLK320 3.2L 6-cyl Automatic 5-spd Premium 18 25 20 MPG
CLK55 AMG 5.4L 8-cyl Automatic 5-spd Premium 16 22 18 MPG
CLK430 4.3L 8-cyl Automatic 5-spd Premium 16 22 18 MPG
CLK430 (Cabriolet) 4.3L 8-cyl Automatic 5-spd Premium 16 22 18 MPG
CLK55 AMG (Cabriolet) 5.4L 8-cyl Automatic 5-spd Premium 14 21 17 MPG

2001 Mercedes-Benz CLK-Class: engines & MPG

The 2001 CLK-Class was EPA-rated in 5 versions (3.2L 6-cyl, 4.3L 8-cyl, 5.4L 8-cyl), with combined economy from 18 to 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 3.2L 6-cyl Automatic 5-spd Premium 18 26 21 MPG
CLK320 (Cabriolet) 3.2L 6-cyl Automatic 5-spd Premium 18 25 20 MPG
CLK430 4.3L 8-cyl Automatic 5-spd Premium 16 23 19 MPG
CLK430 (Cabriolet) 4.3L 8-cyl Automatic 5-spd Premium 16 22 18 MPG
CLK55 AMG 5.4L 8-cyl Automatic 5-spd Premium 16 22 18 MPG

2000 Mercedes-Benz CLK-Class: engines & MPG

The 2000 CLK-Class was EPA-rated in 4 versions (3.2L 6-cyl, 4.3L 8-cyl), with combined economy from 18 to 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 3.2L 6-cyl Automatic 5-spd Premium 18 26 21 MPG
CLK320 (Cabriolet) 3.2L 6-cyl Automatic 5-spd Premium 17 25 20 MPG
CLK430 4.3L 8-cyl Automatic 5-spd Premium 16 23 19 MPG
CLK430 (Cabriolet) 4.3L 8-cyl Automatic 5-spd Premium 15 22 18 MPG

1999 Mercedes-Benz CLK-Class: engines & MPG

The 1999 CLK-Class was EPA-rated in 3 versions (3.2L 6-cyl, 4.3L 8-cyl), with combined economy from 19 to 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 3.2L 6-cyl Automatic 5-spd Premium 18 26 21 MPG
CLK320 Cabriolet 3.2L 6-cyl Automatic 5-spd Premium 17 25 20 MPG
CLK430 4.3L 8-cyl Automatic 5-spd Premium 16 23 19 MPG

1998 Mercedes-Benz CLK-Class: engines & MPG

The 1998 CLK-Class was EPA-rated in 1 version (3.2L 6-cyl), with combined economy of 22 MPG.

VersionEngineTransmissionFuelCityHwyCombined
CLK320 3.2L 6-cyl Automatic 5-spd Premium 19 27 22 MPG

Frequently asked questions

What MPG does a Mercedes-Benz CLK-Class get?

Depending on year and engine, EPA combined ratings for the CLK-Class range from 20 to 22 MPG. The most efficient rated version is the 1998 model year.

What engines does the 2009 Mercedes-Benz CLK-Class have?

The 2009 CLK-Class was EPA-rated with 3.5L 6-cyl, 5.5L 8-cyl engines — see the 2009 table above for each version's exact city/highway figures.

Does the Mercedes-Benz CLK-Class require premium gas?

Yes — every EPA-rated gas CLK-Class version specifies premium gasoline.

About this data: EPA ratings from the official U.S. DOE/EPA dataset (fueleconomy.gov), as of July 2026; refreshed monthly. Market prices and listing counts are live medians from VehiSales inventory, updated daily. How to cite: “VehiSales Research, Mercedes-Benz CLK-Class EPA Fuel Economy by Model Year” with a link to https://vehisales.com/research/fuel-economy/mercedes-benz/clk-class.

See also: Mercedes-Benz CLK-Class hub — live listings, prices & reliability · Used Mercedes-Benz CLK-Class prices by year · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].

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