- Newest year: 2009
- Gas
- Small cars
2007-2009 Mercedes-Benz CLK-Class MPG & Fuel Cost
3 model years · 14–20 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 2 of 10 small car configurations, MY2009. Ranked against all rated configurations, not sales-weighted.
2007-2009 Mercedes-Benz CLK-Class at a glance
The 2007-2009 Mercedes-Benz CLK-Class covers 3 model years in the EPA database (15 configurations in all), rated 14–20 MPG combined. The newest model year, 2009, costs about $4,020 a year to fuel for its most efficient version, the CLK350 3.5L 6-cyl RWD (20 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2008 and 2009.
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
2007-2009 Mercedes-Benz CLK-Class by model year
What the 2009 CLK350 3.5L 6-cyl RWD costs to drive
Per month
$335
$4,020 a year ÷ 12
Per 25 miles
$6.70
Per 100 miles
$26.80
Five years
$20,100
5 × the yearly cost, prices held at today's level
vs the small car median
$530more a year
Class median $3,490 a year, MY2009
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2009 Mercedes-Benz CLK-Class MPG
Versus 2008: The most efficient configuration stays at 20 MPG. Its annual cost stays at $4,020.
Gas configurations (4)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CLK350 (Most efficient) | 3.5L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| CLK350 (Cabriolet) | 3.5L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| CLK550 | 5.5L 8-cyl | RWD | 15 | 22 | 17 | $4,730 |
| CLK550 (Cabriolet) | 5.5L 8-cyl | RWD | 15 | 21 | 17 | $4,730 |
4 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2008 Mercedes-Benz CLK-Class MPG
14–20 MPG · $4,020–$5,740/yr
Versus 2007: The most efficient configuration stays at 20 MPG. Its annual cost stays at $4,020.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CLK350 (Cabriolet) (Most efficient) | 3.5L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| CLK350 | 3.5L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| CLK550 | 5.5L 8-cyl | RWD | 15 | 22 | 17 | $4,730 |
| CLK550 (Cabriolet) | 5.5L 8-cyl | RWD | 15 | 21 | 17 | $4,730 |
| CLK63 AMG | 6.2L 8-cyl | RWD | 12 | 19 | 14 | $5,740 |
| CLK63 AMG (Cabriolet) | 6.2L 8-cyl | RWD | 12 | 18 | 14 | $5,740 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2007 Mercedes-Benz CLK-Class MPG
14–20 MPG · $4,020–$5,740/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Gas configurations (5)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CLK350 (Most efficient) | 3.5L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| CLK350 (Cabriolet) | 3.5L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
| CLK550 | 5.5L 8-cyl | RWD | 15 | 22 | 17 | $4,730 |
| CLK550 (Cabriolet) | 5.5L 8-cyl | RWD | 15 | 22 | 17 | $4,730 |
| CLK63 AMG (Cabriolet) | 6.2L 8-cyl | RWD | 12 | 18 | 14 | $5,740 |
5 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the CLK350 3.5L 6-cyl RWD: $4,790 in California and $3,480 in Texas, a $1,310 difference.
- California $4,790
- Washington $4,510
- New York $3,970
- Florida $3,670
- Texas $3,480
Similar cars
Closest combined MPG among MY2009 small car models.
Generations
Frequently asked questions
What gas mileage does the 2007-2009 Mercedes-Benz CLK-Class get?
EPA rates the 2007-2009 Mercedes-Benz CLK-Class at 14–20 MPG combined across 15 configurations and 3 model years. The most efficient version, the 2009 CLK350 3.5L 6-cyl RWD, is rated 20 MPG (17 city, 25 highway).
Which years had the best MPG in the 2007-2009 Mercedes-Benz CLK-Class?
Every model year of the 2007-2009 Mercedes-Benz CLK-Class tops out at 20 MPG combined, so no year is better than another.
Did EPA ratings change during the 2007-2009 Mercedes-Benz CLK-Class?
Yes. Ratings changed in 2008 and 2009.
How does the 2007-2009 Mercedes-Benz CLK-Class compare with the previous generation?
The previous generation (2005-2006 Mercedes-Benz CLK-Class) is rated 16–21 MPG combined and costs $3,830–$5,020 a year to fuel; the 2007-2009 model is rated 14–20 MPG and costs $4,020–$5,740 a year.
How much does it cost to fuel a 2009 Mercedes-Benz CLK-Class per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the CLK350 3.5L 6-cyl RWD costs about $4,020 a year. Across all 4 configurations the cost runs $4,020–$4,730 a year. That is a $710 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2009 Mercedes-Benz CLK-Class 100 miles?
About $26.80 per 100 miles for the CLK350 3.5L 6-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $26.80 and $31.53 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2009 Mercedes-Benz CLK-Class more efficient in the city or on the highway?
The CLK350 3.5L 6-cyl RWD is rated 17 city and 25 highway MPG, so it is more efficient on the highway, by 8 MPG.
How does the 2009 Mercedes-Benz CLK-Class compare with other small car configurations?
The CLK350 3.5L 6-cyl RWD costs about $4,020 a year to fuel, $530 more than the class median of $3,490, and less than 2 of 10 small car configurations. The comparison covers all 336 rated small car configurations for MY2009, not weighted by sales.
Is the 2009 Mercedes-Benz CLK-Class different from the 2008 model?
The most efficient configuration stays at 20 MPG. Its annual cost stays at $4,020. EPA lists 4 configurations for 2009 against 6 configurations for 2008. See the 2008 Mercedes-Benz CLK-Class for that year.