- Newest year: 2009
- Gas
- Small cars
- Same as 2008
2007-2009 Mercedes-Benz CLS-Class MPG & Fuel Cost
3 model years · 14–16 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 1 of 10 small car configurations, MY2009. Ranked against all rated configurations, not sales-weighted.
2007-2009 Mercedes-Benz CLS-Class at a glance
The 2007-2009 Mercedes-Benz CLS-Class covers 3 model years in the EPA database (6 configurations in all), rated 14–16 MPG combined. The newest model year, 2009, costs about $5,020 a year to fuel for its most efficient version, the CLS550 5.5L 8-cyl RWD (16 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2008; 2009 repeat the values of the year before.
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
2007-2009 Mercedes-Benz CLS-Class by model year
What the 2009 CLS550 5.5L 8-cyl RWD costs to drive
Per month
$418
$5,020 a year ÷ 12
Per 25 miles
$8.37
Per 100 miles
$33.47
Five years
$25,100
5 × the yearly cost, prices held at today's level
vs the small car median
$1,530more 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 CLS-Class MPG
EPA lists the same ratings for the 2009 Mercedes-Benz CLS-Class as for the 2008 model, so the configurations and costs are the ones in the 2008 section above.See 2008
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CLS550 (Most efficient) | 5.5L 8-cyl | RWD | 14 | 21 | 16 | $5,020 |
| CLS63 AMG | 6.2L 8-cyl | RWD | 12 | 18 | 14 | $5,740 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2008 Mercedes-Benz CLS-Class MPG
14–16 MPG · $5,020–$5,740/yr
Versus 2007: The most efficient configuration stays at 16 MPG. Its annual cost stays at $5,020.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CLS550 (Most efficient) | 5.5L 8-cyl | RWD | 14 | 21 | 16 | $5,020 |
| CLS63 AMG | 6.2L 8-cyl | RWD | 12 | 18 | 14 | $5,740 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2007 Mercedes-Benz CLS-Class MPG
14–16 MPG · $5,020–$5,740/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| CLS550 (Most efficient) | 5.5L 8-cyl | RWD | 14 | 20 | 16 | $5,020 |
| CLS63 AMG | 6.2L 8-cyl | RWD | 12 | 18 | 14 | $5,740 |
2 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 CLS550 5.5L 8-cyl RWD: $5,990 in California and $4,350 in Texas, a $1,640 difference.
- California $5,990
- Washington $5,630
- New York $4,960
- Florida $4,590
- Texas $4,350
Similar cars
Closest combined MPG among MY2009 small car models.
Generations
Frequently asked questions
What gas mileage does the 2007-2009 Mercedes-Benz CLS-Class get?
EPA rates the 2007-2009 Mercedes-Benz CLS-Class at 14–16 MPG combined across 6 configurations and 3 model years. The most efficient version, the 2009 CLS550 5.5L 8-cyl RWD, is rated 16 MPG (14 city, 21 highway).
Which years had the best MPG in the 2007-2009 Mercedes-Benz CLS-Class?
Every model year of the 2007-2009 Mercedes-Benz CLS-Class tops out at 16 MPG combined, so no year is better than another.
Did EPA ratings change during the 2007-2009 Mercedes-Benz CLS-Class?
Yes. Ratings changed in 2008. In 2009 the values repeat the year before.
How does the 2007-2009 Mercedes-Benz CLS-Class compare with the previous generation?
The previous generation (2006 Mercedes-Benz CLS-Class) is rated 15–16 MPG combined and costs $5,020–$5,360 a year to fuel; the 2007-2009 model is rated 14–16 MPG and costs $5,020–$5,740 a year.
How much does it cost to fuel a 2009 Mercedes-Benz CLS-Class per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the CLS550 5.5L 8-cyl RWD costs about $5,020 a year. Across all 2 configurations the cost runs $5,020–$5,740 a year. That is a $720 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2009 Mercedes-Benz CLS-Class 100 miles?
About $33.47 per 100 miles for the CLS550 5.5L 8-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $33.47 and $38.27 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2009 Mercedes-Benz CLS-Class more efficient in the city or on the highway?
The CLS550 5.5L 8-cyl RWD is rated 14 city and 21 highway MPG, so it is more efficient on the highway, by 7 MPG.
How does the 2009 Mercedes-Benz CLS-Class compare with other small car configurations?
The CLS550 5.5L 8-cyl RWD costs about $5,020 a year to fuel, $1,530 more than the class median of $3,490, and less than 1 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 CLS-Class different from the 2008 model?
No. EPA lists the same ratings for 2008 and 2009: 2 configurations rated 14–16 MPG combined. See the 2008 Mercedes-Benz CLS-Class for that year.