2007 Mercedes-Benz CLS550 fuel/propulsion system problems
17 owner complaints filed with NHTSA name the fuel/propulsion system on the 2007 Mercedes-Benz CLS550 — 49% of all complaints for this model year.
What owners report
“The fuel tank has a leak from a defect in the plastic, and my local Mercedes dealership is unwilling to honor the Warranty Coverage Extension that covered fuel tank components to replace the fuel tank.”
filed Oct 15, 2025
“I am referencing action # pe12001. After each of my last two fuel filllings, the car is emitting a very strong smell of gasoline from the back seat & trunk compartment. I park my car in my garage and the smell is strong enough that I can smell it in my home. I am extremely fearful that there will…”
filed Sep 19, 2017
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other CLS550 years
| Year | Reports | Share |
|---|---|---|
| 2012 CLS550 | 8 | 35% |
Other reported problem areas on the 2007 Mercedes-Benz CLS550
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.