1999 Mercedes-Benz CLK320 Engine cooling Problems
- Complaints
- 5about this part
- Share
- 28%of 18 total for the year
- Median mileage
- 75,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine cooling of the 1999 Mercedes-Benz CLK320, 28% of the 18 complaints for this model year. Where a mileage was given, the median is 75,000 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Dt: vehicle is burning oil. Dealer said they can't find the cause of the problem. Manufacturer has not been contacted yet. Independent mechanic stated that the vehicle was burning excessive oil, and recommended that the dealer or manufacturer look into it.”
NHTSA complaint #10126667, filed 2005-06, 76,000 miles“(1) vibrations of engine at idle was felt 1 day prior to the failure. (2) heard loud/knocking noise the next day while driving home. (3) home inspections revealed disengagement of the outer belt pulley from the harmonic balancer. (4) called the san diego dealer for a repair/replacement. (5) the model is clk 320, 1999, approximately 64,000 miles when this happened. (6) directed to this site from an internet forum, whose hundred of members had stated the same problems. (7) surprised to see that odi did not find the defect serious enough to force the manufacturer recall.”
NHTSA complaint #10093459, filed 2004-10, 63,989 miles“The vehicle started back firing and stalling, it suddently lost all power, traction lights illuminated on the dash, while the consumer pulled to the side the engine caught on fire.”
NHTSA complaint #784130, filed 2000-06Related service bulletins
- 10033070Dec 16, 2009Xentry (mercedes): engine warning lamp is currently on or was on and a delay fault of the camshaft adjust to current or stored in the engine control unit. Models 171, 203, 209…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2002 | 2 | 13% |
| 1999 | 5 | 28% |
Other parts of the 1999 Mercedes-Benz CLK320
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsFuel system
2 complaintsBody and structure
2 complaintsSuspension
2 complaintsTransmission and drivetrain
2 complaintsBrakes
1 complaintsElectrical system
1 complaintsEquipment
1 complaintsExterior lighting
1 complaintsSeats
1 complaintsSteering
1 complaints
← All problems reported for the 1999 Mercedes-Benz CLK320
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology