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Engine coolingPart report

1999 Mercedes-Benz C230 Engine cooling Problems

Complaints
2about this part
Share
7%of 29 total for the year
Median mileage
128,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine cooling of the 1999 Mercedes-Benz C230, 7% of the 29 complaints for this model year. Where a mileage was given, the median is 128,000 miles.

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.

“The contact stated while at an idle, there was vibration in the vehicle. Also, while applying the accelerator pedal, there was a hesitation. The dealership replaced the oxygen sensor, but the problem returned. The vehicle was taken back to the dealership, who determined the inner cooling system was leaking oil onto the mass air flow sensor. The inner cooler system, valve, mass air flow sensor, and oxygen sensor were replaced.”

NHTSA complaint #10172575, filed 2006-11, 128,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200773%
20062320%
2005911%
2004619%
20031937%
20021630%
200013%
199927%
199825%

Other parts of the 1999 Mercedes-Benz C230

Fuel system
6 complaintsAir bags
4 complaintsBrakes
4 complaintsElectrical system
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsSuspension
3 complaintsExterior lighting
2 complaintsVehicle speed control
2 complaintsEquipment
1 complaintsSeat belts
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaints

← All problems reported for the 1999 Mercedes-Benz C230

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