1999 Mercedes-Benz 420 Transmission and drivetrain Problems
- Complaints
- 1about this part
- Share
- 20%of 5 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the transmission and drivetrain of the 1999 Mercedes-Benz 420, 20% of the 5 complaints for this model year.
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.
“Transmission slips into neutral while driving. This has occurred 5 times in two weeks. It is currently at the dealer for repair of this defect, again.”
NHTSA complaint #705376, filed 1999-04Transmission and drivetrain: other model years
Other parts of the 1999 Mercedes-Benz 420
1 complaintsElectrical system
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSteering
1 complaintsBody and structure
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaintsWheels
1 complaints
← All problems reported for the 1999 Mercedes-Benz 420
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