1999 Mercedes-Benz 420 Other or unknown 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 other or unknown 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.
“Continuing idling and acceleration problems. On january 21, 2000, one month after second repair attempt, while driving vehicle it suddenly lost power then violently jolted forward causing temporary loss of control. (note: driver's foot did not touch accelerator). Driver then noticed engine check light suddenly come on (subsequently learned this indicates a fuel injection problem). Immediately notified dealer but problem persists. On april 26, check engine light again came on and car began to drive terribly, e.g., poor and inconsistent acceleration.”
NHTSA complaint #722039, filed 2000-04Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 1999 | 1 | 20% |
| 1994 | 4 | 25% |
Other parts of the 1999 Mercedes-Benz 420
1 complaintsElectrical system
1 complaintsFuel system
1 complaintsSteering
1 complaintsBody and structure
1 complaintsTransmission and drivetrain
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 Nov 1, 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