AI Damage1994 Mercedes-Benz 600: common problems
Owners of the 1994 Mercedes-Benz 600 filed 8 complaints with NHTSA, most often about electrical system and engine and cooling. Details by component below, with sources.
Key figures
- Owner complaints
- 8
What fails most often
- 1 Electrical system 75% of all complaints
- 2 Engine and cooling 38% of all complaints
- 3 Fuel system 25% of all complaints
- 4 Powertrain 13% of all complaints
- 5 Vehicle speed control 13% of all complaints
- Electrical system: 6 complaints (75% of all).
- Engine and cooling: 3 complaints (38% of all).
- Fuel system: 2 complaints (25% of all).
- Powertrain: 1 complaints (13% of all).
- Vehicle speed control: 1 complaints (13% of all).
Symptoms owners describe
How many of the 8 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 6 | 0 | 0 |
| Engine and cooling | 3 | 0 | 0 |
| Fuel system | 2 | 0 | 0 |
| Powertrain | 1 | 0 | 0 |
| Vehicle speed control | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The asr, & srs systems were disabled intermittently, the car stalled on the highway and the engine would surge occasionally. I bought this car used, but it was in very good condition and this major manufacturing problem should not have happened.
The vehicle unexpectedly developed sudden acceleration when switching from park to reverse or any other gear. The first time it occurred, it almost ran over my child who was playing nearby and I was trying to back up the car out of the garage for a wash.
To pick the car up and the gentleman said the check engine light came on as soon as he started it that morning. We then went to a repair shop and they said it was a o2 sensor, and quoted me $200,00 installed. I declined and brought the car home to have my own people work on the car.
Cooling system link, diagnosed to be a 4 way heater hose connector which mounts on the firewall of my 1994 s600. Intake manifold must be taken off which had a wiring harness leading threw it which in turn crumbled and fused together which lead to multiple issues and damage to many different components and parts.
The disintegrating wiring harness has caused me enormous problems with this car,not to mention the likelihood of being a fire hazard. I understand this is a well known problem with mercedes 91-96 models and I want to add my name to the lists of complaints.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 11,899 of 36,659 model years in the NHTSA data (top 32% most complained about).
On average one model year of the 600 has 7 complaints (6 years in the data). This year has 8, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Other years of this model
Questions and answers
What are the most common problems with the 1994 Mercedes-Benz 600?
Owner complaints to NHTSA most often mention: electrical system, engine and cooling, fuel system. Total complaints: 8. The most frequent symptoms in complaint texts: stalls while driving (38%), warning lights, check engine (38%), smoke, burning smell, fire (25%).
How many service bulletins (TSB) were issued for the 1994 Mercedes-Benz 600?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 1994 Mercedes-Benz 600 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 1994 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.