AI Damage1994 Mercedes-Benz 320: common problems
Owners of the 1994 Mercedes-Benz 320 filed 49 complaints with NHTSA, most often about electrical system and air bags. Details by component below, with sources.
Key figures
- Owner complaints
- 49
- involving a crash
- 2
What fails most often
- 1 Electrical system 86% of all complaints
- 2 Air bags 8% of all complaints
- 3 Engine and cooling 8% of all complaints
- 4 Equipment 4% of all complaints
- 5 Engine 2% of all complaints
- 6 Powertrain 2% of all complaints
- 7 Seats 2% of all complaints
- 8 Suspension 2% of all complaints
- Electrical system: 42 complaints (86% of all), 2 of them with a crash reported by the owner.
- Air bags: 4 complaints (8% of all).
- Engine and cooling: 4 complaints (8% of all).
- Equipment: 2 complaints (4% of all).
- Engine: 1 complaints (2% of all).
Symptoms owners describe
How many of the 49 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 | 42 | 2 | 0 |
| Air bags | 4 | 0 | 0 |
| Engine and cooling | 4 | 0 | 0 |
| Equipment | 2 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Powertrain | 1 | 0 | 0 |
| Seats | 1 | 0 | 0 |
| Suspension | 1 | 0 | 0 |
| Tires | 1 | 0 | 0 |
| Other | 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.
My 1994 mercedes-benz e320 cabriolet has a check engine light on. An investigation leads to disintegrated engine wire harness, that is shorting. The vehicle is running rough and stalling. There is a potential for a fire hazard.
I was inspecting my car to prepare for a smog check.the check engine lite was on. I noticed that the wires going to the air pump had no insulation on them. I cut into the harness to find all of the wires were disintegrating. I ran the code check and got 3 codes. 4,5,and 18. One was egr failure which is common.
The contact stated that the wiring harness rusted, causing the vehicle to stall. The dealer and manufacturer were notified of the failure, but denied any assistance with repairing the vehicle. The vehicle was not repaired. The failure and current mileage was 55,000. Updated evoq 03/28/12
While driving approximately 65 mph, the contact engaged the air conditioner and smoke began emitting from the vents. The vehicle was towed to an independent mechanic where the contact was told that the air conditioning wires had melted. The vehicle was repaired.
I was changing spark plugs and saw the bad wires in the harness. I taped up where I could but when I touched the wire the insulation just fell off the wires. I was able to get car running for awhile but now it runs bad. I am in the process of trying to replace harness at this time. This is clearly a mfg.
The contact stated that the vehicle shakes and makes a loud noise while idling. The dealer diagnosed the vehicle as needing an engine wiring harness. The purchase date and powertrain were unknown. The current and failure mileages were 80,000.
Air bags deployed without warning while driving about 45-50 mph.
While driving the seat began to move and suddenly flew all the way to the steering wheel, crushing the driver.
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 5,395 of 36,656 model years in the NHTSA data (top 15% most complained about).
On average one model year of the 320 has 23 complaints (10 years in the data). This year has 49, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Other years of this model
Questions and answers
What are the most common problems with the 1994 Mercedes-Benz 320?
Owner complaints to NHTSA most often mention: electrical system, air bags, engine and cooling. Total complaints: 49. The most frequent symptoms in complaint texts: smoke, burning smell, fire (16%), stalls while driving (10%), warning lights, check engine (8%).
How many service bulletins (TSB) were issued for the 1994 Mercedes-Benz 320?
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 320 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 2026-11-05.