1993 Mercedes-Benz 400E problems & reliability
19 owner complaints filed with NHTSA for the 1993 Mercedes-Benz 400E. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Electrical System → | 14 | 74% |
| Engine | 2 | 11% |
| Engine and Engine Cooling | 2 | 11% |
| Vehicle Speed Control | 2 | 11% |
| Electronic Stability Control (esc) | 1 | 5% |
| Fuel/propulsion System | 1 | 5% |
| Unknown OR Other | 1 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Complaints by incident year
What owners report
“Parked the vehicle and placed it in park then turned ignition off. Burning smell coming from vehicle then smoke started going in through vents and seemed liked it was coming from under the car. The electrical wiring harness is creating mass and the car nearly went up in flames. The fire department arrived and werent…”
Unknown OR Other · filed Mar 24, 2016
“The fuel injection engine harness wiring has completely deteriorated due to the use of a bio degradable material by mercedes benz. Has resulted in a lot of shorting issues, which resulted in air conditioning turning off, fan control off, engine heating up, blue and black smoke, and now smog failure. This is a known…”
Engine · filed Mar 4, 2015
“Wiring caught fire due to faulty wiring harness insulation, which is well documented. Yet, mercedes refuses to resolve/recall this issue. Wiring harness needs to be replaced. *tr”
Electrical System · filed Aug 4, 2014
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
3 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1993 Mercedes-Benz 400E.
Mercedes my-all models 164.195 212.095, 221-195 222-163, 245.286 . Vehicles must be examined immediately after an accident to avoid damage to hv battery. *lj
S-B-54.10/262 · Service Bulletin/Repair Instructions · issued Nov 17, 2014
Parktronic system triggers without obvious cause. *lj
LI54.65-P-059115 · Service Bulletin/Repair Instructions · issued May 27, 2014
Integrated transmission control must be replaced if fault codes are replaced. *lj
LI27.00-P-057408 · Service Bulletin/Repair Instructions · issued Apr 25, 2014
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 1993 Mercedes-Benz 400E in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1993 Mercedes-Benz 400E?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.