1994 Mercedes-Benz 420 Recalls
No NHTSA recalls on record for the 1994 Mercedes-Benz 420. That means NHTSA has no open safety campaign for this vehicle — it does not guarantee the absence of problems. Owners have filed 17 complaints with NHTSA, most often about the child seat. Last updated July 5, 2026.
Complaints by component
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“Car stopped shifting, check engine light and asr light appeared while driving. Took car into auto mechanic and was told wiring harness would need to be totally replaced and would cost more than auto's worth. Said these cars were notorious for having wiring harness problems and can not believe it…”
“Vehicle is running erratically. Upon investigation, I found that the engine wiring harness in model years including my 1994 mercedes benz e420 have a chronic problem with deteriorating insulation. As some fires and crashes have been reported, I am paying to have this part replaced. *tr”
“Vehicle checked and found that insulation on all of the fuel injection wiring, temperature sensor and fan thermal switch harness deteriorated causing wires to rub together. Consumer discovered that harness insulation is made of very poor material. The insulation breaks very easy at the touch and…”
“5/18/2006. Check engine light appeared. Took vehicle to mbz repair shop and found the engine wiring harness's wire insulation breaking apart and exposing the bare wiring. Cost of repair +$900.00. *jb”
“I got 94 e420 benz with defect engine wiring harness. They are cracking. The idle is rough and I got engine code errors. One time the engine failed on the surface street. It was lucky there was no car behind me at that time. My mechanic told me that all mercedes models from 91-96 have this…”
“The vehicles asr light illuminated then the power drive would shut off. *nlm *ts”
“The problem started last august. It occurrs only occasionally and has never been duplicated when at a dealership or repair shop. After applying the brakes and coming to a stop, the car starts to roll forward. When I take my foot of the brake pedal and reapply it, the car then stops. However, on…”
“After coming to a complete stop vehicle will try to surge forward while consumer applies brakes. This has been an intermittent problem. Contacted dealer, and dealer cannot find cause. Has replaced several brake parts but found nothing.*ak. Consumer stated incident happens when the vehicle has been…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1994 Mercedes-Benz 420 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.