2006 Mercedes-Benz R350 engine problems
17 owner complaints filed with NHTSA name the engine on the 2006 Mercedes-Benz R350 — 17% of all complaints for this model year.
What owners report
“My car has stalled several times, either when I am driving, or when I stop at a traffic light. Rough idling and/or running when stopped at a red light or driving at speeds that wouldn’t normally be an issue. Engine stalling or misfiring, and car sometimes have trouble starting up. Loud rattling or…”
filed Jun 20, 2022
“As I was driving down the highway I pressed on gas pedal and vehicle made a very loud chain whine noise and it cut off in the middle of highway and never started back up.”
filed Jul 16, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Complaint Vehicle with atypical reduced heat output. Cause Silicate granulate may have escaped from a damaged bag in the expansion reservoir (not visible), reducing the coolant flow in the heater heat exchanger (see…
LI83.20-P-051802 · Service Bulletin/Repair Instructions · issued Apr 1, 2025
Engine problems in other R350 years
| Year | Reports | Share |
|---|---|---|
| 2008 R350 | 5 | 14% |
| 2007 R350 | 6 | 13% |
Other reported problem areas on the 2006 Mercedes-Benz R350
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.