2007 Mercedes-Benz S550 power train problems

13 owner complaints filed with NHTSA name the power train on the 2007 Mercedes-Benz S550 — 24% of all complaints for this model year.

Power Train complaints

24%

share of all complaints

65,561 mi

median reported incident mileage

0 / 0

crash / fire reports

What owners report

“My 2007 mb s550 base model stalled as I was merging on to the expressway in heavy traffic. After sitting on side of the road for 20mins, I started the car and it was making a whining noise and when I accelerate the noise gets louder. I drove the car to the nearest mercedes-benz dealership. I was…”
filed Apr 27, 2019
“Tl* the contact owns a 2007 mercedes-benz s550. While driving approximately 1 to 6 mph, the transmission gears made a thumping sound without warning. The issue recurred numerous times. The dealer diagnosed that the transmission had to be replaced. The vehicle was taken to a transmission specialist…”
filed Sep 23, 2016

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause…
LI35.30-P-058566 · Service Bulletin/Repair Instructions · issued Jul 14, 2026
Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in…
LI33.30-P-056665 · Service Bulletin/Repair Instructions · issued Nov 15, 2025
Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in…
LI33.30-P-056665 · Service Bulletin/Repair Instructions · issued May 21, 2025