Rocker arm failure. Detroit released repair at no cost on the DD15 and up but not on the DD5 when they have the exact same problem and design and parts as the larger engines and they know that it is a problem.
Engine & cooling
2019 Freightliner M2 Engine problems
Owners have filed 1 complaint about the 2019 Freightliner M2's engine & cooling with NHTSA - 100% of all its complaints, most recently on November 1, 2025. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
- Complaints
- 1
- Recalls
- 0
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Engine complaints
Freightliner M2 engine complaints by year
M2 engine problems, every yearSource: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data