2025 Mack MD (gasoline): common problems
The maker issued 8 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 8
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 5 |
| Service brakes | 0 | 0 | 2 |
| Engine | 0 | 0 | 1 |
| Powertrain | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job…
CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a Critical failure, the vehicle will remain in Safe State.
- CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded
- CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office…
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data.
- Frame lean can be caused by several seemingly isolated possibilities
The two most common are suspension and frame assembly issues.
- Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned…
Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping. These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual…
- CBR
To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
- CBR
Diagnostic Trouble Code (DTC) U010187- Lost Communication With TECU
- CBR
Telematics Gateway (TGW) Connect Ability Issues
Other years of this model
Questions and answers
What are the most common problems with the 2025 Mack MD (gasoline)?
There are no owner complaints in the NHTSA data for this year; the data comes from 8 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2025 Mack MD (gasoline)?
NHTSA lists 8 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2025 Mack MD (gasoline) from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2025 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.