AI DamageTriumph Bonneville T120: problems, complaints, bulletins
Summary for the Triumph Bonneville T120 across 10 model years: 0 owner complaints and 101 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 544 |
| Equipment | 0 | 0 | 64 |
| Backover prevention | 0 | 0 | 14 |
| Engine and cooling | 0 | 0 | 13 |
| Engine | 0 | 0 | 10 |
| Powertrain | 0 | 0 | 10 |
| Wheels | 0 | 0 | 7 |
| Steering | 0 | 0 | 5 |
| Fuel system | 0 | 0 | 3 |
| Other | 0 | 0 | 75 |
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Backover prevention. Rear camera and parking sensors after a rear impact.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Dealer notice announcing the availability of Daignostic software and dealers should begin using it immediately
- Dealer notice announcing the availability of Triumph Diagnostic Tool 2026-07 and dealers should begin…
- Dealer notice announcing the availability of Triumph Diagnostic Tool 2026-06.1 and dealers should begin…
- Technical Bulletin 264 provides instructions that relates to
- Dealer notice announcing the availability of Triumph Diagnostic Tool version 2026-06 and dealers should…
- Dealer notice announcing the availability of Technical Bulletin 264
- Dealer notice advising the availalbility of TDT version 2026-05.2 which resolves the ABS as Not Connected…
- Dealer notice announcing the availability of Diagnostic software 2026-05.1 and dealers should begin using…
- Dealer notice reminding of Motorcycle Cleaning, prohibited use of High-Pressure & Steam Cleaning equipment
- Dealer notice announcing the availability of Diagnostic software 2026-04 and dealers should begin using it…
- Dealer notice announcing the availability of Diagnostic software 2026-03 and dealers should begin using it…
- Dealer notice announcing the availability of Diagnostic software 2026-02 and dealers should begin using it…
Other models of this make
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.