Triumph Thunderbird A1: problems, complaints, bulletins
Summary for the Triumph Thunderbird A1 across 1 model years: 2 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 2010 | 2 | 0 | 0 | 0 |
What fails most often
- 1 Electrical system 50% of all complaints
- 2 Engine and cooling 50% of all complaints
- Electrical system: 1 complaints (50% of all).
- Engine and cooling: 1 complaints (50% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 1 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Tl* the contact owns a 2010 triumph thunderbird. The contact stated that the drive belt wore prematurely. The vehicle was taken to an authorized dealer where the belt and pulley were replaced yet the failure persisted. The contact was concerned that the belt would fracture, causing the wheels to lock.
Triumph 2010 thunderbird models have defective speedometers that stick often and at times are very erratic. In either case the vehicle's speed cannot be monitored by the driver.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
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 2026-11-05.