AI DamageTriumph Sprint ST: problems, complaints, bulletins
Summary for the Triumph Sprint ST across 8 model years: 22 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Fuel system 45% of all complaints
- 2 Fuel/propulsion system 27% of all complaints
- 3 Service brakes 14% of all complaints
- 4 Powertrain 9% of all complaints
- 5 Suspension 9% of all complaints
- 6 Electrical system 5% of all complaints
- 7 Engine and cooling 5% of all complaints
- 8 Tires 5% of all complaints
- Fuel system: 10 complaints (45% of all).
- Fuel/propulsion system: 6 complaints (27% of all).
- Service brakes: 3 complaints (14% of all).
- Powertrain: 2 complaints (9% of all).
- Suspension: 2 complaints (9% of all).
Symptoms owners describe
How many of the 22 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Fuel system | 10 | 0 | 0 |
| Fuel/propulsion system | 6 | 0 | 0 |
| Service brakes | 3 | 0 | 0 |
| Powertrain | 2 | 0 | 0 |
| Suspension | 2 | 0 | 0 |
| Electrical system | 1 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Tires | 1 | 0 | 0 |
| Wheels | 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.
Plastic gas tank has expanded. Likely due to ethanol in fuel causing water absorption in plastic. Tank is very difficult to install after removal. Stress on tank because of improper fit could cause cracks and leaks.
Fuel tank expanded and now seat doesn't snap onto back bracket.also paint bubbled on surface of tank.
Fuel tank was removed from motorcycle to install a new throttle cable. When fuel tank was reinstalled, the mounting holes for the fuel tank no longer lined up, the fuel tank didn't fit between the frame rails and to mount the fuel tank a considerable amount of pressure needed to be applied to force the mounting holes…
With repeated ethanol use all plastic tracks swell and could possibly fracture at the mounts resulting in fire, injury and/or death.
Plastic gas tank is starting to deform, I believe due to ethanol in the gas. I'm worried it will be come a safety issue and potentially cause sealing surfaces to warp and leak.
The plastic fuel tank on my bike is swelling visibly. On line others on the triumph forum are also complaining of this. Probably due to ethanol in the fuel. I am concerned the tank will swell until rupture and them possibly a fire.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
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.