Inaccurate speedometer. Dash shows 46 actual speed 40
2025-2025 · 1 model year
Triumph Speed 400 Problems by year
Owners have filed 4 complaints about the Triumph Speed 400 across 1 model year, and it has 0 recalls. The 2025 has the most complaints once its age is allowed for (4). The most reported problem area is the electrical system, followed by the engine & cooling.
- Complaints
- 4
- Recalls
- 0
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Speed 400 complaints by model year
Highlighted: the year with the most complaints for its age. Older vehicles have had more time to collect complaints - the Safety Index grade allows for that.
| Year | Complaints | Recalls | Grade |
|---|---|---|---|
| 2025 | 4 | 0 | - |
Most common Speed 400 problems
Latest Speed 400 complaints
Speedometer is inaccurate. Guage indicates 46 actual speed 40
2025 Triumph Speed 400 - Moisture-Triggered Limp Mode and Loss of Turn Signals My 2025 Triumph Speed 400 enters limp mode and displays a check engine light and wrench warning whenever ridden in rain or high humidity. When this occurs, turn signals and hazard lights also stop functioning, leaving me without signaling capability in traffic. Both issues clear only after the bike dries out. The battery is disconnected and reset has not worked in the past, and continues not to help the issue. At my break-in service...
Read the full complaint
(~150 miles ago), I reported the issue. The dealer applied dielectric grease to the speedometer connectors and checked the battery terminals, but the fix was unverified as it didn't rain until today. On 6/10/26 after riding to work in the rain, the bike entered full limp mode when I tried to leave - power was severely restricted and turn signals and hazards were completely inoperative. The simultaneous loss of power and signaling in traffic is a serious safety hazard with no advance warning to the rider. This is a documented issue across multiple owner forums affecting 2024 and 2025 Speed 400s, and Triumph is aware but has issued no recall or formal remedy. I am requesting NHTSA investigate and compel Triumph to issue a fix.
While riding at 15 to 20 miles an hour, the motorcycle engine installed without warning, causing a loss of power. This required an emergency maneuver to avoid being hit from behind. This is a recurring issue documented by the dealer.
Questions about the Triumph Speed 400
Which Triumph Speed 400 years have the most problems?
By the number of complaints owners filed with NHTSA: 2025 (4). Allowing for how long each has been on the road, the 2025 stands out most. Complaint counts also rise with sales, so compare years of the same model rather than different models.
What are the most common Triumph Speed 400 problems?
Across every model year, owners report problems with the electrical system (3), engine & cooling (2), lights (1) most often.
How many recalls does the Triumph Speed 400 have?
NHTSA lists no recalls for any Triumph Speed 400 model year on file.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data