RoadVitals

2025 Triumph Speed 400 Owner Complaints

Reports submitted to NHTSA by owners and drivers, shown in full

Data refreshed

Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
4
Latest Jul 12, 2026
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
4
Reports on file since Jan 16, 2026

What this page shows

Our database holds 4 NHTSA owner-reported complaints for the 2025 Triumph Speed 400. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Complaints, most recent first

Showing 1–4 of 4

Electrical
Filed Jul 12, 2026

Inaccurate speedometer. Dash shows 46 actual speed 40

NHTSA ID
11749791
Incident
Jul 10, 2026
Electrical
Filed Jul 12, 2026

Speedometer is inaccurate. Guage indicates 46 actual speed 40

NHTSA ID
11749790
Incident
Jul 10, 2026
ElectricalEngineExterior lighting
Filed Jun 10, 2026

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 (~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.

NHTSA ID
11743373
Incident
Jun 10, 2026
EnginePowertrain (other)
Filed Jan 16, 2026

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.

NHTSA ID
11711361
Incident
Dec 1, 2025

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Data sources

Data on this page last refreshed .