Electrical
Filed Jul 12, 2026
Inaccurate speedometer. Dash shows 46 actual speed 40
- NHTSA ID
- 11749791
- Incident
- Jul 10, 2026
2025 Triumph Speed 400
Recalls, owner-reported complaints, investigations and safety data
Data refreshed
Owner complaintsComplaints 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
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
0
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
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.
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Overview
Our database contains 4 NHTSA owner-reported complaints for the 2025 Triumph Speed 400, most frequently naming the electrical, engine and exterior lighting categories. 50 manufacturer communications are on file.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaint activity over time
When owners filed reports about this model year
Not enough dated records to plot a meaningful trend — 3 months of data.
What owners report
Complaints grouped by the component NHTSA recorded
- Electrical342.9%
- Engine228.6%
- Exterior lighting114.3%
- Powertrain (other)114.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Safety recalls
No recalls in our database for this model year
That does not guarantee a specific vehicle is unaffected — recalls are issued against VINs, and new campaigns are announced regularly. Check a VIN on NHTSA.gov.
Recent owner complaints
Reports submitted to NHTSA, shown in the owner's own words
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
Manufacturer communications
A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.
COM1-35109
ELECTRICAL SYSTEM
Dealer notice announcing the availability of Triumph Diagnostic Tool 2026-07 and dealers should begin using it immediately.
COM2 - 34886
ELECTRICAL SYSTEM
Dealer notice announcing the availability of Triumph Diagnostic Tool 2026-06.1 and dealers should begin using it immediately.
COM6 - 34491
ELECTRICAL SYSTEM
Dealer notice announcing the availability of Triumph Diagnostic Tool version 2026-06 and dealers should begin using it immediately.
COM5 - 34490
Dealer notice announcing the availability of Technical Bulletin 264.
TB264
Technical Bulletin 264 provides instructions that relates to: Triumph Diagnostic Tool - New Motorcycle Connection and Diagnostics Workflow, Triumph Diagnostic Tool - End of Support for Microsoft Windows 10.
COM4 - 34435
ELECTRICAL SYSTEM
Dealer notice advising the availalbility of TDT version 2026-05.2 which resolves the ABS as Not Connected issues in SmartScan, on Tracker 400 & Thruxton 400 models.
Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.
Compare model years
Complaint and recall counts across every year of this model
| Year | Complaints | Recalls | Investigations | Issue Index |
|---|---|---|---|---|
| 2026 | 0 | 0 | 0 | — |
| 2025Viewing | 4 | 0 | 0 | — |
| 2024 | 9 | 0 | 0 | — |
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. Older model years have had longer for reports to accumulate.