Triumph Street Triple MOT Pass Rate
Overall pass rate across all manufacture years, based on 35,171 real MOT test results. Failure rate: 12.2%.
Data from official DVSA MOT testing records
Triumph Street Triple MOT Reliability Overview
The Triumph Street Triple is a relatively common sight on UK roads, with 35,171 MOT test results recorded in our database spanning 12 manufacture years. It has an overall MOT pass rate of 87.8% and a failure rate of 12.2%, which is well above the UK average of approximately 37%.
Based on this data, the Triumph Street Triple earns a "Excellent" reliability rating. The average Triumph Street Triple presents for MOT with approximately 13,089 miles on the clock. Manufacture year matters: 2016 models achieve the highest pass rate at 92.7%, while 2018 models have the lowest at 83.3%. This 9.4 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Triumph Street Triple is Motorcycle brakes, affecting 4.9% of all tests. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. The second most common issue is Motorcycle lighting and signalling at 4.6%. Motorcycle lamps and reflectors rounds out the top three at 3.9%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Best Year to Buy
📈 How Each Vintage Ages
Tracking how each manufacture year's MOT pass rate changes as the car ages. Showing 7 vintages — click year chips to highlight.
Multi-line chart showing how different Triumph Street Triple vintages degrade over time, from age 3 to 20 years.
Only vintages with 100+ tests in at least 3 different test years are shown. Fleet average is the UK-wide pass rate for all cars at each age.
📉 How Age Affects Reliability
MOT failure rate by vehicle age for the Triumph Street Triple. The dashed red line marks when the manufacturer warranty typically expires (3 years).
Line chart showing MOT failure rate by vehicle age from 3 to 17 years, with warranty expiry marked at 3 years.
💡 What does the warranty cliff mean?
The Triumph Street Triple actually sees a 14% decrease in failure rate after the warranty period. This is likely due to survivorship bias — unreliable cars are already off the road by this age. Peak failure occurs at age 16 (15.2% fail rate).
Note: pass rates may improve for very old vehicles due to survivorship bias — only well-maintained cars remain on the road.
Pass Rate by Manufacture Year
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Brakes | 5.0% | 1,752 |
| 2 | Motorcycle Lighting And Signalling | 4.8% | 1,686 |
| 3 | Motorcycle Lamps And Reflectors | 3.9% | 1,376 |
| 4 | Motorcycle Tyres And Wheels | 2.2% | 759 |
| 5 | Motorcycle Structure And Attachments | 1.9% | 657 |
| 6 | Motorcycle Tyres | 1.4% | 476 |
| 7 | Motorcycle Steering And Suspension | 1.4% | 475 |
| 8 | Motorcycle Drive System | 0.9% | 306 |
| 9 | Motorcycle Audible Warning (Horn) | 0.9% | 299 |
| 10 | Motorcycle Suspension | 0.8% | 281 |
| 11 | Motorcycle Reg Plates And Vin | 0.7% | 249 |
| 12 | Motorcycle Fuel And Exhaust | 0.7% | 235 |
| 13 | Identification Of The Vehicle | 0.6% | 210 |
| 14 | Motorcycle Steering | 0.6% | 197 |
| 15 | Motorcycle Body And Structure | 0.3% | 111 |
Failures per 10,000 Miles
avg. 13,089 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle brakes | 3.81 | 5.0% | 1,752 |
| Motorcycle lighting and signalling | 3.66 | 4.8% | 1,686 |
| Motorcycle lamps and reflectors | 2.99 | 3.9% | 1,376 |
| Motorcycle tyres and wheels | 1.65 | 2.2% | 759 |
| Motorcycle structure and attachments | 1.43 | 1.9% | 657 |
| Motorcycle tyres | 1.03 | 1.4% | 476 |
| Motorcycle steering and suspension | 1.03 | 1.4% | 475 |
| Motorcycle drive system | 0.66 | 0.9% | 306 |
| Motorcycle audible warning (Horn) | 0.65 | 0.9% | 299 |
| Motorcycle suspension | 0.61 | 0.8% | 281 |
| Motorcycle reg plates and vin | 0.54 | 0.7% | 249 |
| Motorcycle fuel and exhaust | 0.51 | 0.7% | 235 |
| Identification of the vehicle | 0.46 | 0.6% | 210 |
| Motorcycle steering | 0.43 | 0.6% | 197 |
| Motorcycle body and structure | 0.24 | 0.3% | 111 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph Street Triple has 13,089 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Triumph Street Triple has a mileage-adjusted failure rate of 9.32% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Triumph Street Triple MOT Data
The Triumph Street Triple is a relatively common sight on UK roads, with 35,171 MOT test results recorded in our database spanning 12 manufacture years. It has an overall MOT pass rate of 87.8% and a failure rate of 12.2%, which is well above the UK average of approximately 37%.
For Triumph Street Triple owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle brakes and motorcycle lighting and signalling for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Street Triple is likely to perform.
Motorcycle brakes — 4.9% of failures
Motorcycle brakes issues account for 4.9% of MOT failures on the Triumph Street Triple. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Motorcycle lighting and signalling — 4.6% of failures
Motorcycle lighting and signalling issues account for 4.6% of MOT failures on the Triumph Street Triple. Motorcycle lighting and signalling issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Motorcycle lamps and reflectors — 3.9% of failures
Motorcycle lamps and reflectors issues account for 3.9% of MOT failures on the Triumph Street Triple. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Frequently Asked Questions
What is the MOT pass rate for the Triumph Street Triple?
Based on 35,171 MOT tests in our database, the Triumph Street Triple has an overall pass rate of 87.8% (12.2% fail rate).
What are the most common MOT failures on a Triumph Street Triple?
The top 3 reasons a Triumph Street Triple fails its MOT are: 1. Motorcycle brakes (4.9%), 2. Motorcycle lighting and signalling (4.6%), 3. Motorcycle lamps and reflectors (3.9%). Check these areas before booking your MOT.
Is the Triumph Street Triple reliable?
With a 12.2% MOT failure rate, the Street Triple is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph Street Triple?
Based on failure data, focus on: Motorcycle brakes (4.9%); Motorcycle lighting and signalling (4.6%); Motorcycle lamps and reflectors (3.9%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.