Triumph T100ss MOT Pass Rate
Overall pass rate across all manufacture years, based on 456 real MOT test results. Failure rate: 7.5%.
Data from official DVSA MOT testing records
Triumph T100ss MOT Reliability Overview
The Triumph T100ss is a rare vehicle in the UK, with 456 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 92.5% and a failure rate of 7.5%, which is well above the UK average of approximately 37%.
Based on this data, the Triumph T100ss earns a "Excellent" reliability rating. The average Triumph T100ss presents for MOT with approximately 17,131 miles on the clock. Manufacture year matters: 1962 models achieve the highest pass rate at 98.3%, while 1967 models have the lowest at 80.0%. This 18.3 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Triumph T100ss is Motorcycle lighting and signalling, affecting 5.9% of all tests. 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. The second most common issue is Motorcycle steering and suspension at 2.2%. Motorcycle brakes rounds out the top three at 1.5%. 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
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 Lighting And Signalling | 6.4% | 29 |
| 2 | Motorcycle Steering And Suspension | 2.2% | 10 |
| 3 | Motorcycle Brakes | 1.8% | 8 |
| 4 | Motorcycle Tyres And Wheels | 0.9% | 4 |
| 5 | Motorcycle Driving Controls | 0.7% | 3 |
| 6 | Motorcycle Drive System | 0.7% | 3 |
| 7 | Motorcycle Body And Structure | 0.4% | 2 |
| 8 | Motorcycle Fuel And Exhaust | 0.2% | 1 |
Failures per 10,000 Miles
avg. 17,131 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 lighting and signalling | 3.71 | 6.4% | 29 |
| Motorcycle steering and suspension | 1.28 | 2.2% | 10 |
| Motorcycle brakes | 1.02 | 1.8% | 8 |
| Motorcycle tyres and wheels | 0.51 | 0.9% | 4 |
| Motorcycle driving controls | 0.38 | 0.7% | 3 |
| Motorcycle drive system | 0.38 | 0.7% | 3 |
| Motorcycle body and structure | 0.26 | 0.4% | 2 |
| Motorcycle fuel and exhaust | 0.13 | 0.2% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph T100ss has 17,131 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 T100ss has a mileage-adjusted failure rate of 4.38% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Triumph T100ss MOT Data
The Triumph T100ss is a rare vehicle in the UK, with 456 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 92.5% and a failure rate of 7.5%, which is well above the UK average of approximately 37%.
For Triumph T100ss owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle steering and suspension 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 T100ss is likely to perform.
Motorcycle lighting and signalling — 5.9% of failures
Motorcycle lighting and signalling issues account for 5.9% of MOT failures on the Triumph T100ss. 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 steering and suspension — 2.2% of failures
Motorcycle steering and suspension issues account for 2.2% of MOT failures on the Triumph T100ss. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Motorcycle brakes — 1.5% of failures
Motorcycle brakes issues account for 1.5% of MOT failures on the Triumph T100ss. 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).
Frequently Asked Questions
What is the MOT pass rate for the Triumph T100ss?
Based on 456 MOT tests in our database, the Triumph T100ss has an overall pass rate of 92.5% (7.5% fail rate).
What are the most common MOT failures on a Triumph T100ss?
The top 3 reasons a Triumph T100ss fails its MOT are: 1. Motorcycle lighting and signalling (5.9%), 2. Motorcycle steering and suspension (2.2%), 3. Motorcycle brakes (1.5%). Check these areas before booking your MOT.
Is the Triumph T100ss reliable?
With a 7.5% MOT failure rate, the T100ss is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph T100ss?
Based on failure data, focus on: Motorcycle lighting and signalling (5.9%); Motorcycle steering and suspension (2.2%); Motorcycle brakes (1.5%). 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.