Triumph Marlin MOT Pass Rate
Overall pass rate across all manufacture years, based on 40 real MOT test results. Failure rate: 27.5%.
Data from official DVSA MOT testing records
Triumph Marlin MOT Reliability Overview
The Triumph Marlin is a rare vehicle in the UK, with 40 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 72.5% and a failure rate of 27.5%, which is above the UK average of approximately 37%.
Based on this data, the Triumph Marlin earns a "Very Good" reliability rating. The average Triumph Marlin presents for MOT with approximately 49,505 miles on the clock.
The most common MOT failure for the Triumph Marlin is Brakes, affecting 42.5% 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 Suspension at 17.5%. Lamps, Reflectors and Electrical Equipment rounds out the top three at 15.0%. 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
* 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 | Brakes | 50.0% | 20 |
| 2 | Lamps, Reflectors And Electrical Equipment | 25.0% | 10 |
| 3 | Suspension | 17.5% | 7 |
| 4 | Exhaust, Fuel And Emissions | 10.0% | 4 |
| 5 | Driver's View Of The Road | 5.0% | 2 |
| 6 | Tyres | 5.0% | 2 |
Failures per 10,000 Miles
avg. 49,505 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 |
|---|---|---|---|
| Brakes | 10.10 | 50.0% | 20 |
| Lamps & Electrical | 5.04 | 25.0% | 10 |
| Suspension | 3.53 | 17.5% | 7 |
| Emissions & Exhaust | 2.02 | 10.0% | 4 |
| Visibility | 1.01 | 5.0% | 2 |
| Tyres | 1.01 | 5.0% | 2 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph Marlin has 49,505 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 Marlin has a mileage-adjusted failure rate of 5.55% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Triumph Marlin MOT Data
The Triumph Marlin is a rare vehicle in the UK, with 40 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 72.5% and a failure rate of 27.5%, which is above the UK average of approximately 37%.
For Triumph Marlin owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on brakes 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 Marlin is likely to perform.
Brakes — 42.5% of failures
Brakes issues account for 42.5% of MOT failures on the Triumph Marlin. 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).
Suspension — 17.5% of failures
Suspension issues account for 17.5% of MOT failures on the Triumph Marlin. 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.
Lamps, Reflectors and Electrical Equipment — 15.0% of failures
Lamps, Reflectors and Electrical Equipment issues account for 15.0% of MOT failures on the Triumph Marlin. 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 Marlin?
Based on 40 (based on limited data) MOT tests in our database, the Triumph Marlin has an overall pass rate of 72.5% (27.5% fail rate).
What are the most common MOT failures on a Triumph Marlin?
The top 3 reasons a Triumph Marlin fails its MOT are: 1. Brakes (42.5%), 2. Suspension (17.5%), 3. Lamps, Reflectors and Electrical Equipment (15.0%). Check these areas before booking your MOT.
Is the Triumph Marlin reliable?
With a 27.5% MOT failure rate, the Marlin is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph Marlin?
Based on failure data, focus on: Brakes (42.5%); Suspension (17.5%); Lamps, Reflectors and Electrical Equipment (15.0%). 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.