Triumph Hearld MOT Pass Rate
Overall pass rate across all manufacture years, based on 55 real MOT test results. Failure rate: 45.5%.
Data from official DVSA MOT testing records
Triumph Hearld MOT Reliability Overview
The Triumph Hearld is a rare vehicle in the UK, with 55 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 54.5% and a failure rate of 45.5%, which is below the UK average of approximately 37%.
Based on this data, the Triumph Hearld earns a "Poor" reliability rating. The average Triumph Hearld presents for MOT with approximately 61,292 miles on the clock.
The most common MOT failure for the Triumph Hearld is Lamps, Reflectors and Electrical Equipment, affecting 56.4% of all tests. 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. The second most common issue is Brakes at 52.7%. Steering rounds out the top three at 30.9%. 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
* 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 | Lamps, Reflectors And Electrical Equipment | 63.6% | 35 |
| 2 | Brakes | 60.0% | 33 |
| 3 | Steering | 30.9% | 17 |
| 4 | Body, Structure And General Items | 23.6% | 13 |
| 5 | Suspension | 16.4% | 9 |
| 6 | Driver's View Of The Road | 7.3% | 4 |
| 7 | Non-component Advisories | 5.5% | 3 |
| 8 | Tyres | 5.5% | 3 |
| 9 | Noise, Emissions And Leaks | 3.6% | 2 |
| 10 | Exhaust, Fuel And Emissions | 3.6% | 2 |
| 11 | Seat Belts And Supplementary Restraint Systems | 1.8% | 1 |
Failures per 10,000 Miles
avg. 61,292 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 |
|---|---|---|---|
| Lamps & Electrical | 10.38 | 63.6% | 35 |
| Brakes | 9.79 | 60.0% | 33 |
| Steering | 5.04 | 30.9% | 17 |
| Body & Structure | 3.86 | 23.6% | 13 |
| Suspension | 2.67 | 16.4% | 9 |
| Visibility | 1.19 | 7.3% | 4 |
| Non-component advisories | 0.89 | 5.5% | 3 |
| Tyres | 0.89 | 5.5% | 3 |
| Noise, emissions and leaks | 0.59 | 3.6% | 2 |
| Emissions & Exhaust | 0.59 | 3.6% | 2 |
| Seat Belts | 0.30 | 1.8% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Triumph Hearld has 61,292 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 Hearld has a mileage-adjusted failure rate of 7.42% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Triumph Hearld MOT Data
The Triumph Hearld is a rare vehicle in the UK, with 55 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 54.5% and a failure rate of 45.5%, which is below the UK average of approximately 37%.
For Triumph Hearld owners, these results suggest above-average failure risk — thorough pre-MOT checks are recommended. Focus your pre-MOT checks on lamps, reflectors and electrical equipment and brakes 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 Hearld is likely to perform.
Lamps, Reflectors and Electrical Equipment — 56.4% of failures
Lamps, Reflectors and Electrical Equipment issues account for 56.4% of MOT failures on the Triumph Hearld. 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.
Brakes — 52.7% of failures
Brakes issues account for 52.7% of MOT failures on the Triumph Hearld. 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).
Steering — 30.9% of failures
Steering issues account for 30.9% of MOT failures on the Triumph Hearld. Steering failures include excessive play in the steering wheel, leaking power steering fluid, worn track rod ends, and damaged steering rack. These affect vehicle control and are closely related to suspension wear. Typical repair costs: £150–600. Pre-MOT check: Check for excessive steering wheel play (more than a few inches of free movement). Listen for whining from the power steering pump. Look for fluid leaks under the car near the front wheels.
Frequently Asked Questions
What is the MOT pass rate for the Triumph Hearld?
Based on 55 (based on limited data) MOT tests in our database, the Triumph Hearld has an overall pass rate of 54.5% (45.5% fail rate).
What are the most common MOT failures on a Triumph Hearld?
The top 3 reasons a Triumph Hearld fails its MOT are: 1. Lamps, Reflectors and Electrical Equipment (56.4%), 2. Brakes (52.7%), 3. Steering (30.9%). Check these areas before booking your MOT.
Is the Triumph Hearld reliable?
With a 45.5% MOT failure rate, the Hearld is less reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Triumph Hearld?
Based on failure data, focus on: Lamps, Reflectors and Electrical Equipment (56.4%); Brakes (52.7%); Steering (30.9%). 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.