1978 Triumph Dolomite 1500 Hl MOT Pass Rate
Pass rate for Dolomite 1500 Hl models manufactured in 1978, based on 32 real MOT test results.
Data from official DVSA MOT testing records
1978 Triumph Dolomite 1500 Hl MOT Analysis
The 1978 Triumph Dolomite 1500 Hl has an MOT pass rate of 59.4% based on 32 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 67,872 miles on the odometer. With a 40.6% failure rate, the 1978 Dolomite 1500 Hl is rated as "Below Average" for MOT reliability.
The leading cause of MOT failure for the 1978 Triumph Dolomite 1500 Hl is Suspension, responsible for 3.1% of failures. 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 range from £200–500.
Top failures specific to 1978 models only. The overall Dolomite 1500 Hl page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
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| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Suspension | 3.1% | 1 |
Failures per 10,000 Miles
avg. 67,872 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.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Suspension | 0.46 | 3.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1978 Triumph Dolomite 1500 Hl has an MOT pass rate of 59.4% based on 32 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 67,872 miles on the odometer. With a 40.6% failure rate, the 1978 Dolomite 1500 Hl is rated as "Below Average" for MOT reliability.
If you own or are considering buying a 1978 Triumph Dolomite 1500 Hl, budget for potential repairs before each MOT. Before your MOT, pay particular attention to suspension: 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. At 67,872 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Suspension — 3.1% of failures
Suspension issues account for 3.1% of MOT failures on 1978 Triumph Dolomite 1500 Hl models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.