1981 Daimler Sovereign Vanden Plas MOT Pass Rate
Pass rate for Sovereign Vanden Plas models manufactured in 1981, based on 35 real MOT test results.
Data from official DVSA MOT testing records
1981 Daimler Sovereign Vanden Plas MOT Analysis
The 1981 Daimler Sovereign Vanden Plas has an MOT pass rate of 57.1% based on 35 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 68,109 miles on the odometer. With a 42.9% failure rate, the 1981 Sovereign Vanden Plas is rated as "Below Average" for MOT reliability.
The leading cause of MOT failure for the 1981 Daimler Sovereign Vanden Plas is Suspension, responsible for 14.3% 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. Non-component advisories is the second most common issue at 5.7%. Exhaust, Fuel and Emissions follows at 5.7%.
Top failures specific to 1981 models only. The overall Sovereign Vanden Plas page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Suspension | 14.3% | 5 |
| 2 | Non-component Advisories | 5.7% | 2 |
| 3 | Exhaust, Fuel And Emissions | 5.7% | 2 |
| 4 | Lamps, Reflectors And Electrical Equipment | 2.9% | 1 |
| 5 | Body, Structure And General Items | 2.9% | 1 |
| 6 | Brakes | 2.9% | 1 |
| 7 | Driver's View Of The Road | 2.9% | 1 |
Failures per 10,000 Miles
avg. 68,109 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 | 2.10 | 14.3% | 5 |
| Non-component advisories | 0.84 | 5.7% | 2 |
| Emissions & Exhaust | 0.84 | 5.7% | 2 |
| Lamps & Electrical | 0.42 | 2.9% | 1 |
| Body & Structure | 0.42 | 2.9% | 1 |
| Brakes | 0.42 | 2.9% | 1 |
| Visibility | 0.42 | 2.9% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1981 Daimler Sovereign Vanden Plas has an MOT pass rate of 57.1% based on 35 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 68,109 miles on the odometer. With a 42.9% failure rate, the 1981 Sovereign Vanden Plas is rated as "Below Average" for MOT reliability.
If you own or are considering buying a 1981 Daimler Sovereign Vanden Plas, 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 68,109 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Suspension — 14.3% of failures
Suspension issues account for 14.3% of MOT failures on 1981 Daimler Sovereign Vanden Plas 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.
Non-component advisories — 5.7% of failures
Non-component advisories issues account for 5.7% of MOT failures on 1981 Daimler Sovereign Vanden Plas models. Non-component advisories 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.
Exhaust, Fuel and Emissions — 5.7% of failures
Exhaust, Fuel and Emissions issues account for 5.7% of MOT failures on 1981 Daimler Sovereign Vanden Plas models. Emissions failures occur when exhaust gases exceed legal limits for carbon monoxide (CO), hydrocarbons (HC), or particulate matter (diesel). Common causes include faulty oxygen sensors, clogged catalytic converters, or DPF issues on diesel vehicles. Typical repair costs: £100–1,000+. Pre-MOT check: If the engine management light is on, get it diagnosed before the MOT. For diesel cars, ensure the DPF has completed a regeneration cycle. Regular servicing and using premium fuel before the test can help.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.