1998 Proton Compact Duo MOT Pass Rate
Pass rate for Compact Duo models manufactured in 1998, based on 32 real MOT test results.
Data from official DVSA MOT testing records
1998 Proton Compact Duo MOT Analysis
The 1998 Proton Compact Duo has an MOT pass rate of 18.8% based on 32 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 99,279 miles on the odometer. With a 81.2% failure rate, the 1998 Compact Duo is rated as "Very Poor" for MOT reliability.
The leading cause of MOT failure for the 1998 Proton Compact Duo is Suspension, responsible for 9.4% 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. Exhaust, Fuel and Emissions is the second most common issue at 6.3%.
Top failures specific to 1998 models only. The overall Compact Duo 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 | 9.4% | 3 |
| 2 | Exhaust, Fuel And Emissions | 6.3% | 2 |
Failures per 10,000 Miles
avg. 99,279 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 | 0.94 | 9.4% | 3 |
| Emissions & Exhaust | 0.63 | 6.3% | 2 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1998 Proton Compact Duo has an MOT pass rate of 18.8% based on 32 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 99,279 miles on the odometer. With a 81.2% failure rate, the 1998 Compact Duo is rated as "Very Poor" for MOT reliability.
If you own or are considering buying a 1998 Proton Compact Duo, be prepared for above-average maintenance costs. 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. With an average mileage of 99,279 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Suspension — 9.4% of failures
Suspension issues account for 9.4% of MOT failures on 1998 Proton Compact Duo 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.
Exhaust, Fuel and Emissions — 6.3% of failures
Exhaust, Fuel and Emissions issues account for 6.3% of MOT failures on 1998 Proton Compact Duo 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.