1966 MG B Roadster MOT Pass Rate
Pass rate for B Roadster models manufactured in 1966, based on 91 real MOT test results.
Data from official DVSA MOT testing records
1966 MG B Roadster MOT Analysis
The 1966 MG B Roadster has an MOT pass rate of 76.9% based on 91 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 30,116 miles on the odometer. With a 23.1% failure rate, the 1966 B Roadster is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1966 MG B Roadster is Road Wheels, responsible for 3.3% of failures. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. Typical repair costs range from £100–400 per wheel. Suspension is the second most common issue at 3.3%. Brakes follows at 2.2%.
Top failures specific to 1966 models only. The overall B Roadster 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 | Road Wheels | 3.3% | 3 |
| 2 | Suspension | 3.3% | 3 |
| 3 | Brakes | 2.2% | 2 |
| 4 | Steering | 2.2% | 2 |
| 5 | Driver's View Of The Road | 1.1% | 1 |
| 6 | Non-component Advisories | 1.1% | 1 |
Failures per 10,000 Miles
avg. 30,116 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 |
|---|---|---|---|
| Wheels | 1.09 | 3.3% | 3 |
| Suspension | 1.09 | 3.3% | 3 |
| Brakes | 0.73 | 2.2% | 2 |
| Steering | 0.73 | 2.2% | 2 |
| Visibility | 0.36 | 1.1% | 1 |
| Non-component advisories | 0.36 | 1.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1966 MG B Roadster has an MOT pass rate of 76.9% based on 91 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 30,116 miles on the odometer. With a 23.1% failure rate, the 1966 B Roadster is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1966 MG B Roadster, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to road wheels: Visually inspect wheels for cracks, especially around the spokes and rim. Check that all wheel nuts are present and tightened. Look for signs of impact damage on alloy wheels. With relatively low average mileage of 30,116 miles, many of these vehicles are still in good mechanical condition.
Road Wheels — 3.3% of failures
Road Wheels issues account for 3.3% of MOT failures on 1966 MG B Roadster models. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. Typical repair costs: £100–400 per wheel. Pre-MOT check: Visually inspect wheels for cracks, especially around the spokes and rim. Check that all wheel nuts are present and tightened. Look for signs of impact damage on alloy wheels.
Suspension — 3.3% of failures
Suspension issues account for 3.3% of MOT failures on 1966 MG B Roadster 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.
Brakes — 2.2% of failures
Brakes issues account for 2.2% of MOT failures on 1966 MG B Roadster models. 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).
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.