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1978 BMW R100/7 MOT Pass Rate

Pass rate for R100/7 models manufactured in 1978, based on 172 real MOT test results.

91.9%
Pass Rate
8.1%
Fail Rate
172
Total Tests
41,508
Avg Mileage

Data from official DVSA MOT testing records

1978 BMW R100/7 MOT Analysis

The 1978 BMW R100/7 has an MOT pass rate of 91.9% based on 172 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 41,508 miles on the odometer. With a 8.1% failure rate, the 1978 R100/7 is rated as "Excellent" for MOT reliability.

The leading cause of MOT failure for the 1978 BMW R100/7 is Motorcycle lighting and signalling, responsible for 1.2% of failures. Motorcycle lighting and signalling 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 range from £100–400. Motorcycle brakes is the second most common issue at 0.6%.

Top failures specific to 1978 models only. The overall R100/7 page may show different rankings.

What Fails Most

Motorcycle lighting and signalling 1.2%
Motorcycle brakes 0.6%

What Fails on This Car?

Click a category to see specific failure items.

View as table
MOT failure categories ranked by failure rate
RankFailure CategoryRate (%)Count
1Motorcycle Lighting And Signalling1.2%2
2Motorcycle Brakes0.6%1

Failures per 10,000 Miles

avg. 41,508 mi

For 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.

Motorcycle lighting and signalling0.28% per 10K miMotorcycle brakes0.14% per 10K mi
View as table
Mileage-normalised failure rates by category
CategoryRate / 10K miRaw %Count
Motorcycle lighting and signalling0.281.2%2
Motorcycle brakes0.140.6%1

Mileage Statistics

41,508
Mean
40,513
Median
27,731
25th Percentile
60,703
75th Percentile
1.95% failures per 10K miles

Mileage-adjusted failure rate — accounts for how much this model year is typically driven.

About This Data

The 1978 BMW R100/7 has an MOT pass rate of 91.9% based on 172 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 41,508 miles on the odometer. With a 8.1% failure rate, the 1978 R100/7 is rated as "Excellent" for MOT reliability.

If you own or are considering buying a 1978 BMW R100/7, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle lighting and signalling: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights. With relatively low average mileage of 41,508 miles, many of these vehicles are still in good mechanical condition.

Motorcycle lighting and signalling — 1.2% of failures

Motorcycle lighting and signalling issues account for 1.2% of MOT failures on 1978 BMW R100/7 models. Motorcycle lighting and signalling 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.

Motorcycle brakes — 0.6% of failures

Motorcycle brakes issues account for 0.6% of MOT failures on 1978 BMW R100/7 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.

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