1979 Honda Cb100n MOT Pass Rate
Pass rate for Cb100n models manufactured in 1979, based on 37 real MOT test results.
Data from official DVSA MOT testing records
1979 Honda Cb100n MOT Analysis
The 1979 Honda Cb100n has an MOT pass rate of 59.5% based on 37 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 20,590 miles on the odometer. With a 40.5% failure rate, the 1979 Cb100n is rated as "Below Average" for MOT reliability.
The leading cause of MOT failure for the 1979 Honda Cb100n is Motorcycle lighting and signalling, responsible for 2.7% 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 steering and suspension is the second most common issue at 2.7%. Motorcycle brakes follows at 2.7%.
Top failures specific to 1979 models only. The overall Cb100n 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 | Motorcycle Lighting And Signalling | 2.7% | 1 |
| 2 | Motorcycle Steering And Suspension | 2.7% | 1 |
| 3 | Motorcycle Brakes | 2.7% | 1 |
| 4 | Motorcycle Drive System | 2.7% | 1 |
| 5 | Motorcycle Driving Controls | 2.7% | 1 |
Failures per 10,000 Miles
avg. 20,590 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.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle lighting and signalling | 1.31 | 2.7% | 1 |
| Motorcycle steering and suspension | 1.31 | 2.7% | 1 |
| Motorcycle brakes | 1.31 | 2.7% | 1 |
| Motorcycle drive system | 1.31 | 2.7% | 1 |
| Motorcycle driving controls | 1.31 | 2.7% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1979 Honda Cb100n has an MOT pass rate of 59.5% based on 37 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 20,590 miles on the odometer. With a 40.5% failure rate, the 1979 Cb100n is rated as "Below Average" for MOT reliability.
If you own or are considering buying a 1979 Honda Cb100n, budget for potential repairs before each MOT. 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 20,590 miles, many of these vehicles are still in good mechanical condition.
Motorcycle lighting and signalling — 2.7% of failures
Motorcycle lighting and signalling issues account for 2.7% of MOT failures on 1979 Honda Cb100n 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 steering and suspension — 2.7% of failures
Motorcycle steering and suspension issues account for 2.7% of MOT failures on 1979 Honda Cb100n 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.
Motorcycle brakes — 2.7% of failures
Motorcycle brakes issues account for 2.7% of MOT failures on 1979 Honda Cb100n 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.