Honda Sl125 MOT Pass Rate
Overall pass rate across all manufacture years, based on 133 real MOT test results. Failure rate: 22.6%.
Data from official DVSA MOT testing records
Honda Sl125 MOT Reliability Overview
The Honda Sl125 is a rare vehicle in the UK, with 133 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 77.4% and a failure rate of 22.6%, which is well above the UK average of approximately 37%.
Based on this data, the Honda Sl125 earns a "Excellent" reliability rating. The average Honda Sl125 presents for MOT with approximately 12,817 miles on the clock. Manufacture year matters: 1971 models achieve the highest pass rate at 81.0%, while 1975 models have the lowest at 73.9%. This 7.1 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Honda Sl125 is Motorcycle lighting and signalling, affecting 20.3% of all tests. 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. The second most common issue is Motorcycle tyres and wheels at 9.0%. Motorcycle brakes rounds out the top three at 6.8%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Pass Rate by Manufacture Year
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
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 | 22.6% | 30 |
| 2 | Motorcycle Tyres And Wheels | 12.8% | 17 |
| 3 | Motorcycle Steering And Suspension | 6.8% | 9 |
| 4 | Motorcycle Brakes | 6.8% | 9 |
| 5 | Motorcycle Drive System | 5.3% | 7 |
| 6 | Motorcycle Fuel And Exhaust | 2.3% | 3 |
| 7 | Motorcycle Body And Structure | 2.3% | 3 |
| 8 | Motorcycle Reg Plates And Vin | 0.8% | 1 |
| 9 | Motorcycle Wheels | 0.8% | 1 |
| 10 | Motorcycle Audible Warning (Horn) | 0.8% | 1 |
Failures per 10,000 Miles
avg. 12,817 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 | 17.60 | 22.6% | 30 |
| Motorcycle tyres and wheels | 9.97 | 12.8% | 17 |
| Motorcycle steering and suspension | 5.28 | 6.8% | 9 |
| Motorcycle brakes | 5.28 | 6.8% | 9 |
| Motorcycle drive system | 4.11 | 5.3% | 7 |
| Motorcycle fuel and exhaust | 1.76 | 2.3% | 3 |
| Motorcycle body and structure | 1.76 | 2.3% | 3 |
| Motorcycle reg plates and vin | 0.59 | 0.8% | 1 |
| Motorcycle wheels | 0.59 | 0.8% | 1 |
| Motorcycle audible warning (Horn) | 0.59 | 0.8% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Honda Sl125 has 12,817 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Honda Sl125 has a mileage-adjusted failure rate of 17.63% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Honda Sl125 MOT Data
The Honda Sl125 is a rare vehicle in the UK, with 133 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 77.4% and a failure rate of 22.6%, which is well above the UK average of approximately 37%.
For Honda Sl125 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle tyres and wheels for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Sl125 is likely to perform.
Motorcycle lighting and signalling — 20.3% of failures
Motorcycle lighting and signalling issues account for 20.3% of MOT failures on the Honda Sl125. 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 tyres and wheels — 9.0% of failures
Motorcycle tyres and wheels issues account for 9.0% of MOT failures on the Honda Sl125. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Motorcycle brakes — 6.8% of failures
Motorcycle brakes issues account for 6.8% of MOT failures on the Honda Sl125. 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).
Frequently Asked Questions
What is the MOT pass rate for the Honda Sl125?
Based on 133 MOT tests in our database, the Honda Sl125 has an overall pass rate of 77.4% (22.6% fail rate).
What are the most common MOT failures on a Honda Sl125?
The top 3 reasons a Honda Sl125 fails its MOT are: 1. Motorcycle lighting and signalling (20.3%), 2. Motorcycle tyres and wheels (9.0%), 3. Motorcycle brakes (6.8%). Check these areas before booking your MOT.
Is the Honda Sl125 reliable?
With a 22.6% MOT failure rate, the Sl125 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Honda Sl125?
Based on failure data, focus on: Motorcycle lighting and signalling (20.3%); Motorcycle tyres and wheels (9.0%); Motorcycle brakes (6.8%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.