Lambretta J50 MOT Pass Rate
Overall pass rate across all manufacture years, based on 117 real MOT test results. Failure rate: 16.2%.
Data from official DVSA MOT testing records
Lambretta J50 MOT Reliability Overview
The Lambretta J50 is a rare vehicle in the UK, with 117 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 83.8% and a failure rate of 16.2%, which is well above the UK average of approximately 37%.
Based on this data, the Lambretta J50 earns a "Excellent" reliability rating. The average Lambretta J50 presents for MOT with approximately 6,233 miles on the clock. The 1966 manufacture year performs best with a 77.8% pass rate.
The most common MOT failure for the Lambretta J50 is Motorcycle lighting and signalling, affecting 12.0% 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 brakes at 11.1%. Motorcycle steering and suspension rounds out the top three at 10.3%. 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 Brakes | 14.5% | 17 |
| 2 | Motorcycle Lighting And Signalling | 12.8% | 15 |
| 3 | Motorcycle Steering And Suspension | 11.1% | 13 |
| 4 | Motorcycle Tyres And Wheels | 6.8% | 8 |
| 5 | Motorcycle Driving Controls | 0.9% | 1 |
| 6 | Motorcycle Body And Structure | 0.9% | 1 |
| 7 | Motorcycle Fuel And Exhaust | 0.9% | 1 |
| 8 | Motorcycle Tyres | 0.9% | 1 |
Failures per 10,000 Miles
avg. 6,233 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 brakes | 23.31 | 14.5% | 17 |
| Motorcycle lighting and signalling | 20.57 | 12.8% | 15 |
| Motorcycle steering and suspension | 17.83 | 11.1% | 13 |
| Motorcycle tyres and wheels | 10.97 | 6.8% | 8 |
| Motorcycle driving controls | 1.37 | 0.9% | 1 |
| Motorcycle body and structure | 1.37 | 0.9% | 1 |
| Motorcycle fuel and exhaust | 1.37 | 0.9% | 1 |
| Motorcycle tyres | 1.37 | 0.9% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Lambretta J50 has 6,233 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 Lambretta J50 has a mileage-adjusted failure rate of 25.99% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Lambretta J50 MOT Data
The Lambretta J50 is a rare vehicle in the UK, with 117 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 83.8% and a failure rate of 16.2%, which is well above the UK average of approximately 37%.
For Lambretta J50 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 brakes 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 J50 is likely to perform.
Motorcycle lighting and signalling — 12.0% of failures
Motorcycle lighting and signalling issues account for 12.0% of MOT failures on the Lambretta J50. 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 — 11.1% of failures
Motorcycle brakes issues account for 11.1% of MOT failures on the Lambretta J50. 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).
Motorcycle steering and suspension — 10.3% of failures
Motorcycle steering and suspension issues account for 10.3% of MOT failures on the Lambretta J50. 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.
Frequently Asked Questions
What is the MOT pass rate for the Lambretta J50?
Based on 117 MOT tests in our database, the Lambretta J50 has an overall pass rate of 83.8% (16.2% fail rate).
What are the most common MOT failures on a Lambretta J50?
The top 3 reasons a Lambretta J50 fails its MOT are: 1. Motorcycle lighting and signalling (12.0%), 2. Motorcycle brakes (11.1%), 3. Motorcycle steering and suspension (10.3%). Check these areas before booking your MOT.
Is the Lambretta J50 reliable?
With a 16.2% MOT failure rate, the J50 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Lambretta J50?
Based on failure data, focus on: Motorcycle lighting and signalling (12.0%); Motorcycle brakes (11.1%); Motorcycle steering and suspension (10.3%). 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.