Derbi Gpr50 MOT Pass Rate
Overall pass rate across all manufacture years, based on 768 real MOT test results. Failure rate: 44.5%.
Data from official DVSA MOT testing records
Derbi Gpr50 MOT Reliability Overview
The Derbi Gpr50 is a rare vehicle in the UK, with 768 MOT test results recorded in our database spanning 7 manufacture years. It has an overall MOT pass rate of 55.5% and a failure rate of 44.5%, which is slightly below the UK average of approximately 37%.
Based on this data, the Derbi Gpr50 earns a "Below Average" reliability rating. The average Derbi Gpr50 presents for MOT with approximately 11,540 miles on the clock. Manufacture year matters: 2010 models achieve the highest pass rate at 74.5%, while 2004 models have the lowest at 34.4%. This 40.1 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Derbi Gpr50 is Motorcycle brakes, affecting 35.7% of all tests. 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. The second most common issue is Motorcycle lighting and signalling at 35.2%. Motorcycle steering and suspension rounds out the top three at 33.2%. 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 | 45.1% | 346 |
| 2 | Motorcycle Brakes | 42.4% | 326 |
| 3 | Motorcycle Steering And Suspension | 40.0% | 307 |
| 4 | Motorcycle Drive System | 20.8% | 160 |
| 5 | Motorcycle Tyres And Wheels | 9.6% | 74 |
| 6 | Motorcycle Lamps And Reflectors | 9.1% | 70 |
| 7 | Motorcycle Structure And Attachments | 8.2% | 63 |
| 8 | Motorcycle Body And Structure | 6.9% | 53 |
| 9 | Motorcycle Suspension | 6.8% | 52 |
| 10 | Motorcycle Fuel And Exhaust | 5.5% | 42 |
| 11 | Motorcycle Tyres | 2.7% | 21 |
| 12 | Motorcycle Reg Plates And Vin | 2.1% | 16 |
| 13 | Motorcycle Driving Controls | 1.8% | 14 |
| 14 | Motorcycle Steering | 1.7% | 13 |
| 15 | Non-component Advisories | 0.9% | 7 |
Failures per 10,000 Miles
avg. 11,540 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 | 39.04 | 45.1% | 346 |
| Motorcycle brakes | 36.78 | 42.4% | 326 |
| Motorcycle steering and suspension | 34.64 | 40.0% | 307 |
| Motorcycle drive system | 18.05 | 20.8% | 160 |
| Motorcycle tyres and wheels | 8.35 | 9.6% | 74 |
| Motorcycle lamps and reflectors | 7.90 | 9.1% | 70 |
| Motorcycle structure and attachments | 7.11 | 8.2% | 63 |
| Motorcycle body and structure | 5.98 | 6.9% | 53 |
| Motorcycle suspension | 5.87 | 6.8% | 52 |
| Motorcycle fuel and exhaust | 4.74 | 5.5% | 42 |
| Motorcycle tyres | 2.37 | 2.7% | 21 |
| Motorcycle reg plates and vin | 1.81 | 2.1% | 16 |
| Motorcycle driving controls | 1.58 | 1.8% | 14 |
| Motorcycle steering | 1.47 | 1.7% | 13 |
| Non-component advisories | 0.79 | 0.9% | 7 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Derbi Gpr50 has 11,540 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 Derbi Gpr50 has a mileage-adjusted failure rate of 38.56% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Derbi Gpr50 MOT Data
The Derbi Gpr50 is a rare vehicle in the UK, with 768 MOT test results recorded in our database spanning 7 manufacture years. It has an overall MOT pass rate of 55.5% and a failure rate of 44.5%, which is slightly below the UK average of approximately 37%.
For Derbi Gpr50 owners, these results suggest average reliability — some preparation before MOT can improve pass chances. Focus your pre-MOT checks on motorcycle brakes and motorcycle lighting and signalling 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 Gpr50 is likely to perform.
Motorcycle brakes — 35.7% of failures
Motorcycle brakes issues account for 35.7% of MOT failures on the Derbi Gpr50. 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 lighting and signalling — 35.2% of failures
Motorcycle lighting and signalling issues account for 35.2% of MOT failures on the Derbi Gpr50. 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 — 33.2% of failures
Motorcycle steering and suspension issues account for 33.2% of MOT failures on the Derbi Gpr50. 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 Derbi Gpr50?
Based on 768 MOT tests in our database, the Derbi Gpr50 has an overall pass rate of 55.5% (44.5% fail rate).
What are the most common MOT failures on a Derbi Gpr50?
The top 3 reasons a Derbi Gpr50 fails its MOT are: 1. Motorcycle brakes (35.7%), 2. Motorcycle lighting and signalling (35.2%), 3. Motorcycle steering and suspension (33.2%). Check these areas before booking your MOT.
Is the Derbi Gpr50 reliable?
With a 44.5% MOT failure rate, the Gpr50 is about average compared to the UK average of ~40%.
What should I check before an MOT on my Derbi Gpr50?
Based on failure data, focus on: Motorcycle brakes (35.7%); Motorcycle lighting and signalling (35.2%); Motorcycle steering and suspension (33.2%). 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.