Iris.bus Minibus MOT Pass Rate
Overall pass rate across all manufacture years, based on 364 real MOT test results. Failure rate: 16.5%.
Data from official DVSA MOT testing records
Iris.bus Minibus MOT Reliability Overview
The Iris.bus Minibus is a rare vehicle in the UK, with 364 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 83.5% and a failure rate of 16.5%, which is well above the UK average of approximately 37%.
Based on this data, the Iris.bus Minibus earns a "Excellent" reliability rating. The average Iris.bus Minibus presents for MOT with approximately 91,213 miles on the clock. Manufacture year matters: 2008 models achieve the highest pass rate at 88.5%, while 2004 models have the lowest at 72.1%. This 16.4 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Iris.bus Minibus is Brakes, affecting 25.5% 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 Body, chassis, structure at 12.9%. Suspension rounds out the top three at 10.7%. 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 | Brakes | 26.4% | 96 |
| 2 | Lamps, Reflectors And Electrical Equipment | 16.2% | 59 |
| 3 | Body, Chassis, Structure | 12.9% | 47 |
| 4 | Suspension | 10.7% | 39 |
| 5 | Tyres | 5.2% | 19 |
| 6 | Body, Structure And General Items | 2.2% | 8 |
| 7 | Noise, Emissions And Leaks | 1.6% | 6 |
| 8 | Driver's View Of The Road | 1.6% | 6 |
| 9 | Non-component Advisories | 1.4% | 5 |
| 10 | Steering | 1.1% | 4 |
| 11 | Seat Belts And Supplementary Restraint Systems | 1.1% | 4 |
| 12 | Visibility | 1.1% | 4 |
| 13 | Exhaust, Fuel And Emissions | 0.5% | 2 |
| 14 | Registration Plates And Vin | 0.3% | 1 |
Failures per 10,000 Miles
avg. 91,213 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 |
|---|---|---|---|
| Brakes | 2.89 | 26.4% | 96 |
| Lamps & Electrical | 1.77 | 16.2% | 59 |
| Body & Structure | 1.66 | 15.1% | 55 |
| Suspension | 1.17 | 10.7% | 39 |
| Tyres | 0.57 | 5.2% | 19 |
| Visibility | 0.30 | 2.7% | 10 |
| Noise, emissions and leaks | 0.18 | 1.6% | 6 |
| Non-component advisories | 0.15 | 1.4% | 5 |
| Steering | 0.12 | 1.1% | 4 |
| Seat Belts | 0.12 | 1.1% | 4 |
| Emissions & Exhaust | 0.06 | 0.5% | 2 |
| Registration Plates and VIN | 0.03 | 0.3% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Iris.bus Minibus has 91,213 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 Iris.bus Minibus has a mileage-adjusted failure rate of 1.81% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Iris.bus Minibus MOT Data
The Iris.bus Minibus is a rare vehicle in the UK, with 364 MOT test results recorded in our database spanning 5 manufacture years. It has an overall MOT pass rate of 83.5% and a failure rate of 16.5%, which is well above the UK average of approximately 37%.
For Iris.bus Minibus owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on brakes and body, chassis, structure 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 Minibus is likely to perform.
Brakes — 25.5% of failures
Brakes issues account for 25.5% of MOT failures on the Iris.bus Minibus. 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).
Body, chassis, structure — 12.9% of failures
Body, chassis, structure issues account for 12.9% of MOT failures on the Iris.bus Minibus. Body and structure failures include excessive corrosion, sharp edges, loose panels, and damage to the vehicle frame. Rust is the primary concern, especially on older vehicles or those exposed to road salt. Typical repair costs: £100–500+. Pre-MOT check: Inspect sills, wheel arches, door bottoms, and the chassis for rust. Surface rust is acceptable but structural corrosion or holes will fail. Check that all doors, bonnet, and boot close securely.
Suspension — 10.7% of failures
Suspension issues account for 10.7% of MOT failures on the Iris.bus Minibus. 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 Iris.bus Minibus?
Based on 364 MOT tests in our database, the Iris.bus Minibus has an overall pass rate of 83.5% (16.5% fail rate).
What are the most common MOT failures on a Iris.bus Minibus?
The top 3 reasons a Iris.bus Minibus fails its MOT are: 1. Brakes (25.5%), 2. Body, chassis, structure (12.9%), 3. Suspension (10.7%). Check these areas before booking your MOT.
Is the Iris.bus Minibus reliable?
With a 16.5% MOT failure rate, the Minibus is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Iris.bus Minibus?
Based on failure data, focus on: Brakes (25.5%); Body, chassis, structure (12.9%); Suspension (10.7%). 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.