Caterham R400 MOT Pass Rate
Overall pass rate across all manufacture years, based on 126 real MOT test results. Failure rate: 22.2%.
Data from official DVSA MOT testing records
Caterham R400 MOT Reliability Overview
The Caterham R400 is a rare vehicle in the UK, with 126 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 77.8% and a failure rate of 22.2%, which is well above the UK average of approximately 37%.
Based on this data, the Caterham R400 earns a "Excellent" reliability rating. The average Caterham R400 presents for MOT with approximately 19,039 miles on the clock. The 2007 manufacture year performs best with a 87.5% pass rate.
The most common MOT failure for the Caterham R400 is Suspension, affecting 23.8% of all tests. 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. The second most common issue is Tyres at 18.3%. Lamps, Reflectors and Electrical Equipment rounds out the top three at 17.5%. 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 | Lamps, Reflectors And Electrical Equipment | 24.6% | 31 |
| 2 | Suspension | 23.8% | 30 |
| 3 | Tyres | 18.3% | 23 |
| 4 | Exhaust, Fuel And Emissions | 10.3% | 13 |
| 5 | Identification Of The Vehicle | 4.0% | 5 |
| 6 | Steering | 3.2% | 4 |
| 7 | Brakes | 2.4% | 3 |
| 8 | Registration Plates And Vin | 2.4% | 3 |
| 9 | Visibility | 1.6% | 2 |
| 10 | Noise, Emissions And Leaks | 0.8% | 1 |
| 11 | Driver's View Of The Road | 0.8% | 1 |
| 12 | Items Not Tested | 0.8% | 1 |
| 13 | Non-component Advisories | 0.8% | 1 |
Failures per 10,000 Miles
avg. 19,039 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 |
|---|---|---|---|
| Lamps & Electrical | 12.92 | 24.6% | 31 |
| Suspension | 12.51 | 23.8% | 30 |
| Tyres | 9.59 | 18.3% | 23 |
| Emissions & Exhaust | 5.42 | 10.3% | 13 |
| Identification of the vehicle | 2.08 | 4.0% | 5 |
| Steering | 1.67 | 3.2% | 4 |
| Brakes | 1.25 | 2.4% | 3 |
| Registration Plates and VIN | 1.25 | 2.4% | 3 |
| Visibility | 1.25 | 2.4% | 3 |
| Noise, emissions and leaks | 0.42 | 0.8% | 1 |
| Items Not Tested | 0.42 | 0.8% | 1 |
| Non-component advisories | 0.42 | 0.8% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Caterham R400 has 19,039 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 Caterham R400 has a mileage-adjusted failure rate of 11.66% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Caterham R400 MOT Data
The Caterham R400 is a rare vehicle in the UK, with 126 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 77.8% and a failure rate of 22.2%, which is well above the UK average of approximately 37%.
For Caterham R400 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on suspension and tyres 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 R400 is likely to perform.
Suspension — 23.8% of failures
Suspension issues account for 23.8% of MOT failures on the Caterham R400. 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.
Tyres — 18.3% of failures
Tyres issues account for 18.3% of MOT failures on the Caterham R400. 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.
Lamps, Reflectors and Electrical Equipment — 17.5% of failures
Lamps, Reflectors and Electrical Equipment issues account for 17.5% of MOT failures on the Caterham R400. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Frequently Asked Questions
What is the MOT pass rate for the Caterham R400?
Based on 126 MOT tests in our database, the Caterham R400 has an overall pass rate of 77.8% (22.2% fail rate).
What are the most common MOT failures on a Caterham R400?
The top 3 reasons a Caterham R400 fails its MOT are: 1. Suspension (23.8%), 2. Tyres (18.3%), 3. Lamps, Reflectors and Electrical Equipment (17.5%). Check these areas before booking your MOT.
Is the Caterham R400 reliable?
With a 22.2% MOT failure rate, the R400 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Caterham R400?
Based on failure data, focus on: Suspension (23.8%); Tyres (18.3%); Lamps, Reflectors and Electrical Equipment (17.5%). 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.