Vauxhall Signum Exclusiv Cdti 16v MOT Pass Rate
Overall pass rate across all manufacture years, based on 66 real MOT test results. Failure rate: 48.5%.
Data from official DVSA MOT testing records
Vauxhall Signum Exclusiv Cdti 16v MOT Reliability Overview
The Vauxhall Signum Exclusiv Cdti 16v is a rare vehicle in the UK, with 66 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 51.5% and a failure rate of 48.5%, which is below the UK average of approximately 37%.
Based on this data, the Vauxhall Signum Exclusiv Cdti 16v earns a "Poor" reliability rating. The average Vauxhall Signum Exclusiv Cdti 16v presents for MOT with approximately 81,248 miles on the clock. The 2005 manufacture year performs best with a 47.1% pass rate.
The most common MOT failure for the Vauxhall Signum Exclusiv Cdti 16v is Suspension, affecting 43.9% 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 33.3%. Brakes rounds out the top three at 30.3%. 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 | Suspension | 48.5% | 32 |
| 2 | Tyres | 33.3% | 22 |
| 3 | Brakes | 31.8% | 21 |
| 4 | Lamps, Reflectors And Electrical Equipment | 24.2% | 16 |
| 5 | Steering | 18.2% | 12 |
| 6 | Exhaust, Fuel And Emissions | 9.1% | 6 |
| 7 | Registration Plates And Vin | 4.5% | 3 |
| 8 | Seat Belts And Supplementary Restraint Systems | 4.5% | 3 |
| 9 | Non-component Advisories | 1.5% | 1 |
| 10 | Body, Chassis, Structure | 1.5% | 1 |
| 11 | Identification Of The Vehicle | 1.5% | 1 |
| 12 | Road Wheels | 1.5% | 1 |
| 13 | Noise, Emissions And Leaks | 1.5% | 1 |
Failures per 10,000 Miles
avg. 81,248 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 |
|---|---|---|---|
| Suspension | 5.97 | 48.5% | 32 |
| Tyres | 4.10 | 33.3% | 22 |
| Brakes | 3.92 | 31.8% | 21 |
| Lamps & Electrical | 2.99 | 24.2% | 16 |
| Steering | 2.24 | 18.2% | 12 |
| Emissions & Exhaust | 1.12 | 9.1% | 6 |
| Registration Plates and VIN | 0.56 | 4.5% | 3 |
| Seat Belts | 0.56 | 4.5% | 3 |
| Non-component advisories | 0.19 | 1.5% | 1 |
| Body & Structure | 0.19 | 1.5% | 1 |
| Identification of the vehicle | 0.19 | 1.5% | 1 |
| Wheels | 0.19 | 1.5% | 1 |
| Noise, emissions and leaks | 0.19 | 1.5% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Vauxhall Signum Exclusiv Cdti 16v has 81,248 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 Vauxhall Signum Exclusiv Cdti 16v has a mileage-adjusted failure rate of 5.97% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Vauxhall Signum Exclusiv Cdti 16v MOT Data
The Vauxhall Signum Exclusiv Cdti 16v is a rare vehicle in the UK, with 66 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 51.5% and a failure rate of 48.5%, which is below the UK average of approximately 37%.
For Vauxhall Signum Exclusiv Cdti 16v owners, these results suggest above-average failure risk — thorough pre-MOT checks are recommended. 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 Signum Exclusiv Cdti 16v is likely to perform.
Suspension — 43.9% of failures
Suspension issues account for 43.9% of MOT failures on the Vauxhall Signum Exclusiv Cdti 16v. 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 — 33.3% of failures
Tyres issues account for 33.3% of MOT failures on the Vauxhall Signum Exclusiv Cdti 16v. 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.
Brakes — 30.3% of failures
Brakes issues account for 30.3% of MOT failures on the Vauxhall Signum Exclusiv Cdti 16v. 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 Vauxhall Signum Exclusiv Cdti 16v?
Based on 66 (based on limited data) MOT tests in our database, the Vauxhall Signum Exclusiv Cdti 16v has an overall pass rate of 51.5% (48.5% fail rate).
What are the most common MOT failures on a Vauxhall Signum Exclusiv Cdti 16v?
The top 3 reasons a Vauxhall Signum Exclusiv Cdti 16v fails its MOT are: 1. Suspension (43.9%), 2. Tyres (33.3%), 3. Brakes (30.3%). Check these areas before booking your MOT.
Is the Vauxhall Signum Exclusiv Cdti 16v reliable?
With a 48.5% MOT failure rate, the Signum Exclusiv Cdti 16v is less reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Vauxhall Signum Exclusiv Cdti 16v?
Based on failure data, focus on: Suspension (43.9%); Tyres (33.3%); Brakes (30.3%). 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.