Audi Cabriolet MOT Failures

An analysis of 12,519 real DVSA MOT tests on the Audi Cabriolet — what fails, how often, and how that compares to every other car on UK roads. Generations covered: B3 (1991–1998), B4 (1998–2001).

Where the Audi Cabriolet fails its MOT

The single biggest MOT failure point on the Audi Cabriolet is brake hoses perished or damaged — this model is 28 times more likely to fail on this item than the average car on UK roads. That makes it a significant weak point for anyone buying or owning this model. Across 12,519 MOT tests, 16.13% of all Audi Cabriolet tests recorded this as a failure.

Brake failures on the MOT range from worn pads and discs (routine maintenance) to corroded brake lines and seized calipers (more serious). Check for any pulling under braking and listen for grinding.

Other notable weak points include wheel bearings worn (23x the fleet average), suspension pin, bush or joint worn (17x the fleet average), emissions failure (20x the fleet average), and electrical wiring fault (13x the fleet average). These ratios compare the Audi Cabriolet's failure rate on each item against the national average for all cars tested — a ratio of 10x means this model fails ten times more often than a typical car.

The failures span 5 categories: Brakes, Suspension, Exhaust & Emissions, Lights & Electrics, Bodywork. If you're inspecting a Audi Cabriolet before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.

How failures change with mileage

The Audi Cabriolet's weak points shift as the car covers more miles. Understanding these patterns helps you know what to expect — and what to budget for — at each stage of ownership.

60,000 to 100,000 miles

This is where routine wear items start to show up. Brake components, tyres, and exhaust parts have done serious work by this point. Cars that have been well serviced will show fewer of these failures — this mileage band is where good maintenance really separates the well-kept from the neglected.

For the Audi Cabriolet specifically, the DVSA data shows the most common failures at this mileage are brake hoses perished or damaged (28x the average) and wheel bearings worn (23x). emissions failure (18x) and suspension pin, bush or joint worn (17x) also appear frequently.

Over 100,000 miles

High-mileage cars accumulate failures across multiple systems. The key question isn't whether things will need doing — they will — but whether the car has been maintained well enough to keep on top of them. Look for a consistent service history and recent MOT passes with minimal advisories.

For the Audi Cabriolet specifically, the DVSA data shows the most common failures at this mileage are stop lamp with a multiple light source up to 1/... (23x the average) and emissions failure (18x). suspension component damaged or corroded (17x) and suspension pin, bush or joint worn (16x) also appear frequently.

The shift from brake hoses perished or damaged at lower mileages to stop lamp with a multiple light source up to 1/... at higher mileages is typical — early failures tend to be design or factory-related, while high-mileage failures reflect accumulated mechanical wear. A car that's been well maintained will usually dodge the worst of both.

Known issues beyond the MOT

An MOT only tests roadworthiness at a single point in time — it won't catch developing faults, intermittent problems, or issues that haven't yet reached the failure threshold. These are the issues that Audi Cabriolet specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.

Flexible brake hose deterioration Dangerous

The flexible brake hoses connecting the rigid brake lines to the brake calipers are prone to internal deterioration and external damage on this model. Affects B3, B4; typical independent garage repair cost is £150–£250.

Wheel bearing excessive play Dangerous

Front and rear wheel bearings develop excessive play significantly more often than the fleet average on this model. Affects B3, B4; typical independent garage repair cost is £120–£200.

Suspension component corrosion (2.6 V6) Dangerous

The 2.6 V6 variants show significantly higher rates of suspension component corrosion compared to other engines and the fleet average. Affects B3, B4; typical independent garage repair cost is £200–£500.

Excessive emissions levels (2.6 V6) Major

The 2.6 V6 engine develops emissions problems that cause MOT failures at a rate 20 times higher than the fleet average on high-mileage examples. Affects B3, B4; typical independent garage repair cost is £300–£800.

For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Audi Cabriolet common problems breakdown.

What to check before buying a Audi Cabriolet

Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Audi Cabriolet:

Brakes — check for brake hoses perished or damaged. Suspension — check for wheel bearings worn, suspension pin, bush or joint worn, suspension component damaged or corroded. Exhaust & Emissions — check for emissions failure.

Beyond the MOT items, ask specifically about flexible brake hose deterioration and wheel bearing excessive play. These won't show up on a standard MOT but can be expensive to fix — repairs start from £150. A specialist pre-purchase inspection is worth the investment on this model.

Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. And verify the service history to confirm maintenance has been kept up to schedule. Enter any reg into our free car check to see the complete picture.

MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.