Volvo 800 Series MOT Failures

An analysis of 23,935 real DVSA MOT tests on the Volvo 800 Series — what fails, how often, and how that compares to every other car on UK roads. Generations covered: 850 (1992–1997).

Where the Volvo 800 Series fails its MOT

The single biggest MOT failure point on the Volvo 800 Series is power steering fault — this model is 22 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 23,935 MOT tests, 5.16% of all Volvo 800 Series tests recorded this as a failure.

Steering faults include worn track rod ends, power steering leaks, and rack wear. These are safety-critical — any play in the steering should be investigated immediately.

Other notable weak points include headlight fault (73x the fleet average), brake hoses perished or damaged (18x the fleet average), subframe bushes or mounts worn (18x the fleet average), and emissions failure (28x the fleet average). These ratios compare the Volvo 800 Series'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: Steering, Lights & Electrics, Brakes, Suspension, Exhaust & Emissions. If you're inspecting a Volvo 800 Series 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 Volvo 800 Series'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 Volvo 800 Series specifically, the DVSA data shows the most common failures at this mileage are power steering fault (22x the average) and subframe bushes or mounts worn (18x). brake hoses perished or damaged (16x) and exhaust system damage (6.3x) 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 Volvo 800 Series specifically, the DVSA data shows the most common failures at this mileage are headlight fault (73x the average) and suspension component damaged or corroded (29x). emissions failure (20x) and power steering fault (16x) also appear frequently.

The shift from power steering fault at lower mileages to headlight fault 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 Volvo 800 Series specialists and owners flag most frequently, drawn from manufacturer technical bulletins, workshop data, and verified owner reports.

Flexible brake hose deterioration (850) Dangerous

The flexible brake hoses on 850 series models deteriorate at an exceptionally high rate compared to the fleet average. Affects 850; typical independent garage repair cost is £200–£350.

Power steering system failure (850) Major

The hydraulic power steering system on 850 series models fails at 22 times the fleet average rate according to MOT data. Affects 850; typical independent garage repair cost is £300–£600.

Front suspension bush and joint wear (850) Major

Front suspension components including bushes, pins, and joints wear at 17.6 times the fleet average on 850 series models. Affects 850; typical independent garage repair cost is £250–£500.

Emissions system failure - petrol engines (850) Major

Petrol engines in the 850 series show exceptionally high emissions failure rates on MOT testing. Affects 850; typical independent garage repair cost is £200–£800.

For the complete picture — including repair costs across independent, specialist, and dealer garages — see the full Volvo 800 Series common problems breakdown.

What to check before buying a Volvo 800 Series

Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Volvo 800 Series:

Steering — check for power steering fault. Lights & Electrics — check for headlight fault. Brakes — check for brake hoses perished or damaged, abs fault. Suspension — check for subframe bushes or mounts worn, axle or kingpin wear, suspension component damaged or corroded.

Beyond the MOT items, ask specifically about flexible brake hose deterioration and power steering system failure. These won't show up on a standard MOT but can be expensive to fix — repairs start from £200. 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.