1987 Mercedes 814 MOT Pass Rate
Pass rate for 814 models manufactured in 1987, based on 38 real MOT test results.
Data from official DVSA MOT testing records
1987 Mercedes 814 MOT Analysis
The 1987 Mercedes 814 has an MOT pass rate of 47.4% based on 38 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 173,691 miles on the odometer. With a 52.6% failure rate, the 1987 814 is rated as "Very Poor" for MOT reliability.
The leading cause of MOT failure for the 1987 Mercedes 814 is Visibility, responsible for 2.6% of failures. Visibility failures relate to the windscreen, wipers, washers, mirrors, and view-obstructing damage. Cracks in the windscreen swept area, ineffective wipers, or empty washer bottles are common causes. Typical repair costs range from £10–300. Body, chassis, structure is the second most common issue at 2.6%. Brakes follows at 2.6%.
Top failures specific to 1987 models only. The overall 814 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Visibility | 2.6% | 1 |
| 2 | Body, Chassis, Structure | 2.6% | 1 |
| 3 | Brakes | 2.6% | 1 |
| 4 | Lamps, Reflectors And Electrical Equipment | 2.6% | 1 |
| 5 | Tyres | 2.6% | 1 |
Failures per 10,000 Miles
avg. 173,691 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 |
|---|---|---|---|
| Visibility | 0.15 | 2.6% | 1 |
| Body & Structure | 0.15 | 2.6% | 1 |
| Brakes | 0.15 | 2.6% | 1 |
| Lamps & Electrical | 0.15 | 2.6% | 1 |
| Tyres | 0.15 | 2.6% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1987 Mercedes 814 has an MOT pass rate of 47.4% based on 38 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 173,691 miles on the odometer. With a 52.6% failure rate, the 1987 814 is rated as "Very Poor" for MOT reliability.
If you own or are considering buying a 1987 Mercedes 814, be prepared for above-average maintenance costs. Before your MOT, pay particular attention to visibility: Check the windscreen for chips and cracks — damage larger than 10mm in the driver's swept area or 40mm elsewhere will fail. Test washers and wipers. Ensure both door mirrors are intact and adjustable. With an average mileage of 173,691 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Visibility — 2.6% of failures
Visibility issues account for 2.6% of MOT failures on 1987 Mercedes 814 models. Visibility failures relate to the windscreen, wipers, washers, mirrors, and view-obstructing damage. Cracks in the windscreen swept area, ineffective wipers, or empty washer bottles are common causes. Typical repair costs: £10–300. Pre-MOT check: Check the windscreen for chips and cracks — damage larger than 10mm in the driver's swept area or 40mm elsewhere will fail. Test washers and wipers. Ensure both door mirrors are intact and adjustable.
Body, chassis, structure — 2.6% of failures
Body, chassis, structure issues account for 2.6% of MOT failures on 1987 Mercedes 814 models. 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.
Brakes — 2.6% of failures
Brakes issues account for 2.6% of MOT failures on 1987 Mercedes 814 models. 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).
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.