1984 Mercedes Unclassified MOT Pass Rate
Pass rate for Unclassified models manufactured in 1984, based on 341 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Unclassified cars tested in 1984. Want to see how cars built in 1984 hold up over time?
View 1984 Mercedes Unclassified vintage page → (39.5% current pass rate)1984 Mercedes Unclassified MOT Analysis
The 1984 Mercedes Unclassified has an MOT pass rate of 46.9% based on 341 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 136,951 miles on the odometer. With a 53.1% failure rate, the 1984 Unclassified is rated as "Very Poor" for MOT reliability.
The leading cause of MOT failure for the 1984 Mercedes Unclassified is Body, chassis, structure, responsible for 0.9% of failures. 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 range from £100–500+. Lamps, reflectors and electrical equipment is the second most common issue at 0.9%. Visibility follows at 0.6%.
Top failures specific to 1984 models only. The overall Unclassified 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 | Body, Chassis, Structure | 0.9% | 3 |
| 2 | Lamps, Reflectors And Electrical Equipment | 0.9% | 3 |
| 3 | Visibility | 0.6% | 2 |
| 4 | Brakes | 0.6% | 2 |
| 5 | Tyres | 0.3% | 1 |
| 6 | Non-component Advisories | 0.3% | 1 |
Failures per 10,000 Miles
avg. 136,951 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 |
|---|---|---|---|
| Body & Structure | 0.06 | 0.9% | 3 |
| Lamps & Electrical | 0.06 | 0.9% | 3 |
| Visibility | 0.04 | 0.6% | 2 |
| Brakes | 0.04 | 0.6% | 2 |
| Tyres | 0.02 | 0.3% | 1 |
| Non-component advisories | 0.02 | 0.3% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1984 Mercedes Unclassified has an MOT pass rate of 46.9% based on 341 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 136,951 miles on the odometer. With a 53.1% failure rate, the 1984 Unclassified is rated as "Very Poor" for MOT reliability.
If you own or are considering buying a 1984 Mercedes Unclassified, be prepared for above-average maintenance costs. Before your MOT, pay particular attention to body, chassis, structure: 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. With an average mileage of 136,951 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Body, chassis, structure — 0.9% of failures
Body, chassis, structure issues account for 0.9% of MOT failures on 1984 Mercedes Unclassified 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.
Lamps, reflectors and electrical equipment — 0.9% of failures
Lamps, reflectors and electrical equipment issues account for 0.9% of MOT failures on 1984 Mercedes Unclassified models. 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.
Visibility — 0.6% of failures
Visibility issues account for 0.6% of MOT failures on 1984 Mercedes Unclassified 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.