1984 Mercedes Motorhome MOT Pass Rate
Pass rate for Motorhome models manufactured in 1984, based on 129 real MOT test results.
Data from official DVSA MOT testing records
1984 Mercedes Motorhome MOT Analysis
The 1984 Mercedes Motorhome has an MOT pass rate of 48.1% based on 129 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 144,988 miles on the odometer. With a 51.9% failure rate, the 1984 Motorhome is rated as "Very Poor" for MOT reliability.
The leading cause of MOT failure for the 1984 Mercedes Motorhome is Lamps, reflectors and electrical equipment, responsible for 3.1% of failures. 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 range from £5–50. Visibility is the second most common issue at 1.6%. Body, chassis, structure follows at 1.6%.
Top failures specific to 1984 models only. The overall Motorhome 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 | Lamps, Reflectors And Electrical Equipment | 3.1% | 4 |
| 2 | Visibility | 1.6% | 2 |
| 3 | Body, Chassis, Structure | 1.6% | 2 |
| 4 | Brakes | 1.6% | 2 |
| 5 | Suspension | 1.6% | 2 |
| 6 | Noise, Emissions And Leaks | 0.8% | 1 |
| 7 | Seat Belts And Supplementary Restraint Systems | 0.8% | 1 |
Failures per 10,000 Miles
avg. 144,988 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 |
|---|---|---|---|
| Lamps & Electrical | 0.21 | 3.1% | 4 |
| Visibility | 0.11 | 1.6% | 2 |
| Body & Structure | 0.11 | 1.6% | 2 |
| Brakes | 0.11 | 1.6% | 2 |
| Suspension | 0.11 | 1.6% | 2 |
| Noise, emissions and leaks | 0.05 | 0.8% | 1 |
| Seat Belts | 0.05 | 0.8% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1984 Mercedes Motorhome has an MOT pass rate of 48.1% based on 129 tests — significantly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 144,988 miles on the odometer. With a 51.9% failure rate, the 1984 Motorhome is rated as "Very Poor" for MOT reliability.
If you own or are considering buying a 1984 Mercedes Motorhome, be prepared for above-average maintenance costs. Before your MOT, pay particular attention to lamps, reflectors and electrical equipment: 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. With an average mileage of 144,988 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Lamps, reflectors and electrical equipment — 3.1% of failures
Lamps, reflectors and electrical equipment issues account for 3.1% of MOT failures on 1984 Mercedes Motorhome 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 — 1.6% of failures
Visibility issues account for 1.6% of MOT failures on 1984 Mercedes Motorhome 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 — 1.6% of failures
Body, chassis, structure issues account for 1.6% of MOT failures on 1984 Mercedes Motorhome 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.