1978 Citroen Dyane MOT Pass Rate
Pass rate for Dyane models manufactured in 1978, based on 39 real MOT test results.
Data from official DVSA MOT testing records
1978 Citroen Dyane MOT Analysis
The 1978 Citroen Dyane has an MOT pass rate of 64.1% based on 39 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 62,032 miles on the odometer. With a 35.9% failure rate, the 1978 Dyane is rated as "Average" for MOT reliability.
The leading cause of MOT failure for the 1978 Citroen Dyane is Body, chassis, structure, responsible for 15.4% 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+. Suspension is the second most common issue at 12.8%. Noise, emissions and leaks follows at 7.7%.
Top failures specific to 1978 models only. The overall Dyane 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 | 15.4% | 6 |
| 2 | Suspension | 12.8% | 5 |
| 3 | Noise, Emissions And Leaks | 7.7% | 3 |
| 4 | Brakes | 5.1% | 2 |
| 5 | Tyres | 5.1% | 2 |
| 6 | Lamps, Reflectors And Electrical Equipment | 5.1% | 2 |
| 7 | Visibility | 2.6% | 1 |
| 8 | Identification Of The Vehicle | 2.6% | 1 |
| 9 | Non-component Advisories | 2.6% | 1 |
| 10 | Steering | 2.6% | 1 |
Failures per 10,000 Miles
avg. 62,032 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.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Body & Structure | 2.48 | 15.4% | 6 |
| Suspension | 2.07 | 12.8% | 5 |
| Noise, emissions and leaks | 1.24 | 7.7% | 3 |
| Brakes | 0.83 | 5.1% | 2 |
| Tyres | 0.83 | 5.1% | 2 |
| Lamps & Electrical | 0.83 | 5.1% | 2 |
| Visibility | 0.41 | 2.6% | 1 |
| Identification of the vehicle | 0.41 | 2.6% | 1 |
| Non-component advisories | 0.41 | 2.6% | 1 |
| Steering | 0.41 | 2.6% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1978 Citroen Dyane has an MOT pass rate of 64.1% based on 39 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 62,032 miles on the odometer. With a 35.9% failure rate, the 1978 Dyane is rated as "Average" for MOT reliability.
If you own or are considering buying a 1978 Citroen Dyane, budget for potential repairs before each MOT. 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. At 62,032 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Body, chassis, structure — 15.4% of failures
Body, chassis, structure issues account for 15.4% of MOT failures on 1978 Citroen Dyane 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.
Suspension — 12.8% of failures
Suspension issues account for 12.8% of MOT failures on 1978 Citroen Dyane models. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Noise, emissions and leaks — 7.7% of failures
Noise, emissions and leaks issues account for 7.7% of MOT failures on 1978 Citroen Dyane models. Emissions failures occur when exhaust gases exceed legal limits for carbon monoxide (CO), hydrocarbons (HC), or particulate matter (diesel). Common causes include faulty oxygen sensors, clogged catalytic converters, or DPF issues on diesel vehicles. Typical repair costs: £100–1,000+. Pre-MOT check: If the engine management light is on, get it diagnosed before the MOT. For diesel cars, ensure the DPF has completed a regeneration cycle. Regular servicing and using premium fuel before the test can help.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.