1978 MG Bgt MOT Pass Rate
Pass rate for Bgt models manufactured in 1978, based on 1,186 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Bgt cars tested in 1978. Want to see how cars built in 1978 hold up over time?
View 1978 MG Bgt vintage page → (66.1% current pass rate)1978 MG Bgt MOT Analysis
The 1978 MG Bgt has an MOT pass rate of 62.2% based on 1,186 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 50,476 miles on the odometer. With a 37.8% failure rate, the 1978 Bgt is rated as "Average" for MOT reliability.
The leading cause of MOT failure for the 1978 MG Bgt is Tyres, responsible for 0.7% of failures. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs range from £50–200 per tyre. Road Wheels is the second most common issue at 0.3%. Lamps, reflectors and electrical equipment follows at 0.2%.
Top failures specific to 1978 models only. The overall Bgt 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 | Tyres | 0.7% | 8 |
| 2 | Road Wheels | 0.3% | 4 |
| 3 | Lamps, Reflectors And Electrical Equipment | 0.2% | 2 |
| 4 | Suspension | 0.2% | 2 |
| 5 | Brakes | 0.1% | 1 |
Failures per 10,000 Miles
avg. 50,476 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 |
|---|---|---|---|
| Tyres | 0.13 | 0.7% | 8 |
| Wheels | 0.07 | 0.3% | 4 |
| Lamps & Electrical | 0.03 | 0.2% | 2 |
| Suspension | 0.03 | 0.2% | 2 |
| Brakes | 0.02 | 0.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1978 MG Bgt has an MOT pass rate of 62.2% based on 1,186 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 50,476 miles on the odometer. With a 37.8% failure rate, the 1978 Bgt is rated as "Average" for MOT reliability.
If you own or are considering buying a 1978 MG Bgt, budget for potential repairs before each MOT. Before your MOT, pay particular attention to tyres: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating. At 50,476 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Tyres — 0.7% of failures
Tyres issues account for 0.7% of MOT failures on 1978 MG Bgt models. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Road Wheels — 0.3% of failures
Road Wheels issues account for 0.3% of MOT failures on 1978 MG Bgt models. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. Typical repair costs: £100–400 per wheel. Pre-MOT check: Visually inspect wheels for cracks, especially around the spokes and rim. Check that all wheel nuts are present and tightened. Look for signs of impact damage on alloy wheels.
Lamps, reflectors and electrical equipment — 0.2% of failures
Lamps, reflectors and electrical equipment issues account for 0.2% of MOT failures on 1978 MG Bgt 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.