1991 Morgan Plus 4 — MOT History by Age
How cars manufactured in 1991 perform at MOT as they age
Data from official DVSA MOT testing records
Insufficient data for same-age comparison.
How This Car Ages
Pass rate progression for the 1991 Morgan Plus 4 as it ages.
Bar chart showing pass rate by car age from 18 to 25 years
📊 View as table
| Age | Pass Rate | Tests |
|---|---|---|
| 18 yrs | 78.1% | 32 |
| 20 yrs | 69.7% | 33 |
| 22 yrs | 80.0% | 30 |
| 25 yrs | 64.5% | 31 |
Pass Rate Trend
How the 1991 Morgan Plus 4 pass rate changes as it ages, from first MOT to most recent.
Trend shows declining over 4 years
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| Built | Pass Rate | Tests |
|---|---|---|
| 2016 (25 yrs) | 64.5% | 31 |
| 2013 (22 yrs) | 80% | 30 |
| 2011 (20 yrs) | 69.7% | 33 |
| 2009 (18 yrs) | 78.1% | 32 |
Year-by-Year MOT Results
Common MOT Failures
Top failure categories across all test years for 1991 Morgan Plus 4, with age trends.
How Failures Change With Age
Comparing failure rates between the youngest and oldest test years.
| Category | At Youngest | At Oldest | Change | Trend |
|---|---|---|---|---|
| Brakes | 3.1% (18 yrs) | 29.0% (25 yrs) | +25.9%
| 🔴 ↑ |
| Lamps, Reflectors and Electrical Equipment | 12.5% (18 yrs) | 35.5% (25 yrs) | +23.0%
| 🔴 ↑ |
| Steering | 3.1% (18 yrs) | 16.1% (25 yrs) | +13.0%
| 🔴 ↑ |
| Driver's View of the Road | 3.1% (18 yrs) | 6.5% (25 yrs) | +3.4%
| 🔴 ↑ |
Other Manufacture Years
Looking for the best year to buy? See the full comparison on the Morgan Plus 4 page →
About This Data
This page shows how Morgan Plus 4 cars manufactured in 1991 perform at MOT as they age. Data spans from 2009 to 2016, covering 126 tests. Pass rates naturally decline with age as components wear.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.