Morgan Plus Four Reliability, MOT Pass Rate & Common Faults
Free Morgan Plus Four car check
Is the Morgan Plus Four reliable? We analysed 2,073 real MOT tests across 318 vehicles to find out.
Got a specific Morgan Plus Four? Enter the reg for a free check:
The Morgan Plus Four is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Morgan Plus Four.
Morgan Plus Four Number Plates
Number plates registered to a Morgan Plus Four. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Morgan Plus Four MOT Pass Rate by Year
How likely is a Morgan Plus Four to pass its MOT? Here's the pass rate for each registration year, newest first.
Morgan Plus Four Problems — What Goes Wrong?
The most common reasons a Morgan Plus Four fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Morgan Plus Four Common Faults & Problems
These are the most common serious faults found on Morgan Plus Four models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Morgan Plus Four Mileage — What's Normal?
How many miles does a typical Morgan Plus Four owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Morgan Plus Four MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Morgan Plus Four year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2022 | 127 | 87.4% | 3,940 | 6,949 | 16,158 |
| 2021 | 172 | 89.0% | 3,446 | 7,530 | 14,447 |
| 2020 | 85 | 88.2% | 4,605 | 10,544 | 17,557 |
| 2012 | 212 | 84.4% | 8,292 | 12,720 | 19,083 |
| 2011 | 547 | 88.5% | 7,252 | 13,644 | 21,892 |
| 2010 | 330 | 85.5% | 5,954 | 14,098 | 22,202 |
| 2009 | 168 | 85.1% | 11,247 | 17,195 | 24,826 |
| 1999 | 87 | 80.5% | 5,308 | 19,794 | 41,075 |
How Long Does a Morgan Plus Four Last?
Based on 318 Morgan Plus Four vehicles on UK roads.
Morgan Plus Four Mileage Distribution
Total mileage recorded across all Morgan Plus Four MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Morgan Plus Four
Based on MOT pass rates across all registration years with sufficient test data.
89.0% MOT pass rate from 172 tests
80.5% MOT pass rate from 87 tests
The best year to buy a used Morgan Plus Four is 2021, which has the highest MOT pass rate at 89.0% across 172 tests. The 1999 model year has the lowest pass rate at 80.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Morgan Plus Four Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Morgan Plus Four THIS CAR | 87.4% | 2,073 | 13,495 mi | 27 yrs |
| Morgan 4/4 | 84.6% | 54,616 | 25,048 mi | 58 yrs |
| Morgan Plus 4 | 85.6% | 23,769 | 17,689 mi | 72 yrs |
| Morgan Plus 8 | 85.5% | 22,733 | 26,389 mi | 57 yrs |
| Honda VF750F | 79.4% | 2,310 | 32,126 mi | 43 yrs |
Compared to the Morgan 4/4 (84.6% pass rate) and the Morgan Plus 4 (85.6% pass rate), the Morgan Plus Four outperforms both on MOT reliability.
Found a Morgan Plus Four you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Morgan Plus FourShould you buy a used Morgan Plus Four?
The Morgan Plus Four has an overall MOT pass rate of 87.4% across 2,073 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common failure point is exhaust emissions carbon monoxide content after 2nd fast idle excessive with 6 recorded occurrences. Check for this on any test drive or pre-purchase inspection.
On the safety side, the most frequently flagged dangerous fault is parking brake efficiency less than 50% of the required value. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Morgan Plus Four with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Morgan Plus Four owner drives around 975 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Morgan Plus Four models stay on UK roads for around 27 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.