3,071 tests in 2025
SsangYong Musso reliability and MOT pass rate
68.9% passed first time. The 31.1% fail rate is 8.5 points worse than the all-car average, on a median example 5 years old with 51,786 miles.
Pass rate
68.9%
22.6% of all cars failed; 31.1% of these did.
Fixed on the day
5%
Passed after a defect was put right during the visit.
Median at test
51,786 mi
5 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 1,722 | 29.5% |
| 6-9 years | 1,299 | 33.9% |
| 10-13 years | 0 | — |
| 14+ years | 29 | — |
What the Musso fails on
Share of failed tests with at least one fail item in each DVSA inspection section. A test can fail in several sections at once.
- Brakes358 dangerous62.4%
- Lamps, reflectors and electrical equipment4 dangerous37.4%
- Suspension17 dangerous24.7%
- Tyres110 dangerous11.8%
- Steering3 dangerous11.7%
- Visibility10.3%
- Noise, emissions and leaks6%
- Body, chassis, structure9 dangerous5.4%
Is the Musso getting worse?
The fail rate fell 0.7 points to 31.1% from 2022 to 2025 while the median one tested aged 1 year, which is about what ageing alone predicts (1.3 points). Read it as the fleet getting older rather than the model changing.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 1,464 | 4 | 31.8% | 22.5% | |
| 2023 | 1,858 | 4 | 33.5% | 22.8% | |
| 2024 | 2,042 | 5 | 31.5% | 23.2% | |
| 2025 | 3,067 | 5 | 31.1% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Musso at its test that year, and it is the number to watch: across the whole fleet each extra year of age adds roughly 1.9 points to the fail rate, so a model whose age and fail rate rise together is simply getting older.
The exact defects that fail it
Every failure item DVSA recorded against a Musso in 2025, counted by how many tests each one appeared on.
- 1Parking brake performance: inoperative on one side251 tests
- 2Rbt (sp): efficiency below requirements214 tests
- 3Rear fog lamp: not working156 tests
- 4Rbt (sp): efficiency less than 50% of the required value149 tests
- 5Brake pads: less than 1.5 mm thick127 tests
- 6Track rod end: ball joint has excessive play101 tests
- 7Coil spring: fractured or broken93 tests
- 8Ball joint: ball joint excessively worn90 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Musso collects 2.49 of them per test, and these are the ones that come up most. Treat it as the running-repairs list for the next year or two.
- 1Brake pads: less than 1.5 mm thick471 tests
- 2Tread depth: tread depth below requirements of 1.6mm431 tests
- 3Ball joint: ball joint excessively worn197 tests
- 4Brake discs: in such a condition that it is seriously weakened184 tests
- 5Rigid brake pipes: excessively corroded145 tests
- 6Coil spring: corroded so that its cross sectional area is reduced and seriously weakened126 tests
- 7Engine oil leaks: leaking excessively from engine117 tests
- 8Brake discs: significantly and obviously worn106 tests
Questions
What is the SsangYong Musso MOT pass rate?
68.9% of the 3,071 SsangYong Musso first-attempt MOTs in 2025 passed. The fail rate of 31.1% compares with 22.6% across all cars. A further 5% passed after a defect was fixed during the test visit.
What does a SsangYong Musso usually fail on?
The single most common failure is "Parking brake performance: inoperative on one side", recorded on 251 failed tests, followed by "Rbt (sp): efficiency below requirements" and "Rear fog lamp: not working". By section, brakes appears in 62.4% of failures, lamps, reflectors and electrical equipment appears in 37.4% of failures, suspension appears in 24.7% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 29.5%; at 6-9 years it was 33.9%. The median SsangYong Musso tested in 2025 was 5 years old with 51,786 miles.
Is the SsangYong Musso getting less reliable?
The fail rate fell 0.7 points to 31.1% from 2022 to 2025 while the median one tested aged 1 year, which is about what ageing alone predicts (1.3 points). Read it as the fleet getting older rather than the model changing.
First-attempt class 4 tests, 2025, from DVSA’s anonymised MOT data (OGL v3, retrieved 2026-09-12). DVSA records newer cars trim by trim; this page adds every Musso trim together. Year-on-year figures come from the same DVSA extracts for 2026 and earlier years. Full method on the pass rates hub.
Other SsangYong models
Checking a particular Musso?
The odds above are the model. The car in front of you has its own record: every test, every advisory, the mileage at each one.
Due a test? Find an approved MOT station near you.