2014 MG MG6 — MOT failures & pass rate
The 2014 MG MG6 passed 73.9% of its 2,683 recorded MOT tests. That is 8.1 percentage points worse than all cars of a similar age, which fail at 18.0%. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
Lighting & signalling dominates the failure mix at 13.2% of all tests — 3.0 points clear of brakes, so it is the first thing to check.
At component level the recurring items are rigid brake pipes, headlamp and ball joint — rigid brake pipes alone was recorded 225 times.
A 120-150k example is materially riskier than a 0-30k one: 29.3% versus 19.0%.
Split by fuel, diesel examples fail 3.4pp more often than petrol ones (28.1% vs 24.8%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: brakes was flagged on 36.0% of tests without failing them.
The trend is worsening — 23.5% of tests failed in 2021 against 27.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 13.2% | 355 |
| 2 | Brakes | 10.2% | 274 |
| 3 | Suspension | 9.6% | 258 |
| 4 | Tyres | 9.1% | 244 |
| 5 | Visibility | 3.4% | 91 |
| 6 | Emissions & environmental | 1.9% | 50 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Rigid brake pipes | 225 |
| 2 | Headlamp | 148 |
| 3 | Ball joint | 138 |
| 4 | Headlamp aim | 133 |
| 5 | Tread depth | 116 |
| 6 | Linkage ball joints | 68 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 36.0% | 966 |
| 2 | Tyres | 29.2% | 783 |
| 3 | Suspension | 25.2% | 677 |
| 4 | Lighting & signalling | 10.1% | 270 |
| 5 | Other defects | 9.9% | 266 |
| 6 | Emissions & environmental | 4.4% | 119 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 226 | 19.0% |
| 30-60k | 1,071 | 23.9% |
| 60-90k | 1,025 | 30.2% |
| 90-120k | 308 | 24.3% |
| 120-150k | 41 | 29.3% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,659 | 24.8% |
| Diesel | 1,016 | 28.1% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 600 | 23.5% |
| 2022 | 591 | 24.0% |
| 2023 | 578 | 29.1% |
| 2024 | 500 | 27.2% |
| 2025 | 414 | 27.3% |
What to check before buying a 2014 MG6
On a 2014 MG6, lighting & signalling is what the MOT record says goes wrong most — it appeared in 13.2% of tests. Check these areas before you commit.
- Lighting & signalling (13.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (10.2% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Suspension (9.6% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2014 MG MG6s pass their MOT?
73.9% of the 2,683 2014 MG MG6 MOT tests in this dataset passed — a 26.1% fail rate.
What is the most common MOT failure on a 2014 MG MG6?
Lighting & signalling, recorded in 13.2% of tests, followed by brakes (10.2%).
Does the 2014 MG6 get worse with mileage?
Its MOT fail rate rises from 19.0% in the 0-30k band to 29.3% in the 120-150k band.
Methodology & source. Based on 2,683 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.