MG 6
From 3,316 MOT tests. Average for its class.
Common MOT failure categories
Pass rate by registration year
Newer 6s fare better: 2016 models pass at 76% vs 64.9% for 2012.
Pass rate by fuel type
What goes wrong?
The most common MOT failure reasons are brake pipe damaged or excessively corroded, a suspension pin, bush or joint excessively worn and tyre tread depth not in accordance with the requirements. The top issue, brake pipe damaged or excessively corroded, caused 250 failures in 2024. Checking tread depth (1.6mm legal minimum, 3mm recommended) before your test can save an unnecessary fail. You can check prices at Black Circles if you need replacements. If you need repairs before retesting, sites like BookMyGarage let you compare local prices.
| brake pipe damaged or excessively corroded | 250 |
| a suspension pin, bush or joint excessively worn | 228 |
| tyre tread depth not in accordance with the requirements | 104 |
| the aim of a headlamp is not within limits laid down in the requirements | 87 |
| a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 85 |
| a headlamp or light source missing, inoperative or more than ½ not functioning in the case of led | 81 |
| a brake lining or pad worn below 1.5mm | 77 |
| a tyre seriously damaged | 77 |
| a rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources | 74 |
| a suspension component excessively damaged or corroded | 58 |
How serious are these failures?
Not all MOT failures are equal. 56.4% of 6 failures are safety items (worn brakes, tyre damage, steering play). The car still drives, but you shouldn't. Only 0% are the kind that would actually strand you. When it does fail, the average repair bill is around £112.
Fuel type matters
Diesel versions pass at 73.4% while Petrol versions pass at 67.4%, a 6 percentage point gap.
MG 6 on UK roads
The fleet is shrinking: 274 scrapped or exported in the past year, a net loss of 274. At this rate, roughly 5.9 years until none remain. Now at 61.8% of its peak (2,586 in 2017 Q3).
Quarterly breakdown
| Quarter | On road | SORN | New | Gone | Net |
|---|---|---|---|---|---|
| 2025 Q3 | 1,325 | 272 | +0 | -66 | -66 |
| 2025 Q2 | 1,404 | 259 | +0 | -66 | -66 |
| 2025 Q1 | 1,474 | 255 | +0 | -69 | -69 |
| 2024 Q4 | 1,567 | 231 | +0 | -73 | -73 |
| 2024 Q3 | 1,656 | 215 | +0 | -51 | -51 |
| 2024 Q2 | 1,714 | 208 | +0 | -74 | -74 |
| 2024 Q1 | 1,795 | 201 | +0 | -71 | -71 |
| 2023 Q4 | 1,879 | 188 | +0 | -31 | -31 |
7 variants on the road
| Variant | Fuel | Licensed | Share |
|---|---|---|---|
| 6 Tse Gt Turbo | Gas | 236 | 21% |
| 6 Se Gt Turbo | Petrol | 223 | 20% |
| 6 Tl Dti Tech | Diesel | 213 | 19% |
| 6 Ts Dti Tech | Diesel | 167 | 15% |
| 6 S Gt Turbo | Petrol | 122 | 11% |
| 6 Tse Gt Dti | Diesel | 93 | 8% |
| 6 Se Gt Dti | Diesel | 65 | 6% |
Source: DfT vehicle licensing statistics, 2025 Q3. Crown copyright, OGL v3.0.
By registration year
| Year | Pass rate | Top failures |
|---|---|---|
| 2016 | 76% | tyre tread depth not in accordance with the requirements, a brake lining or pad worn below 1.5mm |
| 2015 | 74% | brake pipe damaged or excessively corroded, tyre tread depth not in accordance with the requirements |
| 2014 | 70.3% | brake pipe damaged or excessively corroded, a suspension pin, bush or joint excessively worn |
| 2013 | 69.4% | brake pipe damaged or excessively corroded, a suspension pin, bush or joint excessively worn |
2 earlier years
| 2012 | 64.9% | brake pipe damaged or excessively corroded, a suspension pin, bush or joint excessively worn |
| 2011 | 63.7% | brake pipe damaged or excessively corroded, a suspension pin, bush or joint excessively worn |
Typical mileage
Half of all 6s tested had between 62,446 and 97,364 miles on the clock.
At 75,659 median miles, the 6 has 0.04 failures per 10,000 miles driven.
Other MG models
| MG Zs | 81.9% |
| MG 3 | 79.4% |
| MG Zs Exclusive Ev | 89.5% |
| MG Tf | 75% |
| MG Mgf | 72.8% |
Common questions
What is the MG 6 MOT pass rate?
The MG 6 has a 70.1% MOT pass rate based on 3,316 real MOT tests. This is around the national average.
What are common MOT failures on a MG 6?
The most common MOT failure on the MG 6 is brake pipe damaged or excessively corroded, which caused 250 failures. Other common issues include a suspension pin, bush or joint excessively worn.
How many MG 6s are on UK roads?
There are 1,325 MG 6s currently licensed on UK roads, with 272 on SORN.
What is the typical mileage of a MG 6 at MOT?
The median mileage at MOT for a MG 6 is 75,659 miles. The middle 50% of vehicles tested have between 62,446 and 97,364 miles.
Buying a used 6?
Start with the free tools. Look up the specific vehicle's MOT history on GOV.UK The mileage at each test will show if it's been wound back, and the advisory history tells you what's wearing. Cross-reference that against the typical failures above to see if anything looks unusual for this model.
The free data won't tell you about outstanding finance, theft markers, or write-off history. For that, you need a vehicle history check This is especially important on a private sale where you have fewer legal protections.
With a 70.1% pass rate and an average repair bill of £112 when things go wrong, budget accordingly.
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MOT data from DVSA anonymised test results, 2024 test year. Fleet data from DfT vehicle licensing statistics. Crown copyright, OGL v3.0. MOT pass rates are statistical summaries of test outcomes, not assessments of individual vehicle safety or condition. Always inspect a vehicle and check its full MOT history before purchasing. See terms of use.