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MG
6
3,529 MOT tests analysed. runs below the UK fleet average — here's where 6s pass, fail, and end up on the retest sheet.
That's 8.1 points below the UK fleet average across our 1,984 tracked models — buyers should expect more first-time fails than the typical UK car.
Pass
69.4%
Pass-after-fix
4.8%
Fail
25.0%
Avg miles
72,964
Pass + Pass-after-fix + Fail = 100%
This model's production run straddles the January 2006 Euro 4 cutoff. Individual cars vary — check your registration plate on the government's ULEZ checker. Daily charges if driven in the zone: London £12.50 · Birmingham £8.00 .
The picture
6: a below-average pass rate worth digging into
Across 2,760 MOT tests, the 6 returns 67.4% first-time pass — well below the UK fleet average. The single most-logged Major fail is a corroded brake pipe. A number-plate lamp out and tyre tread under the limit round out the top three. Average tested mileage sits at 68,225, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.
ABI Insurance Group
Group 12–28
Below the fleet average — generally reasonable to insure. Lower groups cost less to insure; UK fleet average is around Group 22.
Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →
12–28
out of 50
Top ten reasons for rejection.
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- 01
Brake pipe damaged or excessively corroded
264 occurrences · 7.5% of tests
- 02
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
176 occurrences · 5.0% of tests
- 03
Tyre tread depth not in accordance with the requirements
93 occurrences · 2.6% of tests
- 04
A suspension pin, bush or joint excessively worn
88 occurrences · 2.5% of tests
- 05
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
86 occurrences · 2.4% of tests
- 06
a brake lining or pad worn below 1.5mm
82 occurrences · 2.3% of tests
- 07
A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED
81 occurrences · 2.3% of tests
- 08
A suspension pin, bush or joint excessively worn
74 occurrences · 2.1% of tests
- 09
Headlamp reflector or lens slightly defective
70 occurrences · 2.0% of tests
- 10
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
66 occurrences · 1.9% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 4 failures
£188–£460
If every one of this 6's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Build your own retest budget.
Tools that pre-empt a retest.
Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.
Item 01 · Amazon UK
H7 / W21W bulb pack
A spare-bulb kit lives in the boot. Test morning is not the time to find your stop-lamp's gone.
Search Amazon UK
Item 02 · Amazon UK
Digital tyre-tread depth gauge
Five quid for a gauge beats £150 for a retest. UK MOT minimum is 1.6mm — most testers fail anything below 2mm to be safe.
Search Amazon UK
My Motor World · affiliate
Parts & supplies for this fix
Affiliate links — small commission, no extra cost to you.
Summit
Summit ADRG-60 MG Replacement Stick-On Tinted Mirror Glass LHS
£7.69
View at My Motor World →
Autotek
Autotek Ford Nordic Blue 300ml
£14.29
View at My Motor World →
Motor World
Motor World MG Rover F 95-2002 Car Floor Mat Set
£32.99
View at My Motor World →
Motor World
Motor World Rover MGB Car Floor Mat Set
£32.99
View at My Motor World →
Click Mechanic · affiliate
Book a mobile mechanic
Affiliate links — small commission, no extra cost to you.
Mobile mechanic · UK-wide
Book a mechanic at your door.
Fixed-price quotes upfront. No garage needed. Click Mechanic sends a vetted local mechanic to you — home, work, or roadside.
Buying or keeping a 6?
Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a 6 and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.