.JPG){kind=link}
MG
B GT
2,062 MOT tests analysed. sits above the UK fleet average — here's where B GTs pass, fail, and end up on the retest sheet.
That's 4.2 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
81.7%
Pass-after-fix
2.4%
Fail
14.7%
Avg miles
44,658
Pass + Pass-after-fix + Fail = 100%
Petrol cars registered before January 2006 are typically pre-Euro 4 — subject to daily charges in London ULEZ, Birmingham CAZ, and Glasgow LEZ. Bristol CAZ does not charge petrol cars. Daily charges if driven in the zone: London £12.50 · Birmingham £8.00 .
The picture
B Gt: above-average pass rates, with caveats
Across 1,607 MOT tests, the B Gt returns 80.2% first-time pass — above the UK fleet average. The single most-logged Major fail is a lamp out. Emissions levels exceed default limits and a missing steering gaiter round out the top three. Average tested mileage sits at 45,579, 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.
Filter failures:
Hide categories
Tick a category to hide it from rankings sitewide. Saved in this browser only.
- 01
Emissions levels exceed default limits
40 occurrences · 1.9% of tests
- 02
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
34 occurrences · 1.6% of tests
- 03
Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc
32 occurrences · 1.6% of tests
- 04
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
29 occurrences · 1.4% of tests
- 05
Brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle.
27 occurrences · 1.3% of tests
- 06
A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED
27 occurrences · 1.3% of tests
- 07
Parking brake efficiency below minimum requirement
26 occurrences · 1.3% of tests
- 08
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
26 occurrences · 1.3% of tests
- 09
Steering rack gaiter or ball joint dust cover damaged or deteriorated
26 occurrences · 1.3% of tests
- 10
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
26 occurrences · 1.3% 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.
Try the calculator
Build your own retest budget.
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 B GT?
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 B GT 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.