MOT reliability

Mg 3

Q: Is the Mg 3 reliable?

Across 20,687 Mg 3 vehicles in our MOT data, 81% pass the MOT (a 19% failure rate), with about 1.5 faults or advisories recorded per test.

Q: What is the average mileage of a Mg 3?

The typical Mg 3 in our data has covered around 45,426 miles.

20,687 vehicles · 146,387 completed MOT tests analysed

81%

MOT pass rate

Based on 20,687 Mg 3 vehicles and 146,387 completed MOT tests, the Mg 3 has an overall 81% pass rate, with an average recorded mileage of 45,426 miles.

20,687

Vehicles

146,387

MOT tests

5,842

Avg miles / year

1.5

Faults per test

Dangerous-fault share

Mg 3 problem areas

Where faults occur most across all Mg 3 MOT tests:

Tyres, wheels & suspension51%
Brakes22%
Other14%
Lamps & electrical6%
Visibility5%
Emissions & nuisance2%
Seatbelts & equipment2%
Steering1%

Mg 3 pass rate by age

How the Mg 3's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)	Tests	Pass rate
1	10	90%
2	734	89%
3	24,430	86%
4	23,063	85%
5	22,352	83%
6	21,403	80%
7	18,165	79%
8	14,324	77%
9	10,763	76%
10	6,807	74%
11	3,328	74%
12	932	73%
13	55	64%

Fuel types: Petrol (20,686), Gas Bi-Fuel (1)

Most common Mg 3 MOT faults

These are the faults and advisories recorded most often across Mg 3 MOT tests:

Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (7,186 times)
Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (7,034 times)
Front Brake pad(s) wearing thin (1.1.13 (a) (ii)) (6,218 times)
Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (4,719 times)
Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (4,649 times)
Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (4,201 times)
Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (3,570 times)
Front Sub-frame corroded but not seriously weakened (5.3.3 (b) (i)) (3,491 times)
Offside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i)) (3,142 times)
Nearside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i)) (3,116 times)
Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (2,723 times)
Nearside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (2,403 times)
Supplementary restraint system warning lamp indicates a fault (7.1.6 (a)) (2,380 times)
Offside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (2,323 times)
Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c)) (2,203 times)

Mg 3 pass rate by registration year

Year	Vehicles	Tests	Pass rate	Avg mileage
2023	353	431	84%	20,132
2022	1,193	2,120	86%	25,133
2021	722	2,164	84%	28,231
2020	1,699	7,097	84%	32,076
2019	3,659	19,609	83%	37,183
2018	2,575	17,077	82%	43,517
2017	2,925	23,361	81%	50,284
2016	3,174	28,182	81%	53,885
2015	2,513	25,236	79%	58,432
2014	1,727	19,334	79%	62,586
2013	146	1,755	78%	68,517
1972	1	21	90%	56,088

Mg 3 reliability FAQ

Across 20,687 Mg 3 vehicles in our MOT data, 81% pass the MOT (a 19% failure rate), with about 1.5 faults or advisories recorded per test.

The most frequently recorded Mg 3 MOT issues are: Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)); Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)); Front Brake pad(s) wearing thin (1.1.13 (a) (ii)).

The typical Mg 3 in our data has covered around 45,426 miles.

Compare the Mg 3

See how the Mg 3 stacks up against other Mg models on MOT reliability:

3 vs Metro 3 vs B gt 3 vs Mgf 3 vs Zs

Check a specific Mg 3

Enter a registration to see that exact vehicle's full MOT history, advisories and recurring faults.

See all Mg models · Learn about common MOT failures · what an MOT checks