MG Gs MOT pass rate: 78.6% (2,829 tests, 2025)

The MG Gs passed 78.6% of its 2,829 MOT tests in 2025 — 1.1 points above the UK average of 77.5%. The median tested example was 8 years old with 52,191 miles on the clock.

78.6%Pass rate (2025)

2,829MOT tests analysed

52,191 miMedian mileage at test

8 yrsMedian age at test

How the Gs compares

MG Gs

78.6%

UK average (all Class 4 vehicles)

77.5% across 33.1 million tests

MG average (all models)

84.9%

What fails most on the MG Gs

Across failed and rectified tests in 2025, these vehicle systems produced the most defects on the Gs:

#	System	Defects recorded	Share
1	Brakes	338	26.0%
2	Lamps, reflectors and electrical equipment	311	24.0%
3	Tyres	255	19.6%
4	Noise, emissions and leaks	101	7.8%
5	Visibility	78	6.0%
6	Seat belts and supplementary restraint systems	77	5.9%

Pre-MOT checklist for Gs owners

Based on the failure profile above, ten minutes with a torch before your test removes the most likely fail items:

Feel for a spongy pedal or pulling to one side; check pad wear through the wheel spokes if visible
Walk round with all lights on: one blown bulb is the most avoidable fail there is
Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory
A blowing exhaust or visible smoke will fail; warm the engine fully before the test
Replace smeared wiper blades and top up washer fluid — both are test items

Check the engine before the tester does

A stored fault code with the engine light on is an automatic Major defect. Scan and clear resolved faults before booking.

Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

Gs pass rate by registration year

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2016	1,688	80.8%	-0.5 pts	53,614
2017	2,784	80.1%	-3.9 pts	48,066
2018	2,855	82.6%	-3.7 pts	40,945

Check a specific Gs before you buy

Pass rates describe the model; they can’t tell you about the one car you’re looking at. Run its plate through our free MOT history check to see its personal record of failures, advisories and mileage readings.

Other MG models

378.5% pass rate · 19,553 tests ZS79.0% pass rate · 18,837 tests Hs Exclusive S-A92.5% pass rate · 10,003 tests 5 Exclusive90.2% pass rate · 9,518 tests ZS Exclusive EV87.7% pass rate · 9,445 tests ZS Exclusive Vti-Tech88.4% pass rate · 9,373 tests Tf73.7% pass rate · 8,549 tests Hs Exclusive90.9% pass rate · 8,098 tests

FAQs

What is the MOT pass rate for a MG Gs?

In 2025, 78.6% of 2,829 first MOT tests on the MG Gs were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the Gs fail its MOT on most?

The biggest defect group is brakes (26.0% of its recorded defects), followed by lamps, reflectors and electrical equipment.

Is the MG Gs reliable?

MOT pass rate is one lens on durability: at 78.6% it performs above the national average at a median age of 8 years and 52,191 miles. Always check the individual car's history too.

Source: DVSA Anonymised MOT tests and results, 2025 extract (Class 4 initial tests only; retests excluded). Contains public sector information licensed under the Open Government Licence v3.0. Figures rounded to one decimal place.