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MG MG4 Common Problems, Faults & Repair Costs (2026)

Based on official DVSA MOT test data. View the most common MOT failure categories, pass rates, and estimated repair costs for the MG MG4 (2022–present).

MOT Pass Rate

90.5%8.5% above national avg (82%)

Reliability rating: Excellent — based on approx. 8,000 tests

Dangerous Defects

0.70%

Low risk

Retest Rate

7.0%

of failed tests need a retest

Top MOT Failure Categories

1

Lamps, reflectors and electrical equipment

Est. repair: £40–£200

10.0%
2

Suspension

Est. repair: £120–£450

7.8%
3

Brakes

Est. repair: £100–£350

7.2%
4

Tyres

Est. repair: £50–£120 per tyre

8.5%
5

Exhaust, fuel and emissions

Est. repair: £40–£200

1.8%

Where Faults Occur

26.0%

Front

24.0%

Rear

18.0%

Offside

Mileage Benchmarks

At 3 years

16,000 mi

At 5 years

N/A

At 10 years

N/A

Significantly higher or lower mileage than these benchmarks may indicate unusual usage patterns. Check the full MOT history for mileage consistency.

Is a MG MG4 a Good Buy?

The MG MG4 demonstrates above-average reliability based on MOT test data, with a 90.5% pass rate. This places it 8.5% above the national average, suggesting lower ongoing maintenance costs compared to many competitors.

While no car is without faults, lamps, reflectors and electrical equipment issues are the most common concern, affecting approximately 10.0% of failed tests. These tend to be relatively affordable to fix at £30–£150.

MG MG4 MOT Check & History

View detailed MOT pass rates by year, mileage benchmarks, and full test history data for the MG MG4.

View MG MG4 MOT Data

Check a Specific MG MG4

Enter a registration number to view the full MOT history for any MG MG4.

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Other MG Models

MG ZS

81.5%

Lamps, reflectors and electrical equipment →

MG ZS EV

88.5%

Lamps, reflectors and electrical equipment →

MG HS

82.8%

Lamps, reflectors and electrical equipment →

MG MG5 EV

89.2%

Lamps, reflectors and electrical equipment →

MG 3

80.2%

Lamps, reflectors and electrical equipment →

MG Cyberster

89.5%

Lamps, reflectors and electrical equipment →

View all MG models

Frequently Asked Questions

What are the most common MOT faults on a MG MG4?
The top MOT failure on the MG MG4 is Lamps, reflectors and electrical equipment, accounting for approximately 10.0% of all failures. Other common issues include suspension and brakes.
What is the MG MG4 MOT pass rate?
The MG MG4 has an estimated MOT pass rate of 90.5%, which is 8.5% above the national average of 82%. This rates the MG MG4 as "Excellent" for MOT reliability.
Is the MG MG4 reliable?
Based on DVSA MOT data, the MG MG4 has a excellent reliability record with a 90.5% pass rate. It has a dangerous defect rate of 0.70% and a retest rate of 7.0%.
How much does it cost to fix common MG MG4 MOT failures?
Typical repair costs for MG MG4 MOT failures range from £30–£200 for lamps, reflectors and electrical equipment issues to £120–£450 for suspension problems. Prices are estimates based on typical UK independent garage rates.
What mileage should a MG MG4 have?
Based on MOT test data, the average MG MG4 covers approximately 16,000 mi by 3 years, N/A by 5 years, and N/A by 10 years. Significantly higher or lower mileage may warrant closer inspection.
Should I buy a used MG MG4?
The MG MG4 is generally a solid choice based on MOT data. Check the full MOT history of any specific vehicle before purchasing, paying particular attention to lamps, reflectors and electrical equipment issues and mileage consistency.
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