What year MG 3 is most reliable?

Based on MOT first-test pass rates, the 2022 MG 3 has the highest pass rate at 91.2%, out of 1,197 vehicles tested.

What are the most common MG 3 MOT failures?

The most common MG 3 MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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MG 3 — Reliability by Year

20,190 vehicles · MOT data 2013–2022 · first-test pass rates

This page shows MOT first-test pass rates for each year the MG 3 was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2022

91.2% pass rate · 1,197 vehicles

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Lowest pass rate year

2013

79.4% pass rate · 146 vehicles

Year	Pass rate	Avg mileage	Vehicles
2022	91.2%	20,373 mi	1,197
2021	88.5%	21,169 mi	717
2020	87.3%	21,109 mi	1,689
2019	86.4%	23,853 mi	3,636
2018	84.5%	28,034 mi	2,553
2017	83.8%	32,103 mi	2,901
2016	82.9%	34,619 mi	3,149
2015	81.3%	36,652 mi	2,490
2014	80.8%	39,375 mi	1,712
2013	79.4%	39,155 mi	146

Which year MG 3 is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests. Green = noticeably above average for this model; red = noticeably below average.

Tests range from an average of 20,373 miles (newest year) to 39,375 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a MG 3.

See the buying guide →

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