Is the Mg Zs reliable?

The Mg Zs has an average MOT pass rate of 79% across 11 years, based on 34,147 tests in 2024. That's 3 points below the national average of 82%. The most reliable year is 2020 with a 87% pass rate.

Which year Mg Zs is best?

The 2020 Mg Zs has the highest MOT pass rate at 87%, while the 2001 model has the lowest at 70%. There's a 17 percentage point spread between the best and worst years.

Mg Zs Running Costs, MOT Pass Rates & Reliability

Mg Zs

Reliability, running costs, and MOT data across 11 years from 34,147 real MOT tests.

Avg Pass Rate

79%

Total Tests

34,147

Best Year

2020 (87%)

Years Covered

How reliable is the Mg Zs?

vs national average-3% (82% avg)

vs Mg brand average-7% (86% avg)

Best to worst year spread17 percentage points

Reliability trendImproving over years

Mg Zs by Year

Year	Pass Rate	Tests	Avg Mileage
2021	83%	145	24,982 mi
2020	87%	7,930	27,667 mi
2019	86%	14,089	34,291 mi
2018	84%	8,982	41,978 mi
2017	84%	651	47,465 mi
2006	77%	102	80,223 mi
2005	78%	496	91,088 mi
2004	75%	644	89,991 mi
2003	72%	509	86,996 mi
2002	71%	463	94,493 mi
2001	70%	136	102,556 mi

Checking a specific Mg Zs?

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About the Mg Zs

The Mg Zs has been tested 34,147 times in 2024 MOT data across 11 model years (2001 to 2021), with an average pass rate of 79%. That's close to the national average of 82%. Available as petrol.

Best and Worst Years

The 2020 model is the most reliable with a 87% pass rate from 7,930 tests. The 2001 model has the lowest at 70%. With a 17 point spread, choosing the right year makes a big difference to reliability.

Reliability Trend

Newer MG ZSs show better MOT pass rates than older ones, with an average improvement of 10 percentage points.

Mileage Across Years

The oldest model in our data (2001) averages 102,556 miles, while the newest (2021) averages 24,982 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.

Compared to the Mg brand average of 86%, the Zs is 7 points lower, placing it among the less reliable Mg models.

Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.