2004 MG Zs — MOT History by Age

How cars manufactured in 2004 perform at MOT as they age

22 years

Current Age

68.4%

Latest Pass Rate

32,867

Total Tests (All Years)

87,604 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 20

This car: 68.4%

Average: 56.6%

✅ 11.8% above average (6824 models compared)

How This Car Ages

Pass rate progression for the 2004 MG Zs as it ages.

5 yrs67.4%

→ ↓4.1%

6 yrs63.3%

→ ↓3.0%

7 yrs60.3%

→ ↓3.9%

8 yrs56.4%

→ ↓5.5%

9 yrs50.9%

→ ↓0.4%

10 yrs50.5%

→ ↓0.6%

11 yrs49.9%

→ ↑1.1%

12 yrs51.0%

→ ↓1.0%

13 yrs50.0%

→ ↓0.0%

14 yrs50.0%

→ ↑2.9%

15 yrs52.9%

→ ↑3.9%

16 yrs56.8%

→ ↓0.5%

17 yrs56.3%

→ ↑6.0%

18 yrs62.3%

→ ↓0.6%

19 yrs61.7%

→ ↑6.7%

20 yrs68.4%

📊 View as table

Age	Pass Rate	Tests
5 yrs	67.4%	4,244
6 yrs	63.3%	4,052
7 yrs	60.3%	3,974
8 yrs	56.4%	3,760
9 yrs	50.9%	3,431
10 yrs	50.5%	2,993
11 yrs	49.9%	2,608
12 yrs	51.0%	2,135
13 yrs	50.0%	1,639
14 yrs	50.0%	870
15 yrs	52.9%	739
16 yrs	56.8%	560
17 yrs	56.3%	593
18 yrs	62.3%	416
19 yrs	61.7%	426
20 yrs	68.4%	427

Pass Rate Trend

How the 2004 MG Zs pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (20 yrs)	68.4%	427
2023 (19 yrs)	61.7%	426
2022 (18 yrs)	62.3%	416
2021 (17 yrs)	56.3%	593
2020 (16 yrs)	56.8%	560
2019 (15 yrs)	52.9%	739
2018 (14 yrs)	50%	870
2017 (13 yrs)	50%	1,639
2016 (12 yrs)	51%	2,135
2015 (11 yrs)	49.9%	2,608
2014 (10 yrs)	50.5%	2,993
2013 (9 yrs)	50.9%	3,431
2012 (8 yrs)	56.4%	3,760
2011 (7 yrs)	60.3%	3,974
2010 (6 yrs)	63.3%	4,052
2009 (5 yrs)	67.4%	4,244

Year-by-Year MOT Results

2009

67.4%

Age (yrs) 5Tests 4,244Avg Mileage 44,997Top Failure Lamps, Reflectors and Electrical Equipment — 19.2%

2010High Fail Rate

63.3%

Age (yrs) 6Tests 4,052Avg Mileage 52,405Top Failure Lamps, Reflectors and Electrical Equipment — 21.3%

2011High Fail Rate

60.3%

Age (yrs) 7Tests 3,974Avg Mileage 59,094Top Failure Lamps, Reflectors and Electrical Equipment — 22.7%

2012High Fail Rate

56.4%

Age (yrs) 8Tests 3,760Avg Mileage 65,186Top Failure Lamps, Reflectors and Electrical Equipment — 24.7%

2013High Fail Rate

50.9%

Age (yrs) 9Tests 3,431Avg Mileage 71,112Top Failure Brakes — 56.7%

2014High Fail Rate

50.5%

Age (yrs) 10Tests 2,993Avg Mileage 74,705Top Failure Brakes — 56.0%

2015High Fail Rate

49.9%

Age (yrs) 11Tests 2,608Avg Mileage 79,437Top Failure Brakes — 63.8%

2016High Fail Rate

51.0%

Age (yrs) 12Tests 2,135Avg Mileage 82,831Top Failure Brakes — 58.5%

2017High Fail Rate

50.0%

Age (yrs) 13Tests 1,639Avg Mileage 85,207Top Failure Brakes — 66.7%

2018High Fail Rate

50.0%

Age (yrs) 14Tests 870Avg Mileage 85,841Top Failure Brakes — 61.1%

2019High Fail Rate

52.9%

Age (yrs) 15Tests 739Avg Mileage 86,881Top Failure Brakes — 52.6%

2020High Fail Rate

56.8%

Age (yrs) 16Tests 560Avg Mileage 86,550Top Failure Brakes — 58.4%

2021High Fail Rate

56.3%

Age (yrs) 17Tests 593Avg Mileage 86,872Top Failure Brakes — 62.7%

2022High Fail Rate

62.3%

Age (yrs) 18Tests 416Avg Mileage 89,704Top Failure Suspension — 50.7%

2023High Fail Rate

61.7%

Age (yrs) 19Tests 426Avg Mileage 87,533Top Failure Brakes — 52.1%

2024

68.4%

Age (yrs) 20Tests 427Avg Mileage 87,604Top Failure Suspension — 44.5%

MOT results for 2004 MG Zs by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	5	67.4%	4,244	44,997	Lamps, Reflectors and Electrical Equipment — 19.2%
2010	6	63.3%	4,052	52,405	Lamps, Reflectors and Electrical Equipment — 21.3%
2011	7	60.3%	3,974	59,094	Lamps, Reflectors and Electrical Equipment — 22.7%
2012	8	56.4%	3,760	65,186	Lamps, Reflectors and Electrical Equipment — 24.7%
2013	9	50.9%	3,431	71,112	Brakes — 56.7%
2014	10	50.5%	2,993	74,705	Brakes — 56.0%
2015	11	49.9%	2,608	79,437	Brakes — 63.8%
2016	12	51.0%	2,135	82,831	Brakes — 58.5%
2017	13	50.0%	1,639	85,207	Brakes — 66.7%
2018	14	50.0%	870	85,841	Brakes — 61.1%
2019	15	52.9%	739	86,881	Brakes — 52.6%
2020	16	56.8%	560	86,550	Brakes — 58.4%
2021	17	56.3%	593	86,872	Brakes — 62.7%
2022	18	62.3%	416	89,704	Suspension — 50.7%
2023	19	61.7%	426	87,533	Brakes — 52.1%
2024	20	68.4%	427	87,604	Suspension — 44.5%

Common MOT Failures

Top failure categories across all test years for 2004 MG Zs, with age trends.

Brakes

45.9%

↑ Increases with age

Suspension

42.5%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

38.3%

↑ Increases with age

Lamps, reflectors and electrical equipment

36.3%

↓ Decreases with age

Body, chassis, structure

31.8%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	11.5% (5 yrs)	36.5% (20 yrs)	+25.0%	🔴 ↑
Tyres	14.1% (5 yrs)	20.6% (20 yrs)	+6.5%	🔴 ↑

Other Manufacture Years

2001 2002 2003 2004 2005 2006 2017 2018 2019 2020 2021

← Back to MG Zs overview

Looking for the best year to buy? See the full comparison on the MG Zs page →

About This Data

This page shows how MG Zs cars manufactured in 2004 perform at MOT as they age. Data spans from 2009 to 2024, covering 32,867 tests. Pass rates naturally decline with age as components wear.

Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.