2004 Alfa Romeo 166 — MOT History by Age

How cars manufactured in 2004 perform at MOT as they age

22 years

Current Age

75.6%

Latest Pass Rate

1,001

Total Tests (All Years)

106,093 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 20

This car: 75.6%

Average: 56.6%

✅ 19.0% above average (6824 models compared)

How This Car Ages

Pass rate progression for the 2004 Alfa Romeo 166 as it ages.

5 yrs59.4%

→ ↑3.0%

6 yrs62.4%

→ ↑2.5%

7 yrs64.9%

→ ↓11.0%

8 yrs53.9%

→ ↓10.7%

9 yrs43.2%

→ ↑3.4%

10 yrs46.6%

→ ↑1.9%

11 yrs48.5%

→ ↓1.6%

12 yrs46.9%

→ ↓4.0%

13 yrs42.9%

→ ↑15.9%

14 yrs58.8%

→ ↓6.5%

15 yrs52.3%

→ ↑13.6%

16 yrs65.9%

→ ↓21.5%

17 yrs44.4%

→ ↑5.6%

18 yrs50.0%

→ ↑23.0%

19 yrs73.0%

→ ↑2.6%

20 yrs75.6%

📊 View as table

Age	Pass Rate	Tests
5 yrs	59.4%	101
6 yrs	62.4%	93
7 yrs	64.9%	94
8 yrs	53.9%	89
9 yrs	43.2%	88
10 yrs	46.6%	73
11 yrs	48.5%	68
12 yrs	46.9%	64
13 yrs	42.9%	49
14 yrs	58.8%	34
15 yrs	52.3%	44
16 yrs	65.9%	41
17 yrs	44.4%	45
18 yrs	50.0%	36
19 yrs	73.0%	37
20 yrs	75.6%	45

Pass Rate Trend

How the 2004 Alfa Romeo 166 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (20 yrs)	75.6%	45
2023 (19 yrs)	73%	37
2022 (18 yrs)	50%	36
2021 (17 yrs)	44.4%	45
2020 (16 yrs)	65.9%	41
2019 (15 yrs)	52.3%	44
2018 (14 yrs)	58.8%	34
2017 (13 yrs)	42.9%	49
2016 (12 yrs)	46.9%	64
2015 (11 yrs)	48.5%	68
2014 (10 yrs)	46.6%	73
2013 (9 yrs)	43.2%	88
2012 (8 yrs)	53.9%	89
2011 (7 yrs)	64.9%	94
2010 (6 yrs)	62.4%	93
2009 (5 yrs)	59.4%	101

Year-by-Year MOT Results

2009High Fail Rate

59.4%

Age (yrs) 5Tests 101Avg Mileage 57,848Top Failure Brakes — 21.8%

2010High Fail Rate

62.4%

Age (yrs) 6Tests 93Avg Mileage 62,725Top Failure Lamps, Reflectors and Electrical Equipment — 25.8%

2011High Fail Rate

64.9%

Age (yrs) 7Tests 94Avg Mileage 73,296Top Failure Brakes — 18.1%

2012High Fail Rate

53.9%

Age (yrs) 8Tests 89Avg Mileage 77,155Top Failure Brakes — 28.1%

2013High Fail Rate

43.2%

Age (yrs) 9Tests 88Avg Mileage 82,454Top Failure Brakes — 69.3%

2014High Fail Rate

46.6%

Age (yrs) 10Tests 73Avg Mileage 84,328Top Failure Lamps, Reflectors and Electrical Equipment — 54.8%

2015High Fail Rate

48.5%

Age (yrs) 11Tests 68Avg Mileage 87,366Top Failure Brakes — 61.8%

2016High Fail Rate

46.9%

Age (yrs) 12Tests 64Avg Mileage 92,137Top Failure Brakes — 67.2%

2017High Fail Rate

42.9%

Age (yrs) 13Tests 49Avg Mileage 98,111Top Failure Brakes — 106.1%

2018High Fail Rate

58.8%

Age (yrs) 14Tests 34Avg Mileage 106,338Top Failure Brakes — 70.6%

2019High Fail Rate

52.3%

Age (yrs) 15Tests 44Avg Mileage 95,294Top Failure Brakes — 68.2%

2020

65.9%

Age (yrs) 16Tests 41Avg Mileage 102,413Top Failure Brakes — 63.4%

2021High Fail Rate

44.4%

Age (yrs) 17Tests 45Avg Mileage 98,758Top Failure Brakes — 111.1%

2022High Fail Rate

50.0%

Age (yrs) 18Tests 36Avg Mileage 106,581Top Failure Brakes — 94.4%

2023

73.0%

Age (yrs) 19Tests 37Avg Mileage 100,450Top Failure Brakes — 67.6%

2024

75.6%

Age (yrs) 20Tests 45Avg Mileage 106,093Top Failure Brakes — 60.0%

MOT results for 2004 Alfa Romeo 166 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	5	59.4%	101	57,848	Brakes — 21.8%
2010	6	62.4%	93	62,725	Lamps, Reflectors and Electrical Equipment — 25.8%
2011	7	64.9%	94	73,296	Brakes — 18.1%
2012	8	53.9%	89	77,155	Brakes — 28.1%
2013	9	43.2%	88	82,454	Brakes — 69.3%
2014	10	46.6%	73	84,328	Lamps, Reflectors and Electrical Equipment — 54.8%
2015	11	48.5%	68	87,366	Brakes — 61.8%
2016	12	46.9%	64	92,137	Brakes — 67.2%
2017	13	42.9%	49	98,111	Brakes — 106.1%
2018	14	58.8%	34	106,338	Brakes — 70.6%
2019	15	52.3%	44	95,294	Brakes — 68.2%
2020	16	65.9%	41	102,413	Brakes — 63.4%
2021	17	44.4%	45	98,758	Brakes — 111.1%
2022	18	50.0%	36	106,581	Brakes — 94.4%
2023	19	73.0%	37	100,450	Brakes — 67.6%
2024	20	75.6%	45	106,093	Brakes — 60.0%

Common MOT Failures

Top failure categories across all test years for 2004 Alfa Romeo 166, with age trends.

Brakes

60.1%

↑ Increases with age

Suspension

39.1%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

37.8%

↑ Increases with age

Lamps, reflectors and electrical equipment

33.5%

↑ Increases with age

Tyres

26.5%

↓ Decreases with age

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	21.8% (5 yrs)	60.0% (20 yrs)	+38.2%	🔴 ↑
Suspension	12.9% (5 yrs)	51.1% (20 yrs)	+38.2%	🔴 ↑
Tyres	19.8% (5 yrs)	11.1% (20 yrs)	-8.7%	🟢 ↓

Other Manufacture Years

1999 2000 2001 2002 2003 2004 2005

← Back to Alfa Romeo 166 overview

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About This Data

This page shows how Alfa Romeo 166 cars manufactured in 2004 perform at MOT as they age. Data spans from 2009 to 2024, covering 1,001 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.