1984 Ford Sierra — MOT History by Age

How cars manufactured in 1984 perform at MOT as they age

42 years

Current Age

93.3%

Latest Pass Rate

2,810

Total Tests (All Years)

43,052 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Insufficient data for same-age comparison.

How This Car Ages

Pass rate progression for the 1984 Ford Sierra as it ages.

25 yrs63.4%

→ ↑1.0%

26 yrs64.4%

→ ↑1.1%

27 yrs65.5%

→ ↑1.5%

28 yrs67.0%

→ ↑4.0%

29 yrs71.0%

→ ↑1.5%

30 yrs72.5%

→ ↓3.4%

31 yrs69.1%

→ ↑7.9%

32 yrs77.0%

→ ↑2.8%

33 yrs79.8%

→ ↑0.6%

34 yrs80.4%

→ ↑2.5%

35 yrs82.9%

→ ↓1.9%

36 yrs81.0%

→ ↑2.1%

37 yrs83.1%

→ ↓1.8%

38 yrs81.3%

→ ↓1.2%

39 yrs80.1%

→ ↑13.2%

40 yrs93.3%

📊 View as table

Age	Pass Rate	Tests
25 yrs	63.4%	268
26 yrs	64.4%	239
27 yrs	65.5%	220
28 yrs	67.0%	203
29 yrs	71.0%	193
30 yrs	72.5%	178
31 yrs	69.1%	162
32 yrs	77.0%	174
33 yrs	79.8%	168
34 yrs	80.4%	138
35 yrs	82.9%	140
36 yrs	81.0%	105
37 yrs	83.1%	136
38 yrs	81.3%	107
39 yrs	80.1%	141
40 yrs	93.3%	238

Pass Rate Trend

How the 1984 Ford Sierra pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (40 yrs)	93.3%	238
2023 (39 yrs)	80.1%	141
2022 (38 yrs)	81.3%	107
2021 (37 yrs)	83.1%	136
2020 (36 yrs)	81%	105
2019 (35 yrs)	82.9%	140
2018 (34 yrs)	80.4%	138
2017 (33 yrs)	79.8%	168
2016 (32 yrs)	77%	174
2015 (31 yrs)	69.1%	162
2014 (30 yrs)	72.5%	178
2013 (29 yrs)	71%	193
2012 (28 yrs)	67%	203
2011 (27 yrs)	65.5%	220
2010 (26 yrs)	64.4%	239
2009 (25 yrs)	63.4%	268

Year-by-Year MOT Results

2009High Fail Rate

63.4%

Age (yrs) 25Tests 268Avg Mileage 48,958Top Failure Lamps, Reflectors and Electrical Equipment — 20.1%

2010High Fail Rate

64.4%

Age (yrs) 26Tests 239Avg Mileage 50,241Top Failure Lamps, Reflectors and Electrical Equipment — 23.0%

2011

65.5%

Age (yrs) 27Tests 220Avg Mileage 48,573Top Failure Lamps, Reflectors and Electrical Equipment — 23.6%

2012

67.0%

Age (yrs) 28Tests 203Avg Mileage 48,750Top Failure Lamps, Reflectors and Electrical Equipment — 19.2%

2013

71.0%

Age (yrs) 29Tests 193Avg Mileage 49,310Top Failure Brakes — 39.4%

2014

72.5%

Age (yrs) 30Tests 178Avg Mileage 48,130Top Failure Lamps, Reflectors and Electrical Equipment — 40.4%

2015

69.1%

Age (yrs) 31Tests 162Avg Mileage 44,247Top Failure Lamps, Reflectors and Electrical Equipment — 44.4%

2016

77.0%

Age (yrs) 32Tests 174Avg Mileage 49,622Top Failure Lamps, Reflectors and Electrical Equipment — 29.3%

2017

79.8%

Age (yrs) 33Tests 168Avg Mileage 47,146Top Failure Lamps, Reflectors and Electrical Equipment — 30.4%

2018

80.4%

Age (yrs) 34Tests 138Avg Mileage 41,014Top Failure Lamps, reflectors and electrical equipment — 29.0%

2019

82.9%

Age (yrs) 35Tests 140Avg Mileage 44,106Top Failure Lamps, reflectors and electrical equipment — 25.7%

2020

81.0%

Age (yrs) 36Tests 105Avg Mileage 47,798Top Failure Suspension — 21.0%

2021

83.1%

Age (yrs) 37Tests 136Avg Mileage 46,021Top Failure Lamps, reflectors and electrical equipment — 13.2%

2022

81.3%

Age (yrs) 38Tests 107Avg Mileage 45,316Top Failure Suspension — 16.8%

2023

80.1%

Age (yrs) 39Tests 141Avg Mileage 46,436Top Failure Lamps, reflectors and electrical equipment — 22.7%

2024

93.3%

Age (yrs) 40Tests 238Avg Mileage 43,052Top Failure Lamps, reflectors and electrical equipment — 9.2%

MOT results for 1984 Ford Sierra by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	25	63.4%	268	48,958	Lamps, Reflectors and Electrical Equipment — 20.1%
2010	26	64.4%	239	50,241	Lamps, Reflectors and Electrical Equipment — 23.0%
2011	27	65.5%	220	48,573	Lamps, Reflectors and Electrical Equipment — 23.6%
2012	28	67.0%	203	48,750	Lamps, Reflectors and Electrical Equipment — 19.2%
2013	29	71.0%	193	49,310	Brakes — 39.4%
2014	30	72.5%	178	48,130	Lamps, Reflectors and Electrical Equipment — 40.4%
2015	31	69.1%	162	44,247	Lamps, Reflectors and Electrical Equipment — 44.4%
2016	32	77.0%	174	49,622	Lamps, Reflectors and Electrical Equipment — 29.3%
2017	33	79.8%	168	47,146	Lamps, Reflectors and Electrical Equipment — 30.4%
2018	34	80.4%	138	41,014	Lamps, reflectors and electrical equipment — 29.0%
2019	35	82.9%	140	44,106	Lamps, reflectors and electrical equipment — 25.7%
2020	36	81.0%	105	47,798	Suspension — 21.0%
2021	37	83.1%	136	46,021	Lamps, reflectors and electrical equipment — 13.2%
2022	38	81.3%	107	45,316	Suspension — 16.8%
2023	39	80.1%	141	46,436	Lamps, reflectors and electrical equipment — 22.7%
2024	40	93.3%	238	43,052	Lamps, reflectors and electrical equipment — 9.2%

Common MOT Failures

Top failure categories across all test years for 1984 Ford Sierra, with age trends.

Lamps, Reflectors and Electrical Equipment

29.3%

↑ Increases with age

Lamps, reflectors and electrical equipment

18.7%

↓ Decreases with age

Suspension

18.6%

↓ Decreases with age

Body, Structure and General Items

17.1%

— Consistent

Brakes

16.5%

↓ 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
Suspension	17.9% (25 yrs)	3.4% (40 yrs)	-14.5%	🟢 ↓
Brakes	14.9% (25 yrs)	2.5% (40 yrs)	-12.4%	🟢 ↓

Other Manufacture Years

1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993

← Back to Ford Sierra overview

Looking for the best year to buy? See the full comparison on the Ford Sierra page →

About This Data

This page shows how Ford Sierra cars manufactured in 1984 perform at MOT as they age. Data spans from 2009 to 2024, covering 2,810 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.