1984 Porsche 911 — MOT History by Age

How cars manufactured in 1984 perform at MOT as they age

42 years

Current Age

79.6%

Latest Pass Rate

4,066

Total Tests (All Years)

94,065 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 Porsche 911 as it ages.

25 yrs66.3%

→ ↓4.0%

26 yrs62.3%

→ ↑1.4%

27 yrs63.7%

→ ↑5.2%

28 yrs68.9%

→ ↓5.2%

29 yrs63.7%

→ ↑8.6%

30 yrs72.3%

→ ↑0.9%

31 yrs73.2%

→ ↓1.3%

32 yrs71.9%

→ ↑0.1%

33 yrs72.0%

→ ↑3.4%

34 yrs75.4%

→ ↑5.1%

35 yrs80.5%

→ ↓2.2%

36 yrs78.3%

→ ↓1.1%

37 yrs77.2%

→ ↑3.8%

38 yrs81.0%

→ ↑0.1%

39 yrs81.1%

→ ↓1.5%

40 yrs79.6%

📊 View as table

Age	Pass Rate	Tests
25 yrs	66.3%	291
26 yrs	62.3%	284
27 yrs	63.7%	278
28 yrs	68.9%	273
29 yrs	63.7%	267
30 yrs	72.3%	264
31 yrs	73.2%	246
32 yrs	71.9%	249
33 yrs	72.0%	239
34 yrs	75.4%	187
35 yrs	80.5%	190
36 yrs	78.3%	152
37 yrs	77.2%	189
38 yrs	81.0%	200
39 yrs	81.1%	233
40 yrs	79.6%	524

Pass Rate Trend

How the 1984 Porsche 911 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (40 yrs)	79.6%	524
2023 (39 yrs)	81.1%	233
2022 (38 yrs)	81%	200
2021 (37 yrs)	77.2%	189
2020 (36 yrs)	78.3%	152
2019 (35 yrs)	80.5%	190
2018 (34 yrs)	75.4%	187
2017 (33 yrs)	72%	239
2016 (32 yrs)	71.9%	249
2015 (31 yrs)	73.2%	246
2014 (30 yrs)	72.3%	264
2013 (29 yrs)	63.7%	267
2012 (28 yrs)	68.9%	273
2011 (27 yrs)	63.7%	278
2010 (26 yrs)	62.3%	284
2009 (25 yrs)	66.3%	291

Year-by-Year MOT Results

2009

66.3%

Age (yrs) 25Tests 291Avg Mileage 104,217Top Failure Lamps, Reflectors and Electrical Equipment — 25.8%

2010High Fail Rate

62.3%

Age (yrs) 26Tests 284Avg Mileage 104,975Top Failure Lamps, Reflectors and Electrical Equipment — 29.2%

2011High Fail Rate

63.7%

Age (yrs) 27Tests 278Avg Mileage 106,082Top Failure Lamps, Reflectors and Electrical Equipment — 25.9%

2012

68.9%

Age (yrs) 28Tests 273Avg Mileage 103,931Top Failure Lamps, Reflectors and Electrical Equipment — 21.6%

2013High Fail Rate

63.7%

Age (yrs) 29Tests 267Avg Mileage 101,800Top Failure Lamps, Reflectors and Electrical Equipment — 48.7%

2014

72.3%

Age (yrs) 30Tests 264Avg Mileage 105,515Top Failure Lamps, Reflectors and Electrical Equipment — 48.5%

2015

73.2%

Age (yrs) 31Tests 246Avg Mileage 104,428Top Failure Lamps, Reflectors and Electrical Equipment — 39.4%

2016

71.9%

Age (yrs) 32Tests 249Avg Mileage 101,789Top Failure Lamps, Reflectors and Electrical Equipment — 42.2%

2017

72.0%

Age (yrs) 33Tests 239Avg Mileage 101,860Top Failure Lamps, Reflectors and Electrical Equipment — 41.8%

2018

75.4%

Age (yrs) 34Tests 187Avg Mileage 98,320Top Failure Lamps, reflectors and electrical equipment — 25.7%

2019

80.5%

Age (yrs) 35Tests 190Avg Mileage 100,409Top Failure Lamps, reflectors and electrical equipment — 33.2%

2020

78.3%

Age (yrs) 36Tests 152Avg Mileage 104,674Top Failure Lamps, reflectors and electrical equipment — 30.9%

2021

77.2%

Age (yrs) 37Tests 189Avg Mileage 94,105Top Failure Lamps, reflectors and electrical equipment — 28.0%

2022

81.0%

Age (yrs) 38Tests 200Avg Mileage 95,242Top Failure Lamps, reflectors and electrical equipment — 26.0%

2023

81.1%

Age (yrs) 39Tests 233Avg Mileage 92,984Top Failure Lamps, reflectors and electrical equipment — 27.9%

2024

79.6%

Age (yrs) 40Tests 524Avg Mileage 94,065Top Failure Lamps, reflectors and electrical equipment — 13.7%

MOT results for 1984 Porsche 911 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	25	66.3%	291	104,217	Lamps, Reflectors and Electrical Equipment — 25.8%
2010	26	62.3%	284	104,975	Lamps, Reflectors and Electrical Equipment — 29.2%
2011	27	63.7%	278	106,082	Lamps, Reflectors and Electrical Equipment — 25.9%
2012	28	68.9%	273	103,931	Lamps, Reflectors and Electrical Equipment — 21.6%
2013	29	63.7%	267	101,800	Lamps, Reflectors and Electrical Equipment — 48.7%
2014	30	72.3%	264	105,515	Lamps, Reflectors and Electrical Equipment — 48.5%
2015	31	73.2%	246	104,428	Lamps, Reflectors and Electrical Equipment — 39.4%
2016	32	71.9%	249	101,789	Lamps, Reflectors and Electrical Equipment — 42.2%
2017	33	72.0%	239	101,860	Lamps, Reflectors and Electrical Equipment — 41.8%
2018	34	75.4%	187	98,320	Lamps, reflectors and electrical equipment — 25.7%
2019	35	80.5%	190	100,409	Lamps, reflectors and electrical equipment — 33.2%
2020	36	78.3%	152	104,674	Lamps, reflectors and electrical equipment — 30.9%
2021	37	77.2%	189	94,105	Lamps, reflectors and electrical equipment — 28.0%
2022	38	81.0%	200	95,242	Lamps, reflectors and electrical equipment — 26.0%
2023	39	81.1%	233	92,984	Lamps, reflectors and electrical equipment — 27.9%
2024	40	79.6%	524	94,065	Lamps, reflectors and electrical equipment — 13.7%

Common MOT Failures

Top failure categories across all test years for 1984 Porsche 911, with age trends.

Lamps, Reflectors and Electrical Equipment

33.8%

↓ Decreases with age

Lamps, reflectors and electrical equipment

26.5%

↓ Decreases with age

Brakes

15.7%

↓ Decreases with age

Driver's View of the Road

12.2%

— Consistent

Suspension

10.0%

↓ 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	10.7% (25 yrs)	5.7% (40 yrs)	-5.0%	🟢 ↓
Brakes	13.4% (25 yrs)	9.4% (40 yrs)	-4.0%	🟢 ↓

Other Manufacture Years

Looking for the best year to buy? See the full comparison on the Porsche 911 page →

About This Data

This page shows how Porsche 911 cars manufactured in 1984 perform at MOT as they age. Data spans from 2009 to 2024, covering 4,066 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.