1979 Porsche 911 — MOT History by Age

How cars manufactured in 1979 perform at MOT as they age

47 years

Current Age

85.5%

Latest Pass Rate

2,308

Total Tests (All Years)

143,516 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 1979 Porsche 911 as it ages.

30 yrs65.9%

→ ↑0.6%

31 yrs66.5%

→ ↑5.4%

32 yrs71.9%

→ ↓5.1%

33 yrs66.8%

→ ↑1.1%

34 yrs67.9%

→ ↓2.2%

35 yrs65.7%

→ ↑7.2%

36 yrs72.9%

→ ↓7.3%

37 yrs65.6%

→ ↑3.4%

38 yrs69.0%

→ ↑2.1%

39 yrs71.1%

→ ↓3.7%

40 yrs67.4%

→ ↑10.4%

41 yrs77.8%

→ ↑5.1%

42 yrs82.9%

→ ↓8.5%

43 yrs74.4%

→ ↑7.7%

44 yrs82.1%

→ ↑3.4%

45 yrs85.5%

📊 View as table

Age	Pass Rate	Tests
30 yrs	65.9%	211
31 yrs	66.5%	197
32 yrs	71.9%	196
33 yrs	66.8%	187
34 yrs	67.9%	196
35 yrs	65.7%	181
36 yrs	72.9%	177
37 yrs	65.6%	209
38 yrs	69.0%	197
39 yrs	71.1%	142
40 yrs	67.4%	132
41 yrs	77.8%	63
42 yrs	82.9%	70
43 yrs	74.4%	39
44 yrs	82.1%	56
45 yrs	85.5%	55

Pass Rate Trend

How the 1979 Porsche 911 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (45 yrs)	85.5%	55
2023 (44 yrs)	82.1%	56
2022 (43 yrs)	74.4%	39
2021 (42 yrs)	82.9%	70
2020 (41 yrs)	77.8%	63
2019 (40 yrs)	67.4%	132
2018 (39 yrs)	71.1%	142
2017 (38 yrs)	69%	197
2016 (37 yrs)	65.6%	209
2015 (36 yrs)	72.9%	177
2014 (35 yrs)	65.7%	181
2013 (34 yrs)	67.9%	196
2012 (33 yrs)	66.8%	187
2011 (32 yrs)	71.9%	196
2010 (31 yrs)	66.5%	197
2009 (30 yrs)	65.9%	211

Year-by-Year MOT Results

2009

65.9%

Age (yrs) 30Tests 211Avg Mileage 106,397Top Failure Lamps, Reflectors and Electrical Equipment — 18.5%

2010

66.5%

Age (yrs) 31Tests 197Avg Mileage 112,320Top Failure Lamps, Reflectors and Electrical Equipment — 22.8%

2011

71.9%

Age (yrs) 32Tests 196Avg Mileage 111,657Top Failure Lamps, Reflectors and Electrical Equipment — 20.4%

2012

66.8%

Age (yrs) 33Tests 187Avg Mileage 108,029Top Failure Lamps, Reflectors and Electrical Equipment — 23.0%

2013

67.9%

Age (yrs) 34Tests 196Avg Mileage 107,138Top Failure Lamps, Reflectors and Electrical Equipment — 54.1%

2014

65.7%

Age (yrs) 35Tests 181Avg Mileage 105,503Top Failure Lamps, Reflectors and Electrical Equipment — 51.9%

2015

72.9%

Age (yrs) 36Tests 177Avg Mileage 105,964Top Failure Lamps, Reflectors and Electrical Equipment — 45.8%

2016

65.6%

Age (yrs) 37Tests 209Avg Mileage 106,062Top Failure Lamps, Reflectors and Electrical Equipment — 49.3%

2017

69.0%

Age (yrs) 38Tests 197Avg Mileage 106,547Top Failure Lamps, Reflectors and Electrical Equipment — 34.0%

2018

71.1%

Age (yrs) 39Tests 142Avg Mileage 107,453Top Failure Lamps, reflectors and electrical equipment — 23.9%

2019

67.4%

Age (yrs) 40Tests 132Avg Mileage 106,693Top Failure Lamps, reflectors and electrical equipment — 28.0%

2020

77.8%

Age (yrs) 41Tests 63Avg Mileage 99,149Top Failure Brakes — 30.2%

2021

82.9%

Age (yrs) 42Tests 70Avg Mileage 92,222Top Failure Suspension — 15.7%

2022

74.4%

Age (yrs) 43Tests 39Avg Mileage 95,942Top Failure Brakes — 46.2%

2023

82.1%

Age (yrs) 44Tests 56Avg Mileage 95,521Top Failure Brakes — 17.9%

2024

85.5%

Age (yrs) 45Tests 55Avg Mileage 143,516Top Failure Lamps, reflectors and electrical equipment — 10.9%

MOT results for 1979 Porsche 911 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	30	65.9%	211	106,397	Lamps, Reflectors and Electrical Equipment — 18.5%
2010	31	66.5%	197	112,320	Lamps, Reflectors and Electrical Equipment — 22.8%
2011	32	71.9%	196	111,657	Lamps, Reflectors and Electrical Equipment — 20.4%
2012	33	66.8%	187	108,029	Lamps, Reflectors and Electrical Equipment — 23.0%
2013	34	67.9%	196	107,138	Lamps, Reflectors and Electrical Equipment — 54.1%
2014	35	65.7%	181	105,503	Lamps, Reflectors and Electrical Equipment — 51.9%
2015	36	72.9%	177	105,964	Lamps, Reflectors and Electrical Equipment — 45.8%
2016	37	65.6%	209	106,062	Lamps, Reflectors and Electrical Equipment — 49.3%
2017	38	69.0%	197	106,547	Lamps, Reflectors and Electrical Equipment — 34.0%
2018	39	71.1%	142	107,453	Lamps, reflectors and electrical equipment — 23.9%
2019	40	67.4%	132	106,693	Lamps, reflectors and electrical equipment — 28.0%
2020	41	77.8%	63	99,149	Brakes — 30.2%
2021	42	82.9%	70	92,222	Suspension — 15.7%
2022	43	74.4%	39	95,942	Brakes — 46.2%
2023	44	82.1%	56	95,521	Brakes — 17.9%
2024	45	85.5%	55	143,516	Lamps, reflectors and electrical equipment — 10.9%

Common MOT Failures

Top failure categories across all test years for 1979 Porsche 911, with age trends.

Lamps, Reflectors and Electrical Equipment

33.5%

↓ Decreases with age

Brakes

26.9%

↓ Decreases with age

Lamps, reflectors and electrical equipment

18.3%

↓ Decreases with age

Suspension

15.3%

↓ Decreases with age

Driver's View of the Road

14.6%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	11.4% (30 yrs)	1.8% (45 yrs)	-9.6%	🟢 ↓
Brakes	16.6% (30 yrs)	7.3% (45 yrs)	-9.3%	🟢 ↓
Tyres	6.6% (30 yrs)	1.8% (45 yrs)	-4.8%	🟢 ↓

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 1979 perform at MOT as they age. Data spans from 2009 to 2024, covering 2,308 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.