1998 Porsche 911 — MOT History by Age

How cars manufactured in 1998 perform at MOT as they age

28 years

Current Age

82.0%

Latest Pass Rate

20,939

Total Tests (All Years)

97,690 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 1998 Porsche 911 as it ages.

11 yrs72.5%

→ ↑0.1%

12 yrs72.6%

→ ↑3.2%

13 yrs75.8%

→ ↓0.7%

14 yrs75.1%

→ ↓3.0%

15 yrs72.1%

→ ↑0.1%

16 yrs72.2%

→ ↑1.9%

17 yrs74.1%

→ ↓0.1%

18 yrs74.0%

→ ↑2.2%

19 yrs76.2%

→ ↑0.3%

20 yrs76.5%

→ ↑3.3%

21 yrs79.8%

→ ↓2.0%

22 yrs77.8%

→ ↑1.5%

23 yrs79.3%

→ ↓0.1%

24 yrs79.2%

→ ↑0.5%

25 yrs79.7%

→ ↑2.3%

26 yrs82.0%

📊 View as table

Age	Pass Rate	Tests
11 yrs	72.5%	1,583
12 yrs	72.6%	1,476
13 yrs	75.8%	1,481
14 yrs	75.1%	1,437
15 yrs	72.1%	1,413
16 yrs	72.2%	1,383
17 yrs	74.1%	1,362
18 yrs	74.0%	1,330
19 yrs	76.2%	1,271
20 yrs	76.5%	895
21 yrs	79.8%	886
22 yrs	77.8%	837
23 yrs	79.3%	1,150
24 yrs	79.2%	917
25 yrs	79.7%	1,032
26 yrs	82.0%	2,486

Pass Rate Trend

How the 1998 Porsche 911 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (26 yrs)	82%	2,486
2023 (25 yrs)	79.7%	1,032
2022 (24 yrs)	79.2%	917
2021 (23 yrs)	79.3%	1,150
2020 (22 yrs)	77.8%	837
2019 (21 yrs)	79.8%	886
2018 (20 yrs)	76.5%	895
2017 (19 yrs)	76.2%	1,271
2016 (18 yrs)	74%	1,330
2015 (17 yrs)	74.1%	1,362
2014 (16 yrs)	72.2%	1,383
2013 (15 yrs)	72.1%	1,413
2012 (14 yrs)	75.1%	1,437
2011 (13 yrs)	75.8%	1,481
2010 (12 yrs)	72.6%	1,476
2009 (11 yrs)	72.5%	1,583

Year-by-Year MOT Results

2009

72.5%

Age (yrs) 11Tests 1,583Avg Mileage 70,811Top Failure Brakes — 14.2%

2010

72.6%

Age (yrs) 12Tests 1,476Avg Mileage 73,721Top Failure Lamps, Reflectors and Electrical Equipment — 13.9%

2011

75.8%

Age (yrs) 13Tests 1,481Avg Mileage 76,052Top Failure Lamps, Reflectors and Electrical Equipment — 13.2%

2012

75.1%

Age (yrs) 14Tests 1,437Avg Mileage 79,321Top Failure Lamps, Reflectors and Electrical Equipment — 13.4%

2013

72.1%

Age (yrs) 15Tests 1,413Avg Mileage 81,255Top Failure Brakes — 33.1%

2014

72.2%

Age (yrs) 16Tests 1,383Avg Mileage 86,066Top Failure Brakes — 34.0%

2015

74.1%

Age (yrs) 17Tests 1,362Avg Mileage 86,976Top Failure Brakes — 29.6%

2016

74.0%

Age (yrs) 18Tests 1,330Avg Mileage 88,660Top Failure Brakes — 29.2%

2017

76.2%

Age (yrs) 19Tests 1,271Avg Mileage 90,547Top Failure Brakes — 25.3%

2018

76.5%

Age (yrs) 20Tests 895Avg Mileage 92,709Top Failure Brakes — 31.3%

2019

79.8%

Age (yrs) 21Tests 886Avg Mileage 94,296Top Failure Brakes — 27.2%

2020

77.8%

Age (yrs) 22Tests 837Avg Mileage 95,041Top Failure Brakes — 33.3%

2021

79.3%

Age (yrs) 23Tests 1,150Avg Mileage 97,223Top Failure Brakes — 27.5%

2022

79.2%

Age (yrs) 24Tests 917Avg Mileage 95,357Top Failure Brakes — 23.9%

2023

79.7%

Age (yrs) 25Tests 1,032Avg Mileage 96,428Top Failure Brakes — 26.5%

2024

82.0%

Age (yrs) 26Tests 2,486Avg Mileage 97,690Top Failure Brakes — 17.3%

MOT results for 1998 Porsche 911 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	11	72.5%	1,583	70,811	Brakes — 14.2%
2010	12	72.6%	1,476	73,721	Lamps, Reflectors and Electrical Equipment — 13.9%
2011	13	75.8%	1,481	76,052	Lamps, Reflectors and Electrical Equipment — 13.2%
2012	14	75.1%	1,437	79,321	Lamps, Reflectors and Electrical Equipment — 13.4%
2013	15	72.1%	1,413	81,255	Brakes — 33.1%
2014	16	72.2%	1,383	86,066	Brakes — 34.0%
2015	17	74.1%	1,362	86,976	Brakes — 29.6%
2016	18	74.0%	1,330	88,660	Brakes — 29.2%
2017	19	76.2%	1,271	90,547	Brakes — 25.3%
2018	20	76.5%	895	92,709	Brakes — 31.3%
2019	21	79.8%	886	94,296	Brakes — 27.2%
2020	22	77.8%	837	95,041	Brakes — 33.3%
2021	23	79.3%	1,150	97,223	Brakes — 27.5%
2022	24	79.2%	917	95,357	Brakes — 23.9%
2023	25	79.7%	1,032	96,428	Brakes — 26.5%
2024	26	82.0%	2,486	97,690	Brakes — 17.3%

Common MOT Failures

Top failure categories across all test years for 1998 Porsche 911, with age trends.

Brakes

24.2%

↑ Increases with age

Lamps, reflectors and electrical equipment

20.4%

— Consistent

Lamps, Reflectors and Electrical Equipment

19.2%

↓ Decreases with age

Tyres

13.1%

— Consistent

Suspension

12.9%

↑ Increases 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	6.1% (11 yrs)	13.0% (26 yrs)	+6.9%	🔴 ↑
Brakes	14.2% (11 yrs)	17.3% (26 yrs)	+3.1%	🔴 ↑
Tyres	11.1% (11 yrs)	8.3% (26 yrs)	-2.8%	🟢 ↓

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 1998 perform at MOT as they age. Data spans from 2009 to 2024, covering 20,939 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.