Porsche 911 MOT Check

MOT pass rates, common failures, and reliability data for the Porsche 911. Check any 911 by registration number below.

Free, instant, no sign-up required.

90.9%

Avg Pass Rate

+0.9%

vs Porsche Avg

Year Ranges

Excellent

Reliability

Porsche 911 — MOT Reliability Overview

The Porsche 911 has an average MOT pass rate of 90.9%, which is 0.9 percentage points above the Porsche brand average of 90.1%. This is a strong result, indicating that the 911 is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

The most common reasons a Porsche 911 fails its MOT are windscreen washers not working or not providing sufficient fluid to clear the windscreen, an obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning, a direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning. If you are preparing your 911 for its MOT, checking these areas first could save you a retest fee. Our detailed fault analysis includes estimated repair costs for each failure type.

Before buying a used Porsche 911, we recommend checking the full MOT history, write-off status, outstanding finance, and stolen vehicle status. These checks can be done for free using the registration number.

MOT Pass Rate by Year

How the Porsche 911 performs at MOT across different model years.

2021

Based on 75 vehicles

100.0%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

Mileage at 3yr

21k mi

2020

Based on 3,008 vehicles

97.1%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

3.4%

Mileage at 3yr

23k mi

Mileage at 5yr

30k mi

2019

Based on 9,018 vehicles

97.0%Excellent

Porsche average: 90.1%

Dangerous Defects

0.6%

Retest Rate

3.7%

Mileage at 3yr

20k mi

Mileage at 5yr

34k mi

2018

Based on 9,371 vehicles

96.2%Excellent

Porsche average: 90.1%

Dangerous Defects

0.6%

Retest Rate

6.2%

Mileage at 5yr

27k mi

2017

Based on 7,939 vehicles

97.0%Excellent

Porsche average: 90.1%

Dangerous Defects

0.6%

Retest Rate

2.8%

Mileage at 5yr

31k mi

2016

Based on 7,037 vehicles

97.1%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

3.6%

2015

Based on 6,506 vehicles

96.9%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

3.0%

Mileage at 10yr

56k mi

2014

Based on 6,132 vehicles

96.2%Excellent

Porsche average: 90.1%

Dangerous Defects

0.6%

Retest Rate

4.4%

Mileage at 10yr

53k mi

2013

Based on 4,605 vehicles

95.4%Excellent

Porsche average: 90.1%

Dangerous Defects

0.7%

Retest Rate

5.1%

Mileage at 10yr

65k mi

2012

Based on 5,473 vehicles

94.3%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

6.5%

Mileage at 10yr

76k mi

2011

Based on 3,546 vehicles

94.6%Excellent

Porsche average: 90.1%

Dangerous Defects

0.9%

Retest Rate

6.0%

2010

Based on 5,025 vehicles

93.8%Excellent

Porsche average: 90.1%

Dangerous Defects

1.0%

Retest Rate

5.7%

2009

Based on 4,188 vehicles

91.6%Excellent

Porsche average: 90.1%

Dangerous Defects

1.4%

Retest Rate

8.3%

2008

Based on 5,579 vehicles

91.1%Excellent

Porsche average: 90.1%

Dangerous Defects

0.9%

Retest Rate

12.0%

2007

Based on 7,302 vehicles

89.6%Excellent

Porsche average: 90.1%

Dangerous Defects

1.3%

Retest Rate

10.1%

2006

Based on 8,428 vehicles

89.2%Excellent

Porsche average: 90.1%

Dangerous Defects

1.2%

Retest Rate

9.5%

2005

Based on 8,187 vehicles

88.5%Excellent

Porsche average: 90.1%

Dangerous Defects

1.7%

Retest Rate

11.1%

2004

Based on 6,994 vehicles

86.9%Excellent

Porsche average: 90.1%

Dangerous Defects

1.8%

Retest Rate

12.1%

2003

Based on 7,157 vehicles

85.2%Excellent

Porsche average: 90.1%

Dangerous Defects

1.9%

Retest Rate

13.1%

2002

Based on 6,719 vehicles

85.2%Excellent

Porsche average: 90.1%

Dangerous Defects

1.9%

Retest Rate

13.3%

2001

Based on 4,058 vehicles

85.9%Excellent

Porsche average: 90.1%

Dangerous Defects

1.7%

Retest Rate

12.0%

2000

Based on 2,704 vehicles

84.9%Good

Porsche average: 90.1%

Dangerous Defects

2.0%

Retest Rate

15.0%

1999

Based on 4,502 vehicles

85.6%Excellent

Porsche average: 90.1%

Dangerous Defects

1.4%

Retest Rate

11.7%

1998

Based on 3,932 vehicles

84.8%Good

Porsche average: 90.1%

Dangerous Defects

1.2%

Retest Rate

12.8%

1997

Based on 2,655 vehicles

89.8%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

7.8%

1996

Based on 3,402 vehicles

91.0%Excellent

Porsche average: 90.1%

Dangerous Defects

0.6%

Retest Rate

6.8%

1995

Based on 2,330 vehicles

89.3%Excellent

Porsche average: 90.1%

Dangerous Defects

0.6%

Retest Rate

7.5%

1994

Based on 1,916 vehicles

90.2%Excellent

Porsche average: 90.1%

Dangerous Defects

0.4%

Retest Rate

6.4%

1993

Based on 915 vehicles

89.9%Excellent

Porsche average: 90.1%

Dangerous Defects

0.2%

Retest Rate

6.4%

1992

Based on 799 vehicles

93.2%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

3.0%

1991

Based on 1,145 vehicles

91.1%Excellent

Porsche average: 90.1%

Dangerous Defects

0.2%

Retest Rate

6.8%

1990

Based on 2,442 vehicles

90.2%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

7.3%

1989

Based on 1,847 vehicles

90.3%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

8.2%

1988

Based on 1,318 vehicles

88.9%Excellent

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

9.5%

1987

Based on 1,383 vehicles

84.5%Good

Porsche average: 90.1%

Dangerous Defects

0.6%

Retest Rate

13.2%

1986

Based on 1,165 vehicles

85.8%Excellent

Porsche average: 90.1%

Dangerous Defects

0.3%

Retest Rate

11.1%

1985

Based on 993 vehicles

84.4%Good

Porsche average: 90.1%

Dangerous Defects

0.5%

Retest Rate

12.1%

1984

Based on 903 vehicles

83.8%Good

Porsche average: 90.1%

Dangerous Defects

1.0%

Retest Rate

9.3%

1983

Based on 413 vehicles

88.9%Excellent

Porsche average: 90.1%

Dangerous Defects

0.4%

Retest Rate

9.4%

1982

Based on 386 vehicles

86.0%Excellent

Porsche average: 90.1%

Dangerous Defects

0.7%

Retest Rate

10.1%

1981

Based on 199 vehicles

89.4%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

Retest Rate

5.4%

1980

Based on 108 vehicles

88.9%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

Retest Rate

5.5%

1979

Based on 124 vehicles

87.1%Excellent

Porsche average: 90.1%

Dangerous Defects

1.4%

Retest Rate

7.2%

1978

Based on 103 vehicles

92.2%Excellent

Porsche average: 90.1%

Dangerous Defects

1.3%

Retest Rate

3.9%

1977

Based on 59 vehicles

100.0%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

1976

Based on 53 vehicles

96.2%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

Retest Rate

3.0%

1975

Based on 67 vehicles

92.5%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

Retest Rate

4.2%

1974

Based on 58 vehicles

93.1%Excellent

Porsche average: 90.1%

Dangerous Defects

2.4%

Retest Rate

4.8%

1973

Based on 96 vehicles

91.7%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

Retest Rate

1.9%

1972

Based on 69 vehicles

95.7%Excellent

Porsche average: 90.1%

Dangerous Defects

0.0%

0

Based on 52,087 vehicles

89.7%Excellent

Porsche average: 90.1%

Mileage at 5yr

60k mi

Top MOT Failures — Porsche 911

The most common reasons a Porsche 911 fails its MOT, aggregated across all year ranges.

Windscreen washers not working or not providing sufficient fluid to clear the windscreen

1.6%

An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning

1.4%

A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

1.4%

Emissions levels exceed default limits

1.3%

A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning

1.2%

Porsche 911 Common Faults & Repair Costs

Other Porsche Models

Compare MOT reliability across Porsche models.

Porsche Cayman

95.7% pass rate

Porsche Carrera Coupe Sport

88.4% pass rate

Porsche 911 Carrera 4 S

100.0% pass rate

Porsche 911 Carrera

99.1% pass rate

Porsche Carrera Gt

87.5% pass rate

Porsche Panamera 4s E-hybrid S-a

86.8% pass rate

Useful MOT Guides

Common MOT Failures

The most common reasons UK vehicles fail their MOT — and how to prepare.

MOT Checklist

Pre-MOT checklist to improve your chances of passing first time.

Advisory vs Failure

Understanding the difference between MOT advisories and failures.

See detailed fault analysis for Porsche 911

Porsche 911 — Frequently Asked Questions

Common questions about the Porsche 911 MOT and reliability.

What is the MOT pass rate for the Porsche 911?

The average MOT pass rate for the Porsche 911 is 90.9% compared to the Porsche average of 90.1%. Pass rates vary by year — check the year-by-year breakdown on this page for details.

What are the most common MOT failures on a Porsche 911?

The most common MOT failures on the Porsche 911 are: Windscreen washers not working or not providing sufficient fluid to clear the windscreen (1.6%), An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning (1.4%), A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning (1.4%). These are the components most likely to cause an MOT failure.

Is the Porsche 911 reliable?

With an average MOT pass rate of 90.9%, the Porsche 911 is rated as "Excellent" for reliability. This is a strong result suggesting good build quality and fewer common defects.

How do I check the MOT history of a Porsche 911?

Enter the vehicle's registration number in the search box at the top of this page. You will instantly see the complete MOT history including every test result, mileage readings, advisories, and dangerous defects — completely free.

What mileage should I expect on a Porsche 911?

Typical mileage for the Porsche 911: 21,230 miles at 3 years. Use these benchmarks when evaluating a used 911 to spot vehicles with unusually high or low mileage.

Check Your Porsche 911's MOT History

Enter the registration number for the full MOT history — free and instant.