Porsche 911
MOT data from 108,494 tests in 2024. Pass rate: 92.5%. Average mileage at test: 59,568 miles.
Common failure reasons
| Reason | Count |
|---|---|
| the aim of a headlamp is not within limits laid down in the requirements | 1,235 |
| lambda coefficient outside the default limits or the range specified by the manufacturer | 731 |
| a tyre seriously damaged | 673 |
| a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc | 654 |
| brake pipe damaged or excessively corroded | 632 |
| windscreen washers not working or not providing sufficient fluid to clear the windscreen | 571 |
| a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 564 |
| a tyre cords visible or damaged | 544 |
| tyre tread depth not in accordance with the requirements | 536 |
| a suspension joint dust cover missing or no longer prevents the ingress of dirt etc | 469 |
Pass rate by fuel type
| Fuel | Tests | Pass rate |
|---|---|---|
| Petrol | 108,203 | 92.6% |
| LP | 245 | 82.9% |
By registration year
| Year | Tests | Pass rate | |
|---|---|---|---|
| 1981 | 144 | 94.4% | |
| Top failures: steering rack gaiter or ball joint dust cover damaged or deteriorated, emissions levels exceed default limits, 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 | |||
| 1982 | 266 | 85.7% | |
| Top failures: 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, the aim of a headlamp is not within limits laid down in the requirements, a wheel bearing with excessive play | |||
| 1983 | 253 | 90.5% | |
| Top failures: a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, significant brake effort recorded with no brake applied indicating a binding brake, brake hose bulging under pressure | |||
| 1984 | 659 | 84.4% | |
| Top failures: windscreen washers not working or not providing sufficient fluid to clear the windscreen, significant brake effort recorded with no brake applied indicating a binding brake, 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 | |||
| 1985 | 723 | 86.2% | |
| Top failures: 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, the aim of a headlamp is not within limits laid down in the requirements | |||
| 1986 | 844 | 87.6% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, 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, windscreen washers not working or not providing sufficient fluid to clear the windscreen | |||
| 1987 | 1,011 | 85.6% | |
| Top failures: 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, emissions levels exceed default limits | |||
| 1988 | 867 | 92.2% | |
| Top failures: windscreen washers not working or not providing sufficient fluid to clear the windscreen, emissions levels exceed default limits, significant brake effort recorded with no brake applied indicating a binding brake | |||
| 1989 | 1,321 | 91.6% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | |||
| 1990 | 1,781 | 91.9% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | |||
| 1991 | 882 | 92.4% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, number plate does not conform to the specified requirements, windscreen washers not working or not providing sufficient fluid to clear the windscreen | |||
| 1992 | 569 | 94.6% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, windscreen washers not working or not providing sufficient fluid to clear the windscreen | |||
| 1993 | 649 | 91.7% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, 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, emissions levels exceed the manufacturer's specified limits | |||
| 1994 | 1,428 | 91.3% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 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 | |||
| 1995 | 1,654 | 90% | |
| Top failures: a suspension joint dust cover missing or no longer prevents the ingress of dirt etc, the aim of a headlamp is not within limits laid down in the requirements, windscreen washers not working or not providing sufficient fluid to clear the windscreen | |||
| 1996 | 2,484 | 92% | |
| Top failures: 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 suspension joint dust cover missing or no longer prevents the ingress of dirt etc, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc | |||
| 1997 | 1,986 | 90.9% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc, windscreen washers not working or not providing sufficient fluid to clear the windscreen | |||
| 1998 | 3,082 | 86.5% | |
| Top failures: brake pipe damaged or excessively corroded, lambda coefficient outside the default limits or the range specified by the manufacturer, a headlamp or light source missing, inoperative or more than ½ not functioning in the case of led | |||
| 1999 | 3,407 | 87.5% | |
| Top failures: brake pipe damaged or excessively corroded, tyre tread depth not in accordance with the requirements, lambda coefficient outside the default limits or the range specified by the manufacturer | |||
| 2000 | 1,822 | 86.9% | |
| Top failures: brake pipe damaged or excessively corroded, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, the aim of a headlamp is not within limits laid down in the requirements | |||
| 2001 | 2,627 | 88.4% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, brake pipe damaged or excessively corroded, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc | |||
| 2002 | 4,556 | 87.4% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc | |||
| 2003 | 4,715 | 87.3% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, brake pipe damaged or excessively corroded, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | |||
| 2004 | 4,610 | 88.9% | |
| Top failures: brake pipe damaged or excessively corroded, lambda coefficient outside the default limits or the range specified by the manufacturer, the aim of a headlamp is not within limits laid down in the requirements | |||
| 2005 | 4,710 | 89.5% | |
| Top failures: lambda coefficient outside the default limits or the range specified by the manufacturer, the aim of a headlamp is not within limits laid down in the requirements, brake pipe damaged or excessively corroded | |||
| 2006 | 4,907 | 91% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, brake pipe damaged or excessively corroded, lambda coefficient outside the default limits or the range specified by the manufacturer | |||
| 2007 | 4,366 | 90.3% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, lambda coefficient outside the default limits or the range specified by the manufacturer, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc | |||
| 2008 | 3,573 | 92.2% | |
| Top failures: a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, a tyre seriously damaged, lambda coefficient outside the default limits or the range specified by the manufacturer | |||
| 2009 | 2,630 | 92.7% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, a tyre cords visible or damaged | |||
| 2010 | 3,042 | 94.3% | |
| Top failures: the aim of a headlamp is not within limits laid down in the requirements, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, a tyre seriously damaged | |||
| 2011 | 2,125 | 95.3% | |
| Top failures: a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, a tyre cords visible or damaged, a tyre seriously damaged | |||
| 2012 | 3,901 | 95.1% | |
| Top failures: a suspension pin, bush or joint excessively worn, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc, a tyre seriously damaged | |||
| 2013 | 3,218 | 96.1% | |
| Top failures: a tyre seriously damaged, brake pipe damaged or excessively corroded, a tyre cords visible or damaged | |||
| 2014 | 4,454 | 96.8% | |
| Top failures: a tyre cords visible or damaged, windscreen washers not working or not providing sufficient fluid to clear the windscreen, a tyre seriously damaged | |||
| 2015 | 4,420 | 97.3% | |
| Top failures: a tyre seriously damaged, a tyre cords visible or damaged, tyre tread depth not in accordance with the requirements | |||
| 2016 | 4,729 | 97.6% | |
| Top failures: a tyre seriously damaged, a tyre cords visible or damaged, a transmission shaft constant velocity joint boot missing or no longer prevents the ingress of dirt etc | |||
| 2017 | 5,038 | 97.3% | |
| Top failures: a tyre seriously damaged, a tyre cords visible or damaged, number plate does not conform to the specified requirements | |||
| 2018 | 6,330 | 96.9% | |
| Top failures: a tyre cords visible or damaged, a tyre seriously damaged, number plate does not conform to the specified requirements | |||
| 2019 | 6,205 | 97.4% | |
| Top failures: a tyre seriously damaged, a tyre cords visible or damaged, tyre tread depth not in accordance with the requirements | |||
| 2020 | 1,940 | 97.8% | |
| Top failures: a tyre seriously damaged, number plate does not conform to the specified requirements, a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | |||
Mileage at test
25th percentile
48,082 mi
Median
64,942 mi
75th percentile
83,311 mi
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