On average, 23.9% of cars will fail their MoT test in Slough, which puts the region below the national average of 29.7%. The most common failure causes are Lamps, reflectors and electrical equipment, Suspension and Visibility.

Cars registered in 2003 have the worst overall MoT pass rate, at 63.3%. The manufacturers with the highest fail rate in this region are Renault, Chrysler and Chevrolet. At the opposite end of the scale with the best pass rates are Infiniti, Bentley and Aston Martin.

Most common reasons for MoT failure

Test Item Failure Rate National Failure Rate Relative Rate
Lamps, reflectors and electrical equipment 8.5% 11.9% −29%
Suspension 4.9% 9.6% −49%
Visibility 4.1% 5.3% −24%
Tyres 4.0% 5.8% −31%
Brakes 3.5% 7.7% −55%
Noise, emissions and leaks 2.3% 3.6% −34%
Body, chassis, structure 2.2% 4.1% −48%

MoT failure rates by year of registration

Year of Registration Tests Failure Rate National Failure Rate Relative Rate
2021 83 16.9% 17.5% −4%
2020 150 6.7% 16.7% −60%
2019 1,127 9.1% 10.3% −11%
2018 14,291 10.5% 11.7% −10%
2017 14,834 11.8% 13.2% −11%
2016 15,419 14.1% 16.5% −15%
2015 14,970 16.9% 19.5% −13%
2014 14,160 18.6% 23.0% −19%
2013 13,291 21.8% 27.2% −20%
2012 12,309 24.3% 30.5% −20%
2011 11,608 26.4% 33.4% −21%
2010 11,987 29.2% 36.8% −21%
2009 11,477 30.6% 39.1% −22%
2008 10,822 32.3% 41.5% −22%
2007 11,327 33.1% 42.6% −22%
2006 9,211 32.6% 43.9% −26%
2005 7,515 35.5% 44.9% −21%
2004 5,902 36.1% 45.7% −21%
2003 4,587 36.7% 45.6% −19%
2002 3,295 35.0% 45.2% −23%
2001 2,216 32.9% 43.9% −25%
2000 1,415 32.8% 42.5% −23%
1999 1,026 31.0% 40.8% −24%
1998 717 27.9% 38.5% −28%
1997 519 30.3% 37.5% −19%
1996 331 29.3% 36.5% −20%
1995 215 22.3% 35.3% −37%
1994 176 33.0% 34.4% −4%
1993 145 29.7% 34.7% −15%
1992 142 24.6% 32.9% −25%
1991 150 15.3% 32.3% −53%
1990 198 20.2% 30.9% −35%
1989 149 21.5% 29.6% −27%
1988 130 16.2% 30.2% −47%
1987 81 21.0% 29.5% −29%
1986 61 13.1% 28.9% −55%
1985 75 22.7% 28.3% −20%
1983 57 15.8% 27.5% −43%

MoT failure rates by make

Make Tests Failure Rate National Failure Rate Relative Rate
Aston Martin 212 4.2% 10.3% −59%
Bentley 268 7.8% 10.3% −24%
Infiniti 155 9.7% 13.5% −28%
Maserati 121 9.9% 16.1% −38%
Porsche 1,939 10.6% 14.9% −29%
Ferrari 193 10.9% 6.9% +59%
Tesla 238 11.8% 13.3% −12%
LTI 146 12.3% 38.2% −68%
Lotus 126 13.5% 17.8% −24%
Abarth 284 17.3% 20.8% −17%
Lexus 1,228 17.8% 18.7% −5%
Land Rover 6,083 18.1% 25.2% −28%
Jaguar 2,959 18.1% 23.9% −24%
Skoda 3,213 18.6% 23.5% −21%
Audi 13,476 19.5% 22.3% −13%
BMW 18,856 19.7% 22.9% −14%
Mitsubishi 2,063 19.9% 28.7% −31%
MINI 7,324 20.2% 25.5% −21%
Jeep 675 20.6% 26.1% −21%
Kia 3,399 21.0% 26.5% −21%
Suzuki 1,796 21.9% 27.5% −20%
Volvo 4,893 21.9% 28.9% −24%
Mercedes-Benz 9,939 22.1% 22.3% −1%
SEAT 2,452 22.2% 27.1% −18%
Dacia 336 22.3% 24.7% −9%
Isuzu 127 22.8% 40.7% −44%
Subaru 335 23.3% 27.8% −16%
Nissan 10,502 23.9% 29.5% −19%
Hyundai 4,373 24.1% 26.1% −8%
Mazda 2,959 24.6% 28.2% −13%
Volkswagen 24,454 24.6% 29.0% −15%
Alfa Romeo 865 24.7% 33.7% −26%
Honda 9,539 25.4% 28.2% −10%
Toyota 10,207 26.1% 27.1% −4%
FIAT 5,571 26.2% 32.2% −19%
MG 426 27.0% 28.9% −7%
smart 151 27.2% 31.9% −15%
Ford 28,441 27.7% 31.5% −12%
Vauxhall 19,167 29.2% 34.2% −15%
Citroen 4,976 30.6% 34.2% −10%
DS 429 30.8% 36.3% −15%
Rover 261 31.0% 42.5% −27%
Peugeot 6,185 32.1% 34.0% −6%
SAAB 635 32.1% 39.5% −19%
Daihatsu 108 33.3% 36.3% −8%
Renault 4,944 34.5% 38.6% −11%
Chrysler 258 35.7% 41.2% −13%
Chevrolet 431 37.6% 45.1% −17%
 

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