Car exhaust emissions

MOT emissions test failures DOUBLE since tougher standards introduced

Car exhaust emissionsMOT emissions test failures have almost doubled in a year since the government introduced changes to the MOT test on May 20 2018.

The new test gives a ‘major fault’ failure if the MOT tester can either see smoke of any colour coming from the exhaust, or sees evidence the diesel particulate filter (DPF) has been tampered with.

Almost 745,000 cars have subsequently failed the emissions test, compared to 350,000 in the same period in 2017.

Technician conducting an MOT emissions test

Analysis of the results indicates it is diesel cars that have seen the biggest percentage increase in failure rate.

In 2017, around 58,000 diesels failed the MOT emissions test. In 2018, this rose to almost 240,000 cars – a increase of more than 310 percent.

Just over 290,000 petrol cars failed in 2017, rising to over half a million this year – 213,000 more cars, or a 73 percent increase.

Diesel van emission test failures rocketed by a staggering 448 percent.

Despite the huge growth in emissions test failures, overall MOT failure rates have remained broadly in line with 2017. Almost 35 percent of petrol MOT tests resulted in a failure, and just over 33 percent of diesels failed.

Gareth Llewellyn, chief executive of the Driver and Vehicle Standards Agency (DVSA), said: “DVSA’s priority is to protect everyone from unsafe vehicles and drivers.

“Since introducing the new tighter MOT emissions test in May, nearly 750,000 vehicles have been taken off the road or fixed.”

A major fault MOT test means motorists need to repair their car immediately before they can book it for an MOT retest.

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