Thousands of UK motorists removing diesel particulate filters

DVSA figures reveal 1,800 diesel drivers have been caught without a DPF since 2014

Emissions tests questioned

Thousands of drivers have been caught driving without their diesel particulate filter, new figures reveal. The Driver and Vehicle Standards Agency has caught 1,800 drivers since 2014 driving with the pollution-reducing filter removed from their car.

While it’s not illegal to remove a car’s DPF, it is illegal to drive without it if one should be fitted. It’s believed some drivers whose DPFs become blocked are simply bypassing the filters by removing them rather than paying for a replacement, which typically costs around £1,000. In doing so, car drivers are risking a £1,000 fine, while the penalty for driving a van without a DPF stands at £2,500.

Diesel particulate filters trap microscopic emissions produced by diesel engines that would otherwise be expelled into the environment. They require regular ‘regeneration’, however, which involves burning the captured particles off. This process can only occur at high temperatures, typically reached when a vehicle is driven at relatively high speed. Diesel drivers who predominantly drive in urban areas can therefore be faced with blocked DPFs, as their vehicles don’t regularly reach the conditions necessary for regeneration to occur.

• UK Child booster seat and baby car seat laws explained

The process for removing a DPF is a relatively simple one that requires cutting a hole in a vehicle’s exhaust, removing the filter and welding the resultant hole shut. Although MoT tests require diesel cars to have a DPF, this is checked via a visual inspection rather than emissions analysis. Removing the filter doesn’t affect the car’s performance, and some motorists even state they achieve better fuel economy and engine performance without one.

Nick Molden, chief executive of Emissions Analytics, told the BBC: “The MoT test is clearly not fit for purpose in checking if a DPF has been removed", while Frank Kelly, professor of environmental health at Kings College, London, explained that “a car with a DPF removed has a particulate count 20 times higher than one with it.” Since 2000, diesel particulate filters have reduced particle matter emissions by 90 per cent.

• Dutch move to ban diesel and petrol cars by 2025

The news follows previous reports that found numerous websites and online services offer DPF removal services

Services advertised on sites like Google, eBay and Gumtree offer to remove the filter for a fee. The garages offering this service are able to exploit the legal loophole that means driving a diesel car with its DPF removed is illegal, but the act of removing the filter is not.

Online retailers state the advertisements will not be banned because the act of removing a diesel particulate filter is not illegal. Were the laws to change, however, the sites admitted the advertisements would be removed.

Poor air quality is associated with 40,000 premature deaths in the UK every year, and campaign group Friends of the Earth (FoE) recently wrote to the Advertising Standards Authority to ban advertisements for services offering filter removal. The Group is also calling on the Government to tackle the practice head on.

Friends of the Earth air pollution campaigner, Oliver Hayes, said: “Air pollution is a public health crisis of breath-taking proportions. The dodgy practice of removing pollution filters from cars is not only risking people’s health, but also putting drivers at risk of prosecution for the simple fact that it’s illegal to drive a car with its DPF removed.

• How to scrap your car, and what prices to expect

“We’re asking the ASA to clamp down on those advertising these dubious practices and help prevent more deadly pollution hitting our children’s lungs. But we’re also calling on the Government to make it illegal to remove these pollution filters in the first place. Unless they do, the absurd loophole remains whereby unscrupulous garages can remove a pollution filter but it’s only the driver, once they’ve turned the engine on, who is breaking the law.

What do you think about the practice of removing DPF filters from cars? Let us know in the comments section...

Recommended

All mobile phone use behind the wheel to be banned
Van mobile phone
News

All mobile phone use behind the wheel to be banned

A Government consultation seeks to update UK law in line with modern technology and close loopholes allowing drivers to take pictures and video at the…
16 Oct 2020
VED road tax: how much does it cost?
car tax calculator
Consumer news

VED road tax: how much does it cost?

Confused by VED road tax? Our comprehensive guide explains how much you'll pay on your next car
25 Sep 2020
Dartford Crossing toll: follow our guide and avoid a fine!
Dartford Crossing bridge
Consumer news

Dartford Crossing toll: follow our guide and avoid a fine!

Read our complete Dartford Crossing guide for when and how to pay the Dart Charge, along with guidance on appealing a fine
25 Sep 2020
Should you buy or lease your new car?
Tips & advice

Should you buy or lease your new car?

Should you buy or lease your new car? That is the big question facing millions of people who are eyeing up a new set of wheels, we talk you through th…
23 Sep 2020

Most Popular

New Audi RS e-tron GT electric supercar to boast around 700bhp
Audi e-tron GT

New Audi RS e-tron GT electric supercar to boast around 700bhp

The hot Audi RS e-tron GT will use a triple-electric motor set-up and our exclusive images preview how it could look
16 Oct 2020
Honda axes diesel power in the UK
Honda

Honda axes diesel power in the UK

Honda has quietly phased-out its diesel-powered models in Britain
19 Oct 2020
New 2022 Mercedes EQE electric saloon to rival Tesla Model S
Mercedes EQE

New 2022 Mercedes EQE electric saloon to rival Tesla Model S

The all-electric Mercedes EQE saloon will below the EQS limousine when it arrives in 2022 and our exclusive images preview how it could look
15 Oct 2020