Mercedes-Benz Vehicles

“In September (2019), Daimler was fined €870m by German prosecutors for failing to comply with emissions regulations”


“40,000 lives were cut short by air pollution in the UK”

BBC / Greenpeace

“Daimler will recall 3 million diesel cars across Europe to fix emissions”


Harcus Parker is investigating claims on behalf of Mercedes-Benz owners

Harcus Parker is investigating claims on behalf of owners of Mercedes-Benz vehicles which are alleged to have been fitted with defeat devices, different in form but similar in effect to those used by Volkswagen. Defeat devices allow cars to detect when an emissions test is being carried out, and reduce emissions accordingly. Often, when the cars are driven in the real world, emissions will be many times higher than the regulated limits.

Anybody who has bought or leased a diesel Mercedes-Benz vehicle in England or Wales since 2011 can register their interest to join the claim. Owners could be entitled to several thousands of pounds of compensation.

The litigation will be free at the point of use. Harcus Parker will act on a no-win, no-fee basis, and will pay any third-party costs which are necessary in order to progress the claims to trial.

Register your interest

Why Claim?


NOx is a pollutant which has been linked to an array of diseases including childhood asthma and even teenage psychosis. Recent reports have also indicated a link between those living in areas with poor air quality and people suffering the most severe Covid-19 symptoms. Some independent testing has shown that affected Mercedes vehicles emit up to ten times more NOx than the regulations allow.

The environment

NOx emissions from vehicles tend to be closely related to other emissions, including greenhouse gasses like CO2, and soot. It is difficult to reduce NOx levels without increasing levels of these other harmful emissions. Mercedes has already been ordered to recall and ‘fix’ around 700,000 cars throughout Europe. Potential adverse effects of this measure are not yet known.


When issuing a fine of €870m to Mercedes-Benz’s parent company, Daimler in 2019, a German court took account of ‘gains from the sale of the affected vehicles and saved expenses for the production of vehicles that comply with the regulatory requirements’. In other words, Mercedes is said to have chosen the cheaper route to emissions compliance: it could have engineered its way to a solution, and provided vehicles which were suitable for use in our towns and cities, but instead it cheated.


Consumers could be entitled to thousands of pounds of compensation, if the claims succeed. In some cases damages could be higher. Consumer legislation in the UK provides that in cases where customers have been misled, it is possible to recover a percentage of the purchase price of the product. If the misleading behaviour is deemed to be ‘more than minor’ then the compensation is set at 25%.

Mercedes-Benz Emissions Litigation: If you have owned or leased a diesel Mercedes-Benz since 2011