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Take action now – all of our clients have or will shortly receive a survey about your claim against Mercedes from us – please check your emails including junk/spam folders.

This is an important step in the litigation and is Court ordered. Complete the survey to progress your case to the next stage.

Don’t put off completing the survey – act now!

About the claim

More than 600,000 Mercedes drivers could be due compensation because we believe Mercedes installed special software (known as a ‘defeat device’) in certain Diesel vehicles to cheat emissions tests. If we are right, Mercedes owners were mis-sold cars that are more polluting than the law allows and worth less than the cost they paid. Drivers were sold a combination of environmental impact and driving performance that was a fiction. Unable to meet international emissions standards, these cars should never have been allowed on the road.

Mercedes is accused of using ‘defeat devices’ similar to the ones used by Volkswagen in the Dieselgate scandal. If you’ve been affected, we believe you deserve compensation.

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Why should you join the Mercedes Pay Up campaign?

If you are eligible, our legal action against Mercedes costs nothing to take part in, and is currently the only legal route for drivers who were affected. Anyone who is affected could be due thousands of pounds in compensation.

We believe Mercedes cheated the emissions tests and failed their customers. They knew what the emissions rules were, and they developed software to get around them. It is time to hold them to account.

It costs absolutely nothing to take part in the Mercedes Pay Up campaign.
If eligible, our law firm will take on your case and it will be managed by an exceptional team of top litigators in London.
If successful, each driver could be owed thousands in compensation.

What exactly did Mercedes do, and how did it harm their customers?

We believe that Mercedes installed ‘defeat devices’ in certain Diesel cars designed to reduce emissions levels in a regulatory test environment. The practical effect of a defeat device is that the car can detect when it is in a test environment (because the tests have standard conditions which the defeat device is designed to identify) and tell the engine to reduce the pollutants it is producing in order to pass that test. In doing so, the performance of the car is also reduced.

When the car is in normal driving conditions (i.e., most if not all of the time), it maintains optimal performance, and as a result the vehicle pumps out unlawful levels of NOx and other pollutants without the driver realising. Without passing these tests, the cars would not have been cleared to drive on UK roads and they do not meet the environmental and performance standards promised in the glove compartment handbook.

We believe that these affected vehicles pumped more harmful NOx into the atmosphere than the law allows. Public Health England estimates that NOx is a ‘major component’ of urban air pollution generally, causing up to 36,000 premature deaths per year.

Drivers were sold a combination of environmental impact and driving performance that was a fiction – it could never happen under normal driving conditions.

The cheat software Mercedes is alleged to have used is similar to the ‘defeat’ code deployed by VW, Audi, Skoda and SEAT in the Dieselgate scandal. The VW group has since paid out hundreds of millions of pounds in settlements in the US, Germany and Australia. There is also a group litigation against the VW Group in England & Wales where the trial is due to be heard in January 2023 (known as the VW NoX Emissions Group Litigation). We intend to apply for a Group Litigation Order (‘GLO’ for short) against Mercedes, so sign up to ensure you do not miss your chance to receive compensation!

About the GLO process

The premise of a GLO is simple. The campaign is no win, no fee, so if you sign up and we don’t win in court you pay absolutely nothing.

You and the other claimants will be represented by Milberg London LLP, a global law firm that has vast experience in handling similar claims.

If the legal claim is successful, we guarantee that you will receive at least 50% of the damages awarded to you in compensation. Our legal costs will be paid from the remaining 50% of the damages.

Why Milberg

The Milberg London team has a long track record of fighting tirelessly for the underdog and using every available legal option to hold wrongdoing corporations to account.

We are at the forefront of group action law and practice and instructed in some of the most significant multiparty cases ever to be heard before the courts in this jurisdiction. Uniquely in the legal market, we have in-house scientific expertise such that we are leading both the legal analysis and the expert evidence in relation to several Dieselgate group actions, including against Vauxhall and Mercedes.

Our market-leading legal team regularly goes toe to toe with major corporate defendants and their immense war chests. We make them take our claims seriously.

We can backup this up with our commercial pedigree having been forged in the biggest cases at the biggest firms, as well as having one of the UK’s largest client onboarding centres for fast and efficient engagement of new clients, and the support of our stateside affiliates. But more importantly, the Milberg London team care about promoting access to justice and work hard to minimise the hassle and stress of the legal process for their clients.

You can find out more about Milberg London by visiting their website here.

Meet your legal team

James Oldnall Headshot

James Oldnall

Managing Partner

James Taylor Headshot

James Taylor


Alicia headshot

Alicia Clark


Harry Jacques

Trainee Solicitor

I got in touch with Milberg through a friend. They helped me with a delayed payment from an employer. They were very professional and kept me informed throughout the process. My experience with their service was excellent. I will contact them again if I require legal advice.


Good service and kept up to date

Paul Neil

Excellent in customer relations in assisting me to understand the method of claiming against being miss sold an imperfect product with emission standards not comparable to British values

Thomas Newell

Really efficient good communication. Always aware of what stage we are up to .
Helpful and friendly staff who actually answer the phone.

Mr & Mrs Lyons

Outstanding service

Wayne Barnett

So far this company's dealings with me have been entirely professional and honest. I understand these things take a long time and much information is needed, which I've provided as promptly as possible. No negative experience at all, don't understand where other negative reviews are coming from?

Richard Taylor

Does the recent VW settlement impact my claim against Mercedes?

Not directly. We believe all car manufacturers installed defeat devices differently so the technical case against Mercedes will be different. However, broadly speaking, we believe this settlement is a positive development for all emissions cases in this jurisdiction.

What has Mercedes done wrong?

We believe Mercedes installed defeat devices in certain Diesel cars that were designed to reduce emissions levels in a regulatory test environment. Without passing these tests, the cars would not have been cleared to drive on UK roads. Put simply, we believe Mercedes cheated the emissions tests. The software appears to have identified when the engine was operating under regulatory test conditions and reduced the levels of pollutants being pumped out so it passed the test. But this kind of environmental performance could never be replicated under real life driving conditions. The defeat device Mercedes created is different in its details to what Volkswagen used in the Dieselgate scandal but the effect (and we say, clearly the intention) was broadly the same.

What is a defeat device?

A defeat device is any element of design, software or hardware in a car which detects different vehicle conditions (e.g. temperature, vehicle speed, engine speed etc) and adjusts or disables the car’s emission control system. In the case of Mercedes (and VW and Vauxhall) the manufacturers appear to have written software into the computer unit that controls the engine.


The practical effect of a defeat device is that it can detect when it is in a test environment (because the tests have standard conditions which the defeat device can be designed to identify) and tell the engine it needs to reduce the emissions it is producing in order to pass that test.


By contrast, when the car is outside of a test environment (i.e., most if not all of the time), it recognises that and the vehicle pumps out unlawful levels of NOx and other pollutants without the driver realising.


The reason for using a defeat device appears to have been that the engines in question could not meet the emissions test and produce an acceptable consumer driving experience.

What is the harm to consumers?

Assuming the claim succeeds, drivers that purchased, financed or leased a new or used Diesel Mercedes did so on a false premise and may be able to receive compensation.


These consumers had a reasonable expectation their car would meet certain environmental and performance standards. That’s what they were promised in the glove compartment handbook.


The reality was that the cars were far more polluting than drivers were told. They pumped more harmful substances like NOx into the atmosphere, which are known to cause thousands of premature deaths a year in the UK. Unable to meet international emissions standards, these cars should never have been on the road.


The cars would also be worth less than the drivers paid for them (because Mercedes did not deliver an environmentally compliant car which also met performance expectations) and are worth even less today in the second-hand car market. Drivers were sold a combination of environmental impact and driving performance that was a fiction – it could never happen under normal conditions and Mercedes knew that.


Put simply, Mercedes did not provide the car drivers paid for.

How many UK drivers are affected?

We estimate that over 600,000 UK drivers have purchased or leased a new or second-hand Mercedes during the period when we say Mercedes was cheating the tests. Each of these motorists could be eligible to claim compensation.


We urge drivers to check whether they could be in line for compensation by checking your vehicle and receive a free legal assessment here.

What about drivers who bought their car second hand?

Drivers who bought a second-hand car from a registered Mercedes dealership may be eligible for compensation too. Their losses may be lower than motorists who paid more for a new car.

How much money do Mercedes drivers stand to get in compensation?

This will depend on a range of factors including how much drivers paid for their car and how much harm the Court determines Mercedes caused by its behaviour. Under consumer protection law motorists could recover between 25% and 75% of the price of their vehicle depending on the severity of the misleading or aggressive practice or the difference between the market price of the product at the time of sale, and the price paid.  This could be many thousands of pounds, even for second-hand owners.


Purchasers of affected cars have already been awarded compensation in other countries. Below are some examples of pay outs in similar cases in other countries. Remember, however, that the English Courts are not bound by these decisions and will have to make their own calculation of loss for vehicle owners.


In the US, claimants received between US$5,000 and US$10,000 from VW and between US$822.50 and US$3,290 from Mercedes.


In Spain, VW claimants were awarded €3,000 each. 


In Germany, there has been a large range of awards against VW ranging from €1,000 to tens of thousands of Euros for each claimant (against Daimler/Mercedes, awards of over €40,000 have been given).


In the Netherlands, a court declared that first-hand VW owners were entitled to €3,000 and second-hand VW owners were entitled to €1,500

How will the claim be brought to Court?

This case is being brought via a Group Litigation Order (or ‘GLO’). A GLO is a procedural mechanism that allows lots of claims with “common or related issues” of fact and/or law to be managed together as one case. In February 2023, the High Court agreed this is the most appropriate way to manage the claim and granted the GLO.

The current VW litigation going through the Courts is proceeding under a GLO and Milberg London think it should be used for the Mercedes claim as well.

What progress have the lawyers made so far?

A lot of progress has been made in the last 12 months and there is real momentum. The High Court granted the GLO in February 2023 and Milberg London is in the process of asking it’s 72,000 clients to complete the Schedule of Claimant Information survey as quickly as possible. This is an important step in the litigation and is Court ordered. Please check your emails (including junk and spam folders) and complete the survey to progress your case to the next stage.

What do the customers have to sign up to?

Milberg London are representing their clients through a Damages Based Agreement (‘DBA’). A DBA means all of Milberg London’s fees depend on the success of the case and the level of those fees is determined as a percentage of the compensation recovered. It also provides that a steering committee of representative claimants have authority to instruct the lawyers on behalf of the group. This is because it would be impossible for Milberg London to take instructions from everyone individually.

Do customers have to pay anything from their own pocket?



The lawyers only get paid if there is a win at the end of the case (see above). If the claim is successful, the lawyers are paid from the compensation recovered from Mercedes. If the case is unsuccessful, the customers pay nothing.


Any costs that need to be paid up-front or along the way (e.g. barristers, Court fees and experts) are covered by either Milberg London on a self-funding basis or by a litigation funder. The litigation funder is paid back at the end of the case out of the lawyers’ share of the compensation – not the consumer’s (see below).

Who are the lawyers running this claim, and who is funding it?

The lawyers are Milberg London, part of an international group of firms with significant experience of consumer and group litigation.


Milberg London are self-funding certain aspects of the case with the support of their affiliates in the US. Milberg London have also entered into a funding arrangement with an ALF third party funder.

How often can I expect to get an update on my claim?

Our legal team are working hard behind the scenes to progress your claim and are making good headway. We will endeavour to provide you with regular updates every 6 to 8 weeks with developments happening in your case.


In addition, you can always get in touch with your Case Manager for an update, email [email protected] or call us on 020 3824 6541.

If my vehicle is not eligible, can you explain to me why please?

There are a number of reasons why a vehicle may be ineligible:


  • It was not manufactured within the relevant time period.

  • It is not a model we have identified as being affected by the diesel emissions scandal.
  • We do not have enough information or documentation from you in order to validate your claim.
How long is it going to take?

Unfortunately the wheels of justice turn slowly, and group actions take many years to work their way through the Court system. However, a lot of progress has been made recently. It is possible the case is resolved in the next 24 months. Please stick with us, we believe we will be successful in the end!

What if I have sold the car?

That is not a problem. We believe you still have a valuable claim even though you have sold the vehicle. Your claim and loss will be based on the period you owned the car. You can still join our group.

Legal enquiries

To contact Milberg London please call +44 (0)20 3824 6541 or email [email protected]