On 6 October 2025, one of the biggest consumer trials in UK history begins. The High Court in London will finally put Mercedes, Ford, Renault and several other car manufacturers in the dock over allegations that they cheated emissions tests by installing illegal “defeat devices” in diesel cars sold between 2008 and 2020. This is not just another corporate scandal – it’s a once-in-a-generation legal battle that could see billions of pounds paid back to ordinary drivers, and potentially open the door to criminal accountability for those who signed off on the deception. The clock is ticking: with just days to go, consumers can still join the group action, and with recent global precedents of huge payouts and even prison sentences for executives, the stakes could not be higher.
The UK countdown to trial and consumer action
All eyes are now on London. The NOₓ Group Litigation is set to begin in just a matter of days, with the first joint trial opening on 6 October 2025. The question at the heart of this phase is simple: did manufacturers like Mercedes, Ford, and Renault fit illegal defeat devices in millions of British cars? If the answer is yes, the consequences will be enormous.
Already, the High Court has handed claimants significant victories. Judges have rejected attempts by manufacturers to rely on foreign regulatory approvals to dismiss the case. They have also forced companies to disclose previously redacted internal documents, tearing down the wall of secrecy that automakers tried to hide behind. These rulings suggest the court is taking consumer claims seriously and is prepared to dig deep into the evidence.
Should the trial confirm that defeat devices were used, a second damages trial in 2026 will determine exactly how much compensation manufacturers must pay. Given what has happened abroad, it is not unreasonable to expect billions of pounds in payouts. For UK drivers, that could mean thousands in compensation per vehicle.
Importantly, there is still time to act. Claimants can continue to join the group action even as the trial approaches. Signing up now ensures you are part of what could be one of the largest consumer compensation payouts in UK history.
Financial compensation abroad: billions already paid out
If history is any guide, UK drivers could be in line for significant compensation. Around the world, Dieselgate has already triggered some of the largest consumer settlements in history, with ordinary people walking away with thousands of pounds in damages.
The United States set the tone. Volkswagen, the company at the heart of the original scandal, agreed to an eye-watering settlement package worth over $30 billion. That figure covered fines, vehicle buybacks, repairs, and direct consumer compensation. American drivers weren’t just offered vague apologies or quick fixes; many were given the option of selling their cars back to VW for a full refund, plus cash on top. It was a clear message: cheat consumers, and you’ll pay dearly.
Germany followed suit with its own compensation structure, albeit on a slightly smaller scale. Courts there ruled that owners of affected cars could claim back between 5% and 15% of the purchase price, depending on how much the vehicle had been used. While these payouts were lower than the American windfalls, they still meant thousands of euros returned directly to the pockets of car buyers who had been misled.
Elsewhere in Europe, compensation has been uneven but growing. In August 2025, the European Court of Justice ruled that manufacturers must pay damages if defeat devices are proven, though it allowed national courts to reduce awards depending on mileage or to cap them at 15% of the purchase price. That ruling has already shaped litigation in France, Spain and Italy, where consumer groups are pushing hard for collective settlements.
Taken together, these global precedents show a clear pattern: when the truth comes out, carmakers pay up. For British drivers, the upcoming High Court trial could unlock similar sums. With over 1.5 million claimants already signed up, and billions potentially at stake, there’s still time to join and claim your share. Look out for the buttons throughout this blog – every day you delay is another day the manufacturers keep hold of money that could be yours.
Criminal convictions: recent prison sentences raise the stakes
It’s not just about money. Around the world, executives have found themselves in handcuffs over Dieselgate. The most striking example comes from Germany, where prosecutors have pursued company directors with an aggressiveness rarely seen in corporate scandals.
In a recent ruling from May 2025, four former Volkswagen managers were convicted of fraud in Braunschweig. Sentences ranged from suspended terms to one executive receiving more than four years in prison. These convictions sent shockwaves through the industry. For years, it had been assumed that top-level executives would escape personal consequences, hiding behind corporate fines and shareholder settlements. Germany proved otherwise: individuals could, and would, go to prison.
The United States also demonstrated that directors were not untouchable. In 2017, Oliver Schmidt, a mid-level Volkswagen executive, was sentenced to prison for his role in covering up the deception. While most of the company’s senior leadership managed to avoid prison due to jurisdictional challenges, the case showed that authorities were willing to go after individuals, not just the companies they represented.
In contrast, France and other European jurisdictions have moved more slowly, with investigations dragging on and little to show in terms of convictions. But the recent German sentences highlight a growing willingness to hold decision-makers accountable. For consumers in the UK, this raises a tantalising question: could British directors one day face similar criminal exposure if the courts find that defeat devices were knowingly approved and installed?
Why this matters for every consumer
The Dieselgate scandal isn’t just about cars. It’s about trust, accountability, and the power of ordinary people to hold global corporations to account. Around the world, drivers have already forced automakers to pay billions. In Germany, they didn’t just win money – they saw executives sent to prison. In the U.S., consumers achieved some of the most generous settlements ever seen in corporate litigation. And now, the UK is poised to make its mark.
This isn’t just history repeating itself – it’s history in the making. With the trial starting on 6 October, drivers across the UK have a once-in-a-lifetime chance to claim what they’re owed. Billions are on the line, and the window to act is closing fast. The companies have already fought to hide documents and minimise costs, but the courts have sided with consumers. The momentum is on your side.
If you own or previously owned a diesel vehicle from Mercedes, Ford, Renault, or other affected manufacturers, the message is clear: act now. Click the buttons in this blog, join the group action, and ensure that you get your share of compensation. The manufacturers have deep pockets, but justice only works if consumers step forward and claim it.
The countdown has begun. On 6 October 2025, the courtroom doors will open. Billions of pounds and the reputations of some of the world’s biggest carmakers hang in the balance. Don’t watch from the sidelines – be part of it.
