Currently reading: Mercedes must pay damages if it used defeat devices on diesel cars
German federal courts must now determine whether the software in question qualifies as a defeat device

The European Court of Justice (ECJ) has ruled that Mercedes-Benz must pay compensation for its use of unlawful defeat devices if a buyer has suffered damages from their use.

The case was initially brought to the German federal court by the owner of a second-hand Mercedes car who discovered software that reduced the vehicle's exhaust recirculation rate when outside temperatures fell below a certain threshold – thereby increasing NOx emissions.

The use of such devices breaches type-approval rules for emissions and thus the affected vehicles' certificates of conformity issued by manufacturers to buyers, according to the ECJ.

The direct link between the manufacturer and buyer established by that certificate means that European Union member states are required to give affected buyers the right to compensation from the manufacturer when they're breached.

It's now down to the German courts to determine whether the software in question in this case qualifies as a defeat device and whether there is a good reason for its use.

If it's found to breach the the rules and a buyer has suffered damages from their purchase of an affected car, the car maker must provide compensation, added the ECJ ruling.

EU member states must independently determine that compensation if applicable.

Mercedes said in a statement supplied to Autocar: "The ECJ has clearly stated that only the damage actually caused to a buyer is relevant. In addition, there must be an unlawful defeat device, which is disputed in the present case."

The German federal court had previously rejected the original claim for damages, stating that the manufacturer could only be charged if the damage was intentional.

Reuters has reported that a Mercedes spokesperson said the company's vehicles that have been recalled for a software update could still be used without restriction. 

Charlie Martin

Charlie Martin Autocar
Title: Editorial Assistant, Autocar

As a reporter, Charlie plays a key role in setting the news agenda for the automotive industry. He joined Autocar in July 2022 after a nine-month stint as an apprentice with sister publication, What Car?. He's previously contributed to The Intercooler, and placed second in Hagerty’s 2019 Young Writer competition with a MG Metro 6R4 feature

He is the proud owner of a Fiat Panda 100HP, and hopes to one day add a lightweight sports car like a Caterham Seven or a Lotus Elise S1 to his collection.

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Symanski 21 March 2023

After the VW emissions problems you can be sure the German authorities were all over Mercedes and BMW looking for the same, but they never found anything.

 

Which says to me this is something the cars need to do when it's cold.   It isn't a defeat device, but part of the normal operation of the car and allowed.

 

d79m 21 March 2023

Hopefully the Government HMRC has a list of these people as obviously they will be desperate to pay the extra RFL and company car tax back they have been decieved into not paying by Mercedes. 

Saucerer 21 March 2023

Wouldn't buy a Mercedes anyway. They're all about show, glitz and tech nowadays with average interior quality, poor build quality, average powertrains and and average dynamics. All a far cry from when Mercedes built execllent and high quality cars all those years ago, cars which justified their price premium.

jason_recliner 21 March 2023

C-Class and up are still very good. But yeah, below that the Koreans and Japanese are superior.