Raindrops are seen on the badge of a diesel Volkswagen Passat in central London

VW has been forced to defend itself after allegations were made against the German carmaker accusing it of teaming up with other German car giants to breach EU cartel rules.

The company said it was common for car makers to share technical details to help speed up the process of innovation.

Despite its rebuttal of the claims, VW would not be drawn into commenting on specific allegations that it was one of five German car makers colluding on price and technology.

Daimler has also called the accusations speculative.

EU and German anti-trust regulators are looking at allegations that BMW, Daimler and VW, including its subsidiaries Audi and Porsche, collaborated for decades on many aspects of development and production, disadvantaging customers and suppliers.

In a statement, the VW Group said: “It has no comment to make at the present time on details of these issues or on speculation.

“It is quite common for car manufacturers all over the world to engage in an exchange on technical issues in order to accelerate the pace and quality of innovations.”

VW is already facing tens of billions of pounds in compensation and fines after admitting to cheating on diesel emissions tests.

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