Currently reading: Porsche Cayenne diesel sales banned in Germany due to suspect emissions software
German regulators KBA have placed a registration ban on the Porsche diesel SUV following a test on two models

Germany's KBA (Kraftfahrtbundesamt) has placed a registration ban on the Porsche Cayenne Diesel due to the discovery of what it describes as suspect emission manipulation software.

The ban, confirmed by German transport minister Alexander Dobrindt on Thursday, comes after KBA testing revealed the two Porsche models are fitted with software that manipulates CO2 emissions by switching to a so-called warm up strategy mode when it detects they are undergoing testing on a rolling road – the process providing them with a lower CO2 rating than that achieved otherwise.

The Cayenne Diesel and Macan S Diesel both run an Audi-developed and produced turbocharged 3.0-litre V6 diesel engine – the same unit used by Audi in a raft of different models, including the Audi A4, Audi A6, Audi A8, Audi Q5 and Audi Q7In the Cayenne Diesel, the Audi V6 diesel develops 262bhp and is claimed to return 6.6L/100km (42.8mpg) on the combined European consumption test cycle for average CO2 emissions of 173g/km.

As well as placing an immediate ban on the registration of the Cayenne Diesel, the KBA has also order a recall of up to 22,000 vehicles already sold in Germany.

The Cayenne registration ban comes after tensions between Porsche and Audi were strained following comments made by Porsche union boss, Uwe Hueck, on Monday.

In a pointed attack on Volkswagen sister company Audi, Porsche’s Hueck said: “We feel deceived by Audi. The supervisory board should fire the management."

Porsche released the following statement: "Porsche has detected irregularities in the engine control software during internal investigations and has actively pointed this out to the Kraftfahrtbundesamt (KBA), German Federal Motor Transport Authority. The irregularities are not related to the transmission control software. Corrections by means of a software update within the scope of a recall were agreed with the authority.

"Regardless of the recall, Porsche continues to carry out internal audits on its vehicles and derive optimizations from them. Furthermore, the company is still in close contact with the authorities, in particular the German Federal Motor Transport Authority, on all current matters."

Read more on the ongoing emissions scandal:

Unfixed Dieselgate-affected Volkswagens to be deregistered in Germany 

German car industry under EU cartel investigation


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Car review

Porsche's 'junior Cayenne' promises and delivers on its dynamic and performance prowess to be be the most sporting SUV of its size. However, the market has changed with the newrivals threatening to challenge the Macan's crown, so does it have the stomach for a fight?

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armstrm 1 August 2017

Whilst deliberately cheating

Whilst deliberately cheating tests is obviously deplorable, there is a complete over-reaction to diesel cars. The emissions are sometimes quoted as being 40 times higherthan they should be, but 40 times a tiny amount is still a very small amount. Cars are under the microscope whilst cruise ships, container ships, airliners and many other highly polluting vehicle types seem to be totally ignored by politicians and the public alike.

tonylathes 28 July 2017


Meanwhile, the single daily movement of large jets at a single German airp[ort puts out for in the way of emmissions than all the cayenne diesels put together......



405line 28 July 2017

Just helped to sink the motoring industry in any case

Roll eyes....I thought the notion of untruths regarding this group had already been established.