BERLIN -- Volkswagen said it will present a plan in the coming days for how it will fix vehicles affected by the diesel emissions scandal, as EU nations stepped up scrutiny of diesel cars sold by the automaker - including VW brand, Audi, Skoda and Seat cars.
VW will notify customers and relevant authorities of its plans, company spokesman Peter Thul said.
In VW's home market of Germany, where 2.8 million of the 11 million affected diesel cars are on the road, the government's transport agency, the KBA, has set an Oct. 7 deadline for the company to present a plan to bring diesel emissions into line with the law, Bild newspaper reported.
If VW fails to satisfy the authorities, the KBA will withdraw type approval for the cars involved, which means they can no longer be sold or driven, Bild said.
A VW spokesman said: "It is in our strongest interest to provide clarification here as soon as possible. We will inform the KBA about what we are doing and the talks are occurring on the highest level."
VW has said that irregularities on diesel-emissions readings extend to 11 million vehicles globally with Type EA 189 engines. Most of these cars were sold in Europe though reports have said that the manipulated software may not have been activated in all the vehicles.
Countries around the world have launched their own investigations into VW Group's diesel cars.
France said it will carry out testing on its roads to establish whether vehicles are equipped with banned software of the kind used by VW.
Italy will test 1,000 cars from all the VW brands sold nationally, its transport minister said. VW's Italian unit has told its dealers to stop selling cars that it built with the affected engines, Italy's Corriera della Sera newspaper reported on Sunday. It said that would leave 40,000 cars stuck on Italian lots.
In Belgium, VW's distributor, D'Ieteren Auto, said it has stopped the commercialization of vehicles potentially fitted with the non-compliant software. This concerns diesel vehicles with the EA 189 engine (EU 5 standard) and with a displacement of 1.2 liters, 1.6 liters and 2.0 liters, for the VW, VW Commercial Vehicles, Audi, Seat and Skoda brands. The decision affects 3,200 vehicles in stock for the Belgian market, D'Ieteren said.
The Swiss authorities have said they are suspending sales of Volkswagen diesel vehicles that could contain devices capable of cheating emissions tests. Volkswagen's Swiss distributor AMAG said on Monday that 128,802 group vehicles registered in the market are affected by the emissions testing scandal. AMAG said the affected models were from Volkswagen, Audi, Seat, Skoda and VW commercial vehicle brands.
UK Prime Minister David Cameron refused to be drawn on whether the UK will follow Switzerland's lead and ban the sale of some of the beleaguered company's diesel vehicles. The UK's Department for Transport is re-running vehicle tests and investigating the regulatory failure that allowed VW to use "defeat" devices to conceal high emissions, it said in a statement on Thursday.
As many as 91,000 VW vehicles could be affected in Denmark, a company spokeswoman said on Monday.
"We have not received chassis numbers yet, so we can neither look up the car nor contact customers yet, but we are working on this," Sos Ilum from Volkswagen Denmark said.
Ilum said the cars would not be recalled, but that customers will be offered technical or software updates.
Danish transport minister, Hans Christian Schmidt, has requested the head of Volkswagen Denmark, Ulrik Schonemann, brief the government on the case.
VW said there had been no instructions from company headquarters in Germany to dealers to stop selling the affected cars, but sales units in individual countries had the right to take such decisions on their own.
Bloomberg and Reuters contributed to this report