According to Autocar's sister title The ENDS Report, the money is needed to fund a market surveillance system that will be used to monitor the emissions of production vehicles to prevent a similar case happening again.
Volkswagen has argued that the monitoring process will not be directly related to dieselgate, because it will involve products from all manufacturers, so it can't be expected to foot the bill. The brand has already paid £1.1m towards funding the cost of retesting of existing cars.
“The only formal request for payment made by the UK government in respect of the NOx emissions issue came from the Department for Transport,” said a VW spokesman in an official response. “Initially, the Department requested that £2.1m be paid, composed of £1.1m in fees for historic testing and a further £1m for funding the work of a Market Surveillance Unit.
“Volkswagen paid the £1.1m during late 2016 and explained in November 2016 to the Department that there was no legal basis for the payment of the £1m to fund the Market Surveillance Unit’s future activities, which are unrelated to the NOx emissions issue affecting Volkswagen vehicles.”