Volkswagen Group has released details of a new part that will be fitted to 1.6 TDI engines to rectify emissions levels defeated by software in the car.
The company has presented details of the technical measures required to resolve the issues for 1.6-litre and 2.0-litre TDI engines.
2.0-litre engines will require a software update, which will take around half an hour of labour time.
For 1.6-litre engines, a new part, a 'flow transformer', will be fitted in front of the air mass sensor, and aims to calm air flow. A software update will also be completed, and the whole process will take around an hour.
The update for the 1.2-litre diesel engine will be presented to the Federal Motor Transport Authority at the end of the month and is expected to be a software update.
The emissions scandal affects 11 million diesel models across the group worldwide, and the company has said that it will take nearly a year to implement fixes to affected vehicles.
The Volkswagen brand will ensure that all customers are offered appropriate replacement mobility options free of charge during the update process.