Volkswagens' offer is valid for old diesel cars with Euro 1 to Euro 4 engines. Subsidies will not be unified, but will depend of the car, which owner wants to buy from 10.000 euro subsidy for the new Touareg to 2.000 for Up!. Other brands from Volkswagen Group will also offer incentives: Audi from 3.000 up to 10.000 euro (only for buyers of PHEV e-tron and CNG powered g-tron models), Škoda up to 5.000 and Seat up to 8.000 euro.
Porsche is also not missing out. Future Porsche owners, who consider abandoning old diesel, will be offered 5.000-euro subsidy. However, Porsche's offer is not limited to Germany only, as it is available through EU. Daimler has similar scheme and offers 2.000 euro to drivers, who decide to trade in their old diesel car for new diesel or plugin hybrid car, and BMW offers subsidies to those who opt for new electric car.
And of course: state and local subsidies also apply, so in some countries buying en EV or PHEV could become really easy.