Hi Edeline,

Assuming you're asking this as the car is registered as a commercial vehicle, then its motor tax, when taxed privately, will be determined by its engine size, regardless of its age. You've not told us which year you mean, but the current model, for example, comes with either a 2.0-litre or a 2.2-litre engine. The former would cost €710 per year to tax and the latter €951. If it's not registered as a commercial, its tax rate will be determined by its CO2 emissions rating. 

Shane O' Donoghue - 24-Jan-2021