How can you have VRT on a secondhand Irish car, its already registered. The only way you can have reduced VRT on used cars is with used cars brought in to the country where the VRT has to be paid. After july 1st this will be the case.
However the VW dealer is not been honest, as due the fact that a new VW Passat will have reduced VRT from July 1st and thus be cheaper this will have a trickle down effect on used Passats. To put it simply if a 2 year old passat TDi is currently 27K and a new one is 36K dropping to 33k after july 1st, It would be naive for a dealer to still expect 27K for the older car not only due the gap closing between these 2 cars, but also due the add on of cheaper road tax on a new car. They would have to reduce the price of the 2 year old car and this would reciprocal effect on older cars.
That dealer is been greedy. The fact is dealers at the moment are absolutely choc a bloc with used cars that they cant shift as the wont drop their prices until july.
If your canny go in with a way below cash offer without a trade in and walk away if hes not interested as someone will take your hand off for it soon enough.