I have recently bought new Winter wheels & tyres for my Touran.

I am thinking of changing my car.

Will the new wheels fit a Mazda CX-5 or a Subaru Forrester or a SKoda Yeti?

Possibly the Yeti but I would be surprised if they would fit the other options. You would need to speak to the dealers to confirm.

Even if the wheels fit the tyres may not be the right size.

Sell them on E-Bay and start again if necessary.