which one?

A question about : which one?

I am intending to use some of my savings to purchase a car.

Would I be best using my current account money with IF which offsets my mortgage (mortgage rate currently 6.1%apr) or my ISA with nationwide (currently 4.85%pa)? Does it matter?

Any advice would be appreciated.

Thanks.

Best answers:

• Use a 0% credit card (depending on how much the car is, the credit limit, and that the seller accepts plastic).
  You could then either continue with the 'tarting' and move your debt onto the next 0% CC, or repay the debt. Your choice.
  cloud_dog.