Do I need to inform IVA that I've changed car? Head gasket went, so sold the car and brought a new car, it's a bigger engine so more tax, insurance and fuel but should be reliable.

I had a ford focus 2012, 1.0 ecoboost, and its been nothing but problems. Head gasket blow, and was a £2000 repair bill, obviously got no chance paying it on an IVA, so sold the car for spares. Just brought a 2008 BMW 525d, got a very good deal on it with my cousin selling it. It's alot bigger engin...