I have noticed that car dealers often want to contract out of the CGA when selling a vehicle to a business.

My research suggests that they can actually only do so and expect it to stick if the goods supplied are not such as would not normally be supplied for personal use (for example dental equipment). Cars etc are commonly supplied for personal use so clearly they would (it seems) not in fact be excluded.

The question arises in my mind as to whether it matters if you sign the clause in the sale agreement that says the CGA does not apply or not. I read that the the CGA trumps the written agreement in the event of a dispute - or at least has the capability to do so if the deciding authority wishes it.

How do others who buy work vehicles for their companies handle this? Clearly new vehicles have manufacturer warranty which covers the first two or three years etc but what about later?