I hade a mate with the same prob, he got a vn commy from a car yard it come with 6 mounths warranty. That night driving around he got a defect for Rear lights tinted, Low,no interiour light,loss seat and no clamps every 600mm for amp cable. He took it back to the car yard and hade them pay for every think to get fix As by law car yard cant sell non road worthy cars. Only thing he hade a prob with is getting the parts back that they chang to get it road worthy. So might be easy for you to change them your self. Its all a c**t but the fine print on the papers is what get's ppl
Good luck
Dave