Administrators have gone into the Sidlow Group, which has dealerships for Audi, Volkwagen, Seat, Peugeot, Citroen and Alfa Romeo.
Up to 250 employees are believed to have been made redundant at the south of England dealer group, which has ceased trading.
Grant Thornton has been appointed administrator.
Its dealerships included VW Horsham, Seat Gatwick, Audi Gatwick, Citroen East Grinstead, Alfa Romeo Gatwick and Peugeot Gatwick.
It also had a bodyshop at Lingfield.