Complex sentence: Mike used a French-registered silver Toyota Corolla Verso when he returned to buy the Citroen 2CV in series 11a.Then Fourth Time Mike went to France he rented a French-registered grey Audi Q3 to purchse the Citroen HY Van.
Split into simpler sentences: Mike used a French-registered silver Toyota Corolla Verso when he returned to buy the Citroen 2CV in series 11a. When he returned to France in series 12b, he rented a French-registered grey Audi Q3 to purchase the Citroen HY Van.