Complex sentence: The P160 debuted at the 1971 South African Grand Prix but only one was entered for Pedro Rodríguez but retired with Overheating, switzerland's Jo Siffert drove the P153 in South Africa but drove the P160 for the rest of 1971.
Split into simpler sentences: The P160 debuted at the 1971 South African Grand Prix, but only one was entered for Pedro Rodríguez but retired with overheating. Switzerland's Jo Siffert drove the P153 in South Africa but drove the P160 for the rest of 1971.