Complex sentence: The K70 was replaced in 1973 by the Audi-based Volkswagen Passat, although it continued in production until February 1975, by which time Volkswagen had produced 210,082 K70s before the car was withdrawn from sale in February 1975.
Split into simpler sentences: The K70 was replaced in 1973 by the Audi-based Volkswagen Passat. In total, Volkswagen had produced 210,082 K70s before the car was withdrawn from sale in February 1975.