Complex sentence: Its engine is a 1.2 L 34 CV DIN; on its exterior, from the 1982 model on, the engine cover has no vents, being similar to German-produced VW 1200, and Mexican market Beetles sold before 1970.
Split into simpler sentences: Its engine is a 1.2 L 34 CV DIN; on its exterior, from the 1982 model on, the engine cover has no vents. The different engine cover made it similar to German-produced VW 1200, and Mexican market Beetles sold before 1970.