Complex sentence: The Ford, Opel, VW, Audi, and Renault were available with optional AWD at the time, but the Renault had AWD only on turbocharged engines, and the wagon was called the Nevada/Savanna.
Split into simpler sentences: The Ford, Opel, VW, Audi, and Renault were available with optional AWD at the time. The Renault had AWD only on turbocharged engines, and the wagon was called the Nevada/Savanna.