sentences:  Porsche's first road car to use a V8 engine was the 1978 Porsche 928 coupe.Audi's first road car to use a V8 engine was the 1988 Audi V8 luxury sedan.The first V8-engined Alfa Romeo road car was the 1967-1969 Alfa Romeo 33 Stradale mid-engined sports car, of which 18 cars were produced.