Complex sentence: Since the Volvo 850 was introduced in 1991, many Volvos make use of straight-5 engines, often turbocharged and has recently found an application in the Ford Focus ST in which the Ford Focus shares its platform structure with the Volvo S40.
Split into simpler sentences: Since the Volvo 850 was introduced in 1991, many Volvos make use of straight-5 engines, often turbocharged. Volvo engines recently found an applications in the Ford Focus ST in which the Ford Focus shares its platform structure with the Volvo S40.