Compare the Rover 600 620 Ti - [1994] vs Lexus LS 400 4.0 V8 - [1989]. Find out which car is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which car has the highest top speed or is the fastest accelerating, is it the Rover 600 620 Ti or the Lexus LS 400 4.0 V8. We'll leave it up to you to decide which is your favourite.