Ian Royle helps Sherry find her ideal car, as they'll be taking a look at a 1990 model Mercedes-Benz SL500, to find out what it's performance, handling and practicality is like. Despite it's age, these much sought after cars keep well even after clocking up some considerable miles. The SL500 comes with a powerful 5.0 litre V8 engine which produces 300bhp.