I have an E36 M3. It’s a wonderful car that I have always maintained, money no object, but she now has 170,000 miles on the clock and has recently had one or two sizeable bills. It’s difficult to know whether the car has gotten to the point where I am throwing good money after bad. Should I think about replacing her and if I do what could I buy apart from another M3, that would give so much driving pleasure, for less than £15,000?