The dreaded MoT is fast approaching for my much loved twenty-year-old Audi TT Quattro. I have a nasty feeling both the catalytic converters have or are about to expire. In the winter months, I get a lot of white condensation from the tailpipes all the time even when warm, accompanied by the strong smell of petrol fumes. This has been a brilliant fast, safe and reliable car which is now worth peanuts. It has covered 95k with a full-service history, overall the bodywork, interior etc are in excellent order. Should I bite the bullet and pay for the repairs? If the worst happens, what other pocket rocket can I buy with a tiny budget of £2k max?