My 1.2 16v 2001 plate has been of the road now for 3 weeks! My local auto electrician diagnosed an ECU fault and said I would have to take it to Renault! I did and the dealer has said I need a new ecu at a cost of £688 including VAT and fitting. Is this a good price??! I have only covered 30,000 miles why has it failed so soon! Any thoughts?