We have had the i10 from new. Serviced by main dealer for first three years and this year by a reputable local garage. The Master cylinder has failed, took it to main dealer since car under 5 year warrantee. Main dealer says brake fluid is contaminated and therefore not covered by warrantee and the whole system may have to be replaced at a cost of £4000 - we are awaiting a test on the contaminant. The local garage says this is a ridiculous price and the system could be flushed and only the failed components replaced at a much lower price. What should we do? The repair is more than the value of the car. Your advice would be appreciated.