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Who is responsible for causing 'fuel gloop' in my Hyundai i40?

My 14-month-old Hyundai i40 'died' on my way to work on 17 January. There followed a long saga of recovery and the problem was finally diagnosed as frozen water content in the fuel, which turned the diesel to gloop and blocked the fuel filter. My dealer says this is a fuel related problem so not covered by my warranty. I am not sure whether to complain to Tesco for selling diesel containing water, or Hyundai for fitting a car with a filter that cannot be used in the winter. The bill was £109 and I am now worried about driving the car if it becomes very cold again. Your advice?

Asked on 2 March 2013 by SR, Colchester

Answered by Honest John
Nothing to do with the car and everything to do with the fuel. We had been having a mild winter so some fuel companies did not bother adding anti waxing to diesel.
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