Fuel contamination riddle continues - Our fuel is clean, says Tesco

A spokesman for Tesco said: 'As soon as we were alerted to a potential problem, we carried out extensive tests on current and past batches of unleaded fuel, including from some of the affected vehicles, and so far we have not discovered any abnormalities or contamination whatsoever.

'While we cannot currently trace any problem back to Tesco fuel, we will of course continue to work urgently with our supplier to identify what might be behind it. If we discover any problem with our fuel, we will inform customers immediately and act quickly to put it right.'