Motorists driving home for Christmas face a postcode lottery at the supermarket petrol pumps. Our exclusive analysis has revealed the cost of filling up a family car can vary by up to £8 across the country.
A Sainsbury's in Frome, Somerset, has been identified as the most expensive supermarket station in the country - charging 141.2p per litre of standard petrol.
In contrast, a motorist who fills up at another Sainsbury's fuel station 170 miles away in Braintree, Essex, is only being charged 126.9p per litre, according to the latest data released by the retailers - which is more than 14p per litre cheaper.
For someone filling up the petrol tank of the average family car, that would be a difference of nearly £8 for the same Sainsbury's fuel.
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