THE south west is currently one of the UK's most affordable regions to buy petrol, with a full tank costing 15.46 per cent of the average weekly wage.

A new study by energy experts Boiler Central used data from the ONS and Experian to calculate the cost of 55 litres of petrol as a percentage of each UK region’s average weekly wage.

The south west is the eighth cheapest place to buy petrol out of the UK's 12 regions, with residents paying an average of 184.98 in pence per litre on wages that average £658 per week, while it costs £101.74 for a full tank.

The most expensive place to currently buy petrol is the North East, which has the lowest average weekly wage at £593, meaning that the cost of 55 litres of petrol takes up 17 per cent of the average weekly wage.

London has the highest average cost of petrol, at £102.32 on average, but that takes up just 11.8 per cent of the average weekly wage.