Tailbacks stretching half a mile formed on the approach to a petrol station labelled the "UK's cheapest" by the RAC.
Motorists have been clamouring to fill up at the Shell garage at Trago Mills in Newton Abbot, Devon, where unleaded petrol is on sale at 164.9p a litre.
The price is more than 25p per litre cheaper than the national average of 190.65p, according to RAC fuel watch. Diesel was being sold at the garage on Friday for 181.9p compared to a national average of 198.42p.