Fuel prices vary by up to 13p per litre across the UK, according to the latest data from fuel price aggregator myAutomate.

Drivers in Glasgow face the biggest fluctuations in the cost of fuel with selected forecourts charging 132.9p/litre for diesel at the top end, while other sites were selling it at 119.9p/litre – a 13p/litre variance. Unleaded fuel prices showed the same fluctuations with the difference between the most expensive and the cheapest being 13.1p/litre (130p/litre and 116.9p/litre).

Andrew Watson, co-founder and managing director of myAutomate, said: “The fuel price variations within cities can be stark, but myAutomate aims to simplify the journey for anyone driving a car, van or truck.

“By providing real-time fuel price updates through the myAutomate app, we are enabling drivers to make the smart choices on where to fill up. As we can see in the case of Glasgow alone, it can mean a difference of up to £7.20 per fill, or over £370 a year on fuel when filling up an average 55-litre fuel tank.”

Second to Glasgow is Exeter, which sees a city-wide variation of 11p/litre for diesel and 7p/litre for petrol, while drivers in Norwich could be paying 9p/litre more for diesel and 7p/litre more for petrol by choosing the most expensive forecourts.

Birmingham, meanwhile, sees a notable discrepancy for diesel (6p/litre) and unleaded (5p/litre) with Cardiff rounding out the top five with a 6p/litre and 4p/litre difference respectively.

In addition to providing the latest fuel prices, myAutomate lists more than 12,000 available charging sites for EV and PHEV drivers to locate within the app.

The app also lists car washes by type, as well as car parks with more than 25 spaces.

Accurate and live information means that prices and locations are constantly being updated with new information.