This week's petrol and diesel prices in Northern Ireland and the Republic of Ireland, side by side, plus a calculator that tells you whether the trip is worth it once you count the driving and any card fees.
Towns near the border
Estimated saving or loss on a 50-litre fill if you drive from the town centre to the border, using each town's own average price, your fuel choice above, 50 mpg and no card fee. Distances are rough road estimates.
| Town | To border | Local price | Net on 50 litres |
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How we work it out
The fuel saving is the difference between the NI price you'd otherwise pay and the Republic of Ireland average, multiplied by your fill-up. We take off the cost of driving to the border and back, estimating road miles from your distance and using your car's miles per gallon, and any card fee on the euro amount. It doesn't include your time.
Republic of Ireland prices are the national average from the European Commission's Weekly Oil Bulletin, converted at the European Central Bank's reference rate. Prices at individual forecourts, especially near the border, can differ.
Frequently asked questions
Is diesel cheaper in the Republic of Ireland?
Often, yes. Diesel in the Republic has been noticeably cheaper than the Northern Ireland average for much of 2026, while petrol has been much closer. The figures at the top of this page update every week, so check them before you set off.
Is it worth driving over the border for fuel?
It depends on how far you live from the border, how much fuel you buy and whether your card charges a fee for paying in euro. Use the calculator on this page: it takes off the cost of driving there and back and any card fee.
Can I bring fuel back in cans?
Keep it to your car's own tank. Carrying extra fuel in containers has safety rules and can make you liable for duty. Check HMRC's guidance if you're unsure.
Why are prices different on each side of the border?
Fuel duty and VAT are different: the UK charges fuel duty plus 20% VAT, while the Republic charges excise duty, carbon tax and 23% VAT. Exchange rates and local competition also play a part.
How accurate are the Republic of Ireland prices?
They're the Irish national average from the European Commission's Weekly Oil Bulletin, converted to pounds at the European Central Bank's latest rate. Forecourts near the border can be cheaper or dearer than the national average.