Fuel Prices Ireland – Week of 18 May 2026
Overview
Hey there, fellow road‑trippers and commuters! If you’ve been scoping out fuel prices Ireland this week, you’re in the right place. For the week of 18 May 2026 the national average diesel sits at €1.94 per litre, while unleaded (petrol) is €1.84. Those figures come from 281 stations we’ve been tracking across the island, giving you a solid snapshot of what to expect at the pump.
National Averages at a Glance
- Diesel: €1.94 / l (up 2 cents from last week)
- Unleaded: €1.84 / l (steady on the day)
While the numbers are still higher than they were a year ago, there are pockets of savings if you know where to look. Below you’ll find the cheapest diesel Ireland and petrol deals for the current week.
The 5 Cheapest Stations Right Now
| Station | County | Diesel | Unleaded |
|---|---|---|---|
| Mulhern’s Service Station (Applegreen) | Mayo | €1.63 | €1.74 |
| Emo Noonan’s Athy | Kildare | €1.79 | €1.84 |
| Kenny Fuels | Wexford | €1.79 | – |
| Certa | Meath | €1.79 | – |
| Inver Limerick | Limerick | €1.80 | €2.00 |
Mulhern’s in County Mayo is leading the pack with diesel at €1.63 and unleaded at €1.74—a full 31 cents cheaper than the national diesel average. If you’re travelling through the midlands, a quick stop in Athy could save you a few cents on both fuels.
Tip: When you’re on a long journey, map your route to include one of these stations. The extra kilometres travelled are often offset by the lower pump price.
Counties Offering the Best Deals
Looking at the broader picture, some counties consistently deliver lower prices than the national average:
- Co. Mayo: Diesel €1.84, Unleaded €1.82 (4 stations)
- Co. Laois: Diesel €1.89, Unleaded €1.84 (1 station)
- Co. Meath: Diesel €1.89, Unleaded €1.81 (8 stations)
These three counties rank as the cheapest for diesel, while Meath also edges out other regions on unleaded. If you live or work in Dublin, you’ll notice the average sits at €1.95 for diesel and €1.84 for unleaded—slightly above the national mean, reflecting higher demand in the capital.
Practical Advice for Irish Drivers
- Plan Ahead: Use the FuelCompare.ie website or the FuelCompare app to check live pricing before you set off. Prices can shift within a day, especially after a bank holiday.
- Combine Stops: If you need to refuel both diesel and petrol (e.g., you have a car and a van), look for stations that list both fuels beneath the national averages—Mulhern’s ticks that box.
- Watch the Margins: A difference of 5‑10 cents per litre may not sound huge, but over a 50‑litre tank that adds up to €2.50‑€5.00 each fill‑up.
- Consider Loyalty Schemes: Some forecourts offer discounts for repeat customers or app‑based payment, which can shave off an extra cent or two.
- Stay Updated: Fuel prices are influenced by global oil markets, exchange rates, and even seasonal Irish demand. Keeping an eye on the weekly trends helps you decide whether to fill now or wait for the next price dip.
How to Stay Informed
The easiest way to keep tabs on petrol prices today and tomorrow’s diesel rates is through the FuelCompare app. It pushes real‑time alerts to your phone, highlights the nearest cheap stations, and even lets you set price‑watch thresholds. If you prefer a browser, FuelCompare.ie offers the same data with a clean, searchable map.
Bottom Line
While the national averages sit at €1.94 for diesel and €1.84 for unleaded, clever drivers can still shave off a few cents by targeting the cheapest diesel Ireland spots in Mayo, Kildare, and Meath. A little planning, a quick check on FuelCompare, and an eye on county‑wide trends will keep your wallet a bit fuller for the next round of road trips.
Ready to never overpay for fuel again?
Download the FuelCompare app today, set your price alerts, and let the savings roll in every time you hit the pump. Safe travels!