Live petrol, diesel, home heating oil, and green diesel prices across County Mayo, updated in real time by drivers across Ireland. From Castlebar and Westport to Achill Island, Ballina, and the remote north Mayo coast.
As of , the FuelWatch national average is approximately €1.73 per litre for petrol and €1.71 per litre for diesel. Prices at individual forecourts in County Mayo vary around the national average — the cheapest and most expensive station in the same area can differ by 10 to 15 cent per litre, so checking the live price map before you fill up usually pays for itself. Figures last reviewed 2 July 2026.
County Mayo is one of the largest counties in Connacht by land area, and its varied geography creates a genuinely uneven fuel market. Castlebar, the county town, sits at the junction of the N5 (Dublin to Westport), the N60 (to Roscommon and Athlone), and the N84 south to Galway. It has the densest concentration of forecourts in the county. Westport, a busy tourism hub on the coast, has its own competitive local market driven by visitor footfall and the coastal cruise and ferry trade.
The N17 north to Sligo is a significant route through Swinford, Charlestown, and Tubbercurry. Ballina, Mayo's largest town by population, has good fuel provision on the N57 and N26 approaches. These northern towns serve both local residents and traffic heading between Galway and the northwest.
North and west Mayo are a different situation. The drive from Castlebar to Belmullet on the Mullet Peninsula (about 100 km northwest) passes through Crossmolina, Bangor Erris, and a long stretch of blanket bog with very few stations. Achill Island, connected by a bridge to the mainland at Achill Sound, has a handful of local stations that serve the island's residents and a large summer tourist population. Prices at the island's extremities reflect the logistics of island supply.
Agriculture is a major driver of fuel demand across Mayo. The sheep and cattle farms of the Nephin range, the Moy valley, and the plains of south Mayo all require green diesel. Home heating oil is almost universal in rural Mayo outside Castlebar and Ballina town centres.
Station data © OpenStreetMap contributors.
Open FuelWatch to see live petrol and diesel prices at stations near your location, updated in real time by drivers as they fill up. Planning a trip out to Achill or Belmullet? Fill up in Castlebar and check what is available further out before you go, then report prices at stations you pass.
Open FuelWatch and zoom to your location. Castlebar has the most competing forecourts. In remote areas like Belmullet and Achill Island, far fewer options exist so checking before you leave the main towns is advisable.
Yes. Achill Island stations and those in remote north Mayo like Belmullet face higher distribution costs and fewer competitors. Live FuelWatch prices from these areas, updated in real time by drivers, help others set realistic expectations and plan accordingly.
Yes. Home heating oil is the dominant fuel for rural Mayo homes. FuelWatch's Home Oil layer covers kerosene depots serving the county, including routes through north and west Mayo where oil delivery logistics are more complex.
Work out exactly what a journey or a full tank costs, compare prices by brand, or check which way the national average is moving.
Check fuel prices in counties bordering Mayo or browse the national map.