Fuel Cost Calculator Ireland

To calculate fuel cost per km in Ireland: divide your car's consumption (litres per 100km) by 100, then multiply by the current price per litre. For example, at €1.779/litre with 7.5L/100km: (7.5 ÷ 100) × 1.779 = €0.133 per km. Use the free calculator above for instant results.

Dublin to Cork is approximately 256 km. At 7.5L/100km and €1.779/litre petrol, the trip costs approximately €34 one way. Diesel (6.2L/100km at €1.699/litre) costs approximately €27 one way. Use the 'Dublin → Cork' preset button in the calculator to get live estimates based on today's prices.

The average Irish driver covers approximately 16,000 km per year (1,333 km/month). At current petrol prices (~€1.779/litre) and typical consumption (7.5L/100km), monthly fuel cost is approximately €178. Diesel drivers pay approximately €140/month. Enter your own figures for a personalised estimate.

At current petrol prices of approximately €1.779/litre, a 50-litre tank costs around €89. A 60-litre tank costs approximately €107. Diesel is cheaper — a 60-litre tank at €1.699/litre costs approximately €102. Use Smart Refuel's map to find the cheapest station near you before filling up.

Yes — LPG autogas is typically 30–50% cheaper per litre than petrol in Ireland. LPG vehicles use about 30% more fuel per km due to lower energy density, but the net saving is still 20–35% on fuel costs compared to petrol. Use the calculator above to compare petrol vs LPG for your specific car and mileage.

Typical fuel consumption: petrol cars 6–9L/100km, diesel cars 5–7L/100km, hybrids 4–6L/100km, LPG vehicles 9–12L/100km. Your car's exact consumption is shown in the vehicle handbook or dashboard computer. Enter your actual figure in the calculator for the most accurate cost estimate.

At current Irish petrol prices (~€1.779/litre), driving 100km costs approximately €12–€16 depending on your car. Diesel costs €9.50–€12 per 100km. LPG costs €8–€11 per 100km despite higher consumption, because of its much lower price per litre. Enter your figures above for a precise calculation.

Top ways to reduce fuel costs: (1) Use Smart Refuel to find the cheapest petrol or diesel near you — prices vary by up to 10c/litre between stations; (2) Fill up at supermarket forecourts (Tesco, Lidl, Dunnes Stores); (3) Drive smoothly — harsh acceleration wastes 20% more fuel; (4) Check tyre pressure weekly; (5) Use Smart Refuel's prediction to fill up when prices are lowest.

LPG autogas is cheapest per litre in Ireland (~€0.879/litre vs ~€1.779 petrol). Diesel is slightly cheaper than petrol per litre and more fuel-efficient. For most drivers who already own a petrol or diesel car, finding the cheapest station using Smart Refuel is the easiest way to save. LPG is only worth considering if you drive 20,000+ km per year due to the €1,500–€3,000 conversion cost.

Select your fuel type (petrol, diesel or LPG), enter the price per litre (or use the national average pre-filled), enter your car's fuel consumption in L/100km, enter your journey distance in km, then choose whether you want a trip, monthly or annual estimate. Hit the Irish route presets for instant Dublin, Cork, Galway journey calculations.

At current Irish petrol prices (~€1.779/litre), filling a 50-litre tank costs approximately €88.95. A 55-litre tank costs about €97.85 and a 60-litre tank approximately €106.74. Diesel is cheaper — a 60-litre tank at ~€1.699/litre costs approximately €101.94. LPG is cheapest — a 60-litre fill at ~€0.879/litre costs only €52.74. Use the tank size field in the calculator above for your exact cost, and the Smart Refuel map to find the cheapest station near you before filling up.

One litre of petrol in Ireland costs approximately €1.779 as a national average today. Prices vary between approximately €1.70 at the cheapest supermarket forecourts and over €1.90 at motorway service stations. One litre of diesel costs approximately €1.699 nationally. One litre of LPG autogas costs approximately €0.879 — the cheapest fuel per litre in Ireland. Use Smart Refuel's map to find the cheapest litre of petrol or diesel near you today.

Use the fuel cost comparison table on this page — it shows the total trip cost for petrol, diesel and LPG side by side for the same distance. For a 100km trip: petrol costs approximately €13.34, diesel €10.53, LPG €9.23. LPG is cheapest despite higher consumption. Over a year (16,000km), switching from petrol to diesel saves ~€450 annually; switching to LPG saves ~€640. The calculator above lets you enter your exact car figures for a personalised fuel cost comparison.