Choosing between petrol, diesel, hybrid, or electric in Ireland isn’t just about the car’s price—it’s about long-term running costs. If you're browsing used cars Ireland or checking cars for sale Ireland, this breakdown of real-world fuel expenses will help you pick the most cost-effective option for your driving needs.
1. Petrol Cars: The All-Rounder
Real-World Costs (1.5L Engine, e.g., Volkswagen Golf)
Fuel consumption: 6.5L/100km (urban) / 5.2L/100km (motorway)
Cost per km: ~€0.12 (€1.85/L petrol)
Annual tax: €200-€400
Best for: Low-mileage drivers (<15,000km/year)
✅ Pros: Cheaper to buy, simpler mechanics
❌ Cons: Higher fuel costs than diesel for long distances
2. Diesel Cars: The Mileage King
Real-World Costs (2.0L Engine, e.g., Ford Focus Diesel)
Fuel consumption: 5.0L/100km (combined)
Cost per km: ~€0.10 (€1.75/L diesel)
Annual tax: €600-€1,200 (higher CO2)
Best for: High-mileage drivers (>20,000km/year)
✅ Pros: Better fuel economy for long trips
❌ Cons: Expensive tax, DPF issues in cities
3. Hybrid Cars: The Best of Both Worlds
Real-World Costs (Toyota Corolla Hybrid)
Fuel consumption: 4.5L/100km (combined)
Cost per km: ~€0.08 (€1.85/L petrol)
Annual tax: €180
Best for: Mixed driving (city + motorway)
✅ Pros: Low tax, no charging needed
❌ Cons: Less efficient on motorways than city driving
4. Electric Cars (EVs): The Future, But Is It Cheaper?
Real-World Costs (Hyundai Kona Electric 64kWh)
Energy consumption: 15kWh/100km
Cost per km:
Home charging (night rate): ~€0.02 (€0.15/kWh)
Public fast charging: ~€0.09 (€0.60/kWh)
Annual tax: €120
Best for: Short commutes, home charging
✅ Pros: Lowest running costs, minimal maintenance
❌ Cons: Higher upfront price, range anxiety for long trips
Side-by-Side Cost Comparison (15,000km/Year)
| Fuel Type | Annual Fuel Cost | Annual Tax | Total Annual Cost |
|---|---|---|---|
| Petrol | €1,800 | €300 | €2,100 |
| Diesel | €1,500 | €800 | €2,300 |
| Hybrid | €1,200 | €180 | €1,380 |
| EV (Home Charged) | €300 | €120 | €420 |
Assumptions: Petrol €1.85/L, Diesel €1.75/L, Electricity €0.15/kWh (night rate)
Which One Should You Buy?
✅ Best for City Driving
EVs & Hybrids (Low fuel costs, tax savings)
✅ Best for Long Distances
Diesel (Still cheapest per km for motorway cruising)
✅ Best Budget Used Car
Petrol (Cheapest to buy, simpler maintenance)
✅ Best All-Rounder
Hybrid (Balances fuel economy and practicality)
Where to Find These Cars
🔍 carsforsaleIreland.ie – Compare fuel types easily
🔍 Dealerships – Best for warranties on hybrids/EVs
🔍 Private Sales – More petrol/diesel options under €10k
Final Verdict
Short commutes? EV wins on cost.
Weekly motorway trips? Diesel still has value.
Balanced budget choice? Hybrid is king.
Check used cars Ireland listings now to find your ideal fuel-efficient car!
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Which fuel type works for you? Let us know in the comments!
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