Petrol vs diesel vs hybrid vs electric: cost calculator
Total cost of ownership with your mileage and today’s prices. Shows when a pricier car pays back.
Diesel vs petrol: which is cheaper for your mileage?
The old rule was “diesel if you drive a lot”. It really depends on the purchase price, real consumption and what each litre costs today. Enter your figures to see which is cheaper and from how many kilometres.
Result
Total cost depending on how many years you keep it (same resale %)
Today’s prices
The tool starts with Spain’s official averages today: diesel 1.864 €/L, petrol 95 1.667 €/L (10/11/2026 10:36:01). If you live elsewhere, type your local prices.
What decides the result
- Annual mileage. Diesels usually burn fewer litres per 100 km; the more you drive, the more that saving weighs against an often higher purchase price.
- Price gap. If the diesel costs more, the calculator shows how many years and kilometres it takes to recover it.
- Driving pattern. Modern diesels have a particulate filter that needs longer trips to regenerate. If you mostly drive in town, account for it in maintenance.
- Low-emission zones. City access rules increasingly depend on emissions class; check your local rules.
Limitations
- Today’s prices are used for every year; it does not forecast them.
- Starting car values are examples, not real models.
- No financing or inflation.
Also considering hybrids or EVs? Compare all six powertrains in the EV vs gas cost calculator.
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