Petrol vs diesel vs CNG vs electric — which fuel should you buy in 2026?
In 2026, the fuel question isn't a binary anymore — it depends on your daily kilometers, parking, city, and how long you plan to keep the car.
The 15,000 km rule
If you drive less than 15,000 km a year, petrol still makes the most sense for most cars. The diesel premium of ₹1–2 lakh takes longer to recover than the time you'll keep the car.
CNG: still the running-cost king
If you have a CNG station nearby and an open boot is OK with you, CNG cuts running cost by 40–50% compared to petrol.
Electric: it depends on charging
Home charging? Electric is fantastic. Apartment parking with no charger? Wait — fast-charging-only ownership still isn't comfortable in 2026 for most buyers.
Use the SirfCar fuel cost calculator to put a number on it for your real driving pattern.
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