CNG vs Petrol vs Diesel Cars in 2025 : Already in 2025, Indian car buyers would have a fair share of preference from all types of fuels available in private vehicles-petrol, diesel, electric and CNG. Among these options, it has been observed that, CNG generally has had greater appeal all of a sudden because it is less costly to run CNG vehicles as these vehicles run on compressed natural gas. But how do they actually compare to petrol and diesel cars? We shall try to explain in simplest way.
Running Cost and Mileage
CNG cars should claim an outright win when it comes to running cost. CNG is much less than petrol; therefore, the amount of money that you spend for every km is that much lower. There are many CNG cars which can give you 25-30 km/kg mileage and can be directly used in commuting. Superiority in terms of mileage is the case with petrol, but it is pretty diesel-deprived. Diesel, too, gives fair mileage but one gets the production to be high when on highways and diesel isn’t quite such a low-priced commodity anymore.
Initial Price and Availability
Across the board, CNG cars command an additional cost of ₹80,000 to ₹1 lakh over their petrol counterparts; yet, they are much cheaper than those diesel variants. The ramping up of factory-fitted CNG models by manufacturers such as Maruti, Hyundai and Tata will drastically improve availability. Diesel options are getting thinner-watt, especially in smaller cars, given the stiffer BS6 norms and poor demand.
Performance Experience and Drive
Now coming over to performance, petrol will do it most smoothly and is the best for a long journey-that is, cruising. So, given the conditions, CNG car facilities are good for personal city usage-mostly quiet, neat, but lack some power with full loads or while climbing hills. You would have diesel engines producing really high torque; hence, could move very heavy machines and overtake fast cars on highways, but they are definitely bulkier and noisier polluting the environment than the above two i.e. CNG and petrol.
Maintenance and Engine Life
CNG engines need a little more maintenance than petrol engines, especially in the case of frequent refueling at poorly maintained pumps. However, they run an overall cleaner performance and can prolong the life of the engine under good maintenance. Diesel engines are tough built but require regular servicing, of which maintenance cost tends to increase significantly as time goes by.