Read on to get a comparison between Petrol Vs Diesel Vs CNG cars so that you can choose the most suitable one for yourself.
Whether the number of personal cars should be reduced to resolve severe air pollution in India has been a heated debate for years. Although it seems difficult to forbid private cars from running on roads, there is another feasible solution: to use a vehicle which is run on a less-emission fuel. Realising the need to use more environmentally-friendly vehicles, many Indian people have chosen to drive CNG or petrol cars, but others still use diesel ones, which are now becoming less popular with Indian auto buyers. Let’s come to a detailed comparison among the three most popular car engines: petrol vs diesel vs CNG-powered cars so that you can make a wise a decision on choosing one for yourself.
A comparison of the three car types can help you make a wiser choice
Before coming to the comparison, ask yourself the below questions:
What do I buy a car for? (to go from home to work and vice versa or to go on an expedition, etc.)
Which type of fuel will help keep my car well-maintained for a long time? (petrol, diesel or CNG fuel)
Which type of fuel will be the most economical for me? (gasoline, diesel or CNG fuel)
With the answers to these questions, you can make a wiser buying decision and a better choice among petrol, diesel and CNG cars.
Fuel Price of Petrol vs Diesel vs CNG
Refer to the table below comparison among the prices of the three fuel types
Fuel rates can vary, depending on the location. Therefore, remember to compare the fuel rates in the same position.
CNG fuel is the most affordable fuel type among the three
Petrol vs Diesel vs CNG: Upfront car price
The upfront cost of a diesel car is roughly Rs 2 lakh than a petrol one, making the former the most expensive car of all. A CNG car is priced around Rs 85,000 – Rs 90,000 more than a petrol-powered car.
Like LPG and propane, CNG too is a short-chain fuel, which has a lesser percentage of carbon as compared to its long-chain counterparts like petrol and diesel.
Diesel fuel contains more energy per litre than petrol and coupled with the fact that diesel engines are more efficient than petrol engines. However, when compared to petrol cars with a catalyst, diesels have higher emissions of NOx and much higher emissions of particulate matter.
Petrol vs Diesel vs CNG: Mileage & Engine Life
Refer to the table below to check the average mileage and running price of petrol, diesel cars and CNG cars in the city.
Average mileage (city)
Rs 2450 pm
Rs 1700 pm
Rs 1100 pm
1000 km / month
Rs 5000 pm
Rs 3400 pm
Rs 2200 pm
1500 km/ month
Rs 7300 pm
Rs 5000 pm
Rs 3500 pm
Rs 1000 pm
Rs 6700 pm
Infrequent driving: If your car runs under 500 km a month (less than 5000 – 7000 km a year), a petrol car will be your best choice.
Average driving: If your car runs 800 km – 1000 km a month (10,000 - 12,000 km a year), CNG will be the most suitable fuel type for your car.
Frequent driving: If your car runs 1200 km – 1400 km a month (15,000 - 16,000 km a year), again, you should choose a CNG car.
High driving: If your car runs over 2000 km a month (more than 20000 km a year), a diesel car is the most suitable as it can help you save a massive amount of money on fuel and maintenance expenses.
Diesel cars would be the best choice for your high-road drive
By now, we have provided you with a detailed comparison among petrol, diesel and CNG cars regarding their fuel price, practicality as well as pros and cons. Have you made your own decision on which type of car to choose? If the answer is yes, let us know your choice in the comment section below. If no, do not rush since buying your travelling partner is as important as buying a house. So consider everything carefully before making the final decision, you will find your ideal car.