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CNG vs Petrol vs Diesel

  • Author :
  • TATA AIG Team
  • Published on :
  • 07/12/2023

Buying a car is an exciting experience. Several factors, like price, comfort level, brand, colour, etc., play a crucial role in the purchase decision. However, many buyers often get confused as to which fuel type to opt for.

The fuel in a car greatly impacts its performance, mileage, maintenance costs as well as the environment. Hence, choosing the right fuel option is pivotal when buying a car. In the ever-evolving automobile sector, you can choose between multiple options according to your budget and travel needs.

If you are facing a dilemma regarding which fuel type to choose - CNG vs Petrol vs Diesel - this article is for you. In this article, you will learn the difference between CNG, petrol and diesel and how they can suit varying needs.

CNG vs Petrol vs Diesel

Performance, cost, efficiency and environmental impact are the major points of comparison between CNG, petrol and diesel cars. Here’s a brief discussion on each:

Performance

  • Performance is one of the factors of petrol, CNG and diesel comparison.

  • Petrol cars are known for smooth acceleration and excellent performance.

  • Diesel engines may not provide the same acceleration and power, but they provide good top-end performance.

On the other hand, CNG cars provide the lowest power and acceleration as compared to petrol and diesel cars. This is because their engine is less powerful and small.

Cost

  • The cost of fuel is one of the most crucial aspects to consider before deciding on the fuel type.

  • In India, CNG is the cheapest fuel, followed by diesel and petrol. One of the reasons for the low price of CNG is due to its domestic production.

  • While diesel price is also lower than petrol, the price gap between both fuels has been reducing in recent years.

  • When it comes to running costs, petrol cars are the most expensive while CNG cars are the cheapest.

However, it is also essential to note that CNG cars may involve higher upfront costs since they need modifications to run.

Efficiency

  • Another essential factor to consider when choosing between the fuel types is efficiency.

  • When it comes to petrol vs CNG vs diesel mileage, CNG cars offer the highest fuel efficiency.

  • Diesel cars also provide better fuel efficiency than petrol cars.

Environmental impact

  • Petrol vs CNG vs diesel emissions should be another thing to keep in mind while buying a car.

  • CNG is the cleanest of all the three fuels.

  • Diesel emits the most greenhouse gases since it has a higher carbon content.

However, emissions from a car depend on several other factors, including vehicle age and engine efficiency.

Petrol, CNG and Diesel Comparison

The table below provides a brief understanding of CNG vs petrol vs diesel cars:

Point of comparison  CNG Car  Petrol Car Diesel Car
Fuel price  Low  High  Lower than petrol 
Car price CNG cars are comparatively cheaper than diesel cars but are more expensive than petrol cars  Petrol cars are more affordable than diesel and CNG cars  Diesel cars are more costly than petrol and CNG cars 
Mileage  Higher than petrol and diesel cars Lower than CNG and diesel cars  Higher than petrol cars and lower than CNG cars
Running cost Lowest  High Lower than petrol cars but higher than CNG cars 
Performance  Power output is lower than petrol and diesel cars High performance with good pick-up  Initial acceleration is slow but top-end performance is good 
Engine life  Less than diesel cars and similar to petrol cars  Less than diesel cars  Higher than petrol cars 
Availability of fuel  Fuel is not easily accessible  Fuel is easily accessible  Fuel is easily accessible 
Cost of Maintenance Highest due to the CNG kit  Lower than diesel cars and higher than CNG cars  High 
Boot space  CNG fuel tank takes up the boot space   Capacious  Capacious 
Environmental impact  Does not emit pollutants  Emit pollutants  Emit pollutants 
Driving experience  The driving experience is similar to petrol cars since they run on petrol-compatible engines  Low levels of Noise, Vibrations and Harshness (NVH) offer a comfortable driving experience  NVH levels are comparatively higher than petrol and CNG cars 

CNG vs Petrol vs Diesel Cars: Pros and Cons

CNG, petrol and diesel cars have their own set of advantages and disadvantages that are discussed below:

CNG Cars: Pros and cons

The pros and cons of CNG cars are as follows:

Pros  Cons 
Low running costs  Low performance as compared to petrol and diesel cars 
Offer high fuel economy  No boot space 
More environment-friendly  Fuel accessibility is a hassle  
Petrol compatible engine  Higher upfront and maintenance cost 

Petrol Cars: Pros and cons

The pros and cons of petrol cars are as follows:

Pros  Cons 
More affordable than CNG and diesel cars  High running costs 
Better low-end performance and stable power output  High-end performance is lower than diesel cars
Low maintenance costs  Less torque than diesel cars 
Low NHV levels make the driving experience comfortable  Offer less fuel economy 

Diesel Cars: Pros and cons

The pros and cons of diesel cars are as follows:

Pros  Cons 
Low running cost than petrol cars  Higher price than petrol cars 
Good top-end performance makes them ideal for long journeys  Higher maintenance costs 
Engines have a longer life than petrol cars Higher NVH levels make the driving experience uncomfortable 
Higher fuel efficiency than petrol cars Higher cost of spare parts 

Petrol, CNG or Diesel Car Which is Better?

The purpose of buying a car is different for every individual. Hence, there is no definite answer to this question. All three fuels have their own set of pros and cons. The choice depends on your travel needs, budget, comfort expectations and environmental concerns.

If you need a car for long-distance travel and long-term use, diesel cars offer excellent high-end performance and fuel efficiency. But if you want to buy a car for short-distance travel and daily commuting, CNG cars are ideal. If performance and comfort are your priorities, petrol cars are better options.

It must be noted that petrol cars usually have lower upfront costs, but their long-term running costs are higher than diesel and CNG cars. On the other hand, CNG cars have higher upfront costs, but they are cheaper to drive in the long run.

At last, evaluating petrol vs CNG vs diesel in terms of environmental impact is crucial. If you are concerned about the impact of your car’s fuel on the environment, picking a CNG car is the best option. CNG is the cleanest fuel option, while diesel emits the most pollutants.

Wrapping Up

Now you know the difference between CNG, petrol and diesel cars. Make sure you evaluate the pros and cons of each fuel type before spending your hard-earned money.

And no matter which car you buy, be sure to protect it through a suitable car insurance policy. Buying a four-wheeler insurance is necessary, especially when accidents, natural disasters and crimes are rising.

At Tata AIG, you can buy car insurance with different coverage options at budget-friendly rates. So, compare car insurance plans and pick the one that best suits the needs of your dream car today!

FAQS

Why is CNG preferred over petrol or diesel?

CNG is preferred over petrol or diesel because it is the cleanest of all the fossil fuels. It does not produce any harmful gases like petrol and diesel. Another reason why CNG is preferred over other fuels is due to its low cost.

Which car is safe, CNG or petrol?

CNG cars are usually considered safer than petrol cars. This is because CNG has less flammability and higher auto-ignition temperature. In case of a leak, CNG does not spread like petrol but disperses instantly. This reduces the risk of explosion or fire.

Which is better, CNG or petrol or diesel?

There is no definite answer to this question. All three fuels have their own set of pros and cons. The choice depends on your travel needs, budget, comfort expectations and environmental concerns. CNG is the cleanest fuel that has negligible impact on the environment. It is also the cheapest of the three fuels. However, if performance and comfort are your priorities, petrol cars are better options.

What is the difference between CNG and diesel prices?

CNG price vs diesel price is extremely dynamic and varies from place to place on a daily.

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