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Naurally Aspirated Engine

  • Author :
  • TATA AIG Team
  • Published on :
  • 29/11/2023

The combustion engine is the most integral part of any vehicle. There are different types of combustion engines based on the vehicle type, but one such name is the naturally aspirated (NA) engine.

Unlike turbochargers and superchargers, the NA engine doesn't require the assistance of forced induction systems. These engines have a long history and are known for their responsiveness, soundtrack and reliability. In this blog, we will learn about the naturally aspirated engine.

What Is a Naturally Aspirated Engine?

A naturally aspirated engine, also known as a naturally breathing engine, is an internal combustion engine that doesn't rely on a forced induction system but instead draws normal atmospheric air. Every engine in a vehicle needs to use fuel and air for proper functioning.

So, in naturally aspirated engine cars, when the piston goes down the cylinder during the intake stroke, it creates a vacuum from where the air-fuel mixture enters naturally.

Further, these vehicles have larger displacements as they didn't have additional power offered by the forced induction system. Most vehicle engines are naturally aspirated engines.

Working of Naturally Aspirated Engine Explained

To understand the workings of a naturally or normally aspirated car engine, you need to know that the internal combustion engine produces the energy from the ignition of fuel inside the combustion chamber.

However, atmospheric air or oxygen is necessary in both petrol and diesel engines to combust the fuel. Two methods are commonly used to provide atmospheric air: naturally aspirated and forced induction.

In the naturally aspirated engine, atmospheric air enters the cylinder during the suction stroke. In suction stroke, when the piston goes from the top dead centre to the bottom dead centre, it creates a pressure depression and vacuum inside the cylinder.

At that time, the atmospheric air gets sucked into this vacuum naturally. Since the air is entered naturally, it is called a naturally aspirated engine.

However, in the forced induction type, air enters the cylinder from the external pressure or force.

Key Benefits of Naturally Aspirated Engine

Some of the benefits of naturally aspirated engines are:

Linear Power Delivery- One of the benefits of naturally aspirated engine cars in India is linear power delivery. Since the air entering the cylinder has normal atmospheric pressure, the chance of pressure variation is less or minimal, which makes the linear power delivery. On the other hand, there are chances of initial lag in a forced induction engine.

Cost Effective- Another significant benefit of the naturally aspirated engine is cost-effectiveness. Naturally aspirated engine cars require less maintenance than other engines because of their simple designs. Other than this, naturally aspirated engines for smaller cars require less fuel.

Acceleration- Further, when it comes to igniting the vehicle, the naturally aspirated engine has no lag, so it picks up the steady rise quickly. Further, because of its changing valve timing, these vehicles have high torque at lower RPMs and high torque at higher RPMs without delay.

Simplicity and Durability- Lastly, the naturally aspirated engine car is known for its simplicity and durability. No extra or additional components are present in this engine; they are effortless to maintain. Also, the absence of additional components makes this engine very light.

Disadvantages of NA Engine

Apart from its many benefits, there are some disadvantages of naturally aspirated engines cars, such as:

Poor Engine Performance- A naturally aspirated engine doesn't work well in high-range areas. These kinds of engines require natural air to function correctly. In high-range areas where air pressure is low, the performance of vehicles is affected.

Limited Alteration- Another disadvantage of naturally aspirated engines is that the chance of alliteration is limited. Individuals often make variations in engines to increase the efficiency of vehicles. However, this can't be done in naturally aspirated engine cars.

Less Efficient- Lastly, the volumetric efficiency is lower in naturally aspirated engines, which affects its overall efficiency.

Popular Naturally Aspirated Engine Cars

When it comes to the best naturally aspirated cars in India, some of the fastest cars are on the list. These naturally aspirated engine cars, such as NASCAR and Formula 1, are known in the racing world. Some of these cars are listed below:

McLaren F1- It is one of the exclusive and iconic cars designed by Gordon Murray. It was a limited edition car; only 106 units were prepared. This car is known to be the fastest car, with a speed of 240 mph.

Ferrari 812 Superfast- Another car on the list is Ferrari 812 Superfast, known for its aggressive stance and sleek design. The car can pick up the speed from 0 to 60mph in just 2.9 seconds. Only 1000 units of these cars have been built.

Aston Martin One-77- Another fastest car is the Aston Martin One-77, produced from 2009 to 2012. This car is a limited edition car, and only 77 units of it were built. Furthermore, it can pick up the speed from 0 to 60 mph in 3.5 seconds.

Lexus LFA- Lexus LFA is a Japanese supercar produced from 2010 to 2012. There were only 500 units prepared for this car. The car is known for its driving experience, exquisite design and craftsmanship.

Lamborghini Aventador SVJ- Lastly, we have the Lamborghini Aventador SVJ, another fastest naturally aspirated engine car. The car has a speed of 217 mph and can pick up speed from 0 to 60 mph in 2.8 seconds.

Need For Car Insurance Policy For Naturally Aspirated Cars

Naturally aspirated engine cars in India are the best choice for individuals looking for reliable, simple and affordable engines. But irrespective of the car engine type, having third-party insurance for a four-wheeler is a requirement in India.

Besides this, car insurance policies offer financial protection against various risks such as accidents, vehicle damage, and more. With a comprehensive car insurance policy, individuals can get enhanced protection against man-made things such as vandalism, theft and more, along with natural risks, such as vehicle damage caused by floods, cyclones and more.

We at Tata AIG offer a car insurance plan that can cater to every individual's needs, with add-ons like engine cover, roadside assistance, consumables expenses and more based on their requirement.

Also, individuals can use a car insurance calculator to check the premium based on the coverage. You can easily buy car insurance just a few steps from the website.


Plenty of cars in the market use naturally aspirated engines because of their simplicity and reliability. Because of its more straightforward design, this vehicle engine requires less maintenance than other engines, such as turbo or superchargers.


Why do people like naturally aspirated?

The main reason people like naturally aspirated engine cars in India is its less complex design and less maintenance.

Which is better: turbo diesel or naturally aspirated petrol?

Both engines have their list of pros and cons, and it depends on the individual choice. The naturally aspirated engine relies on atmospheric air, but turbo engines offer additional power.

Is a naturally aspirated engine better?

At lower RPMS and partial loads, these engines have better fuel efficiency.

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