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HomeLatest Car NewsCan BS6 Petrol Engines Replace BS6 Diesel Engines?- The BS6 Effect!

Can BS6 Petrol Engines Replace BS6 Diesel Engines?- The BS6 Effect!

The new BS6 emission norms are rolling out in a couple of days. It would have been the shift of the century as the new emission norms are way cleaner than BS4. But the novel coronavirus has led the county into a complete nationwide lockdown. Still, the new norms will be coming into power from 1st of April. The Supreme Court has extended the sales of BS4 vehicles with some conditions.

Consumers still have a lot of questions. After many companies like Maruti Suzuki, Renault, Nissan, Volkswagen, etc. pulling the plus on diesel engines can petrol engines completely replace diesel engines?

BS6 Petrol Engines VS BS6 Diesel Engines
BS6 Petrol Engines VS BS6 Diesel Engines

Why companies pulled the plug on diesel in India?

The new BS6 emission norms are cleaner by more than 50%. The internals of BS4 diesel engines is different than BS6 diesel engines. A lot of research and development went into the new Diesel engines. Some of the changes include.

  • The exhaust system is added with an additional layer in the catalytic converter.
  • The next addition to the exhaust system is the DPF (Diesel Particulate Filter) to filter out the soot and particulate matter from the exhaust gasses.
  • In Addition to that an SCR (Selective Catalytic Reduction) in order to reduce the NOx (Nitrogen Oxides)
  • The Fuel pump along with the injectors was also developed in order to run the new BS6 Diesel. The new Diesel fuel contains reduced amounts of Sulphur.

All these changes drastically increased the manufacturing cost of the vehicle. In turn, increasing the overall price of the car. Earlier too the prices of the Diesel vehicles were more as compared to that of their petrol counterparts.

Can Diesel Engines be Replaced by Petrol Engines

To understand and answer the question we need to dive a bit deeper into petrol and diesel engines.

Difference on the Basis of Air Induction
  • Current petrol engines come in two configurations in India. Naturally aspirated and turbocharged petrol engines.
  • On the other hand, the diesel engines come only as Turbo Diesel engines.
Difference on the Basis of  Power and Torque
  • The naturally aspirated petrol engines can compete with diesel in power but the power is delivered at higher RPMs. This is where the turbocharged petrol engines come into power. The turbo petrol engines have the power at slightly low RMPs. But both the petrol engines lack the amount of torque.
  • On the contrary, the Diesel engines offer power at low RMP’s. Even there is instant and higher torque in the turbo-diesel engines again at the low end of the RPM’s.

Now lets come back to the question.


BS6 Petrol engines can replace the BS6 diesel engines in terms of daily use. Considering the rising Diesel prices. In addition, the maintenance of Diesel vehicles is at power to that of petrol engines. Even the prices of vehicles with diesel engines is even more expensive than their Petrol Counterparts.


The other aspect is that the vehicle is for a specific purpose like loading, carrying goods, driving in hilly areas, towing and the surprisingly off-roading. If these are the purposes of the low-end power and torque delivery is always appreciated. Even the load-bearing capacity of the Diesel engine is more than petrol engines.

Choose wisely whether the petrol engine can get the job done? or it is the diesel you require for that addition low-end power and torque. Tell us in the comment section which one you prefer and why?

Also Read: Top 10 BS6 Sports/Performance Bikes in the Indian Market

Utkarsh Bhardwaj
Utkarsh Bhardwaj
Technical Content Strategist at GoMechanic | Big Time Petrolhead with the passion for building cars and driving those beauties.


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