Autocar India
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Which one is better in terms of durability, overall expenses, and maintenance: a CNG engine or a turbo-petrol engine?

Verified
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If you are choosing between a CNG engine and a turbo petrol engine, the decision should be based on your running and usage pattern rather than durability alone. CNG engines are generally more cost-effective for high-mileage users because the fuel cost per kilometre is significantly lower, and modern factory-fitted CNG systems are well integrated and reliable. However, CNG cars do come with compromises such as reduced boot space, slightly lower performance and the inconvenience of refuelling at CNG stations.

Turbo petrol engines, on the other hand, offer better performance and driving enjoyment, especially on highways and during overtaking. Fuel efficiency however will be far lower, especially in stop-go conditions. As far as maintenance goes, both routine service costs should be similar. 

The key point is that CNG only makes financial sense if your annual running is high enough to offset the performance deficit (compared to a comparable petrol engine). If your running is moderate or you value performance and convenience, a turbo petrol engine is the better choice. 

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Posted on: 18 Aug 2026