Can a natural gas cylinder be installed in a Nissan Sunny? Will it affect the car’s performance?

Yes you can and the car runs well on it since it's already fuel-efficient and its engine can handle it. However, you’ll notice a slight drop in power, especially when going uphill, and the trunk space will be reduced since the gas cylinder takes up space.

I’ve had a gas system installed in my Sunny for a year now, and the car is very fuel-efficient. However, acceleration has become slightly slower. If you travel a lot on highways, you might feel that regular petrol gives better performance.