Which fuel to run your car on? Cng or petrol?

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Previously, there weren’t long queues at either of them but today, be it petrol or a cng station, there is a long wait to get your car filled. So we were wondering, which fuel is better to run your car on?

LPG so far isn’t the answer, as government still lacks a proper policy about it and the price is also ungoverned and exorbitant.

In my personal experience, my 1000cc carburetor car gives an average of  22 KM /Kg on CNG. While on petrol it does not give more than 10 km a liter. But than, CNG will operate better on a carburetor engine and petrol will not be give a good economy, just as it would give on a new engine.

My 1000cc EFI engine cars give me an average of  28 KM/kg on CNG whereas on petrol, it gives me 17 – 18 KM /liter.

*note that these averages are without A/C and at smooth acceleration.

In comparison of cost, CNG is better , but in comparison of engine life and car maintenance point of view, Petrol is best. And in old carburetor engine, petrol average is not so good and that’s why people try to run them on CNG.

But in latest EFI systems and the sort of technology in cars, petrol average is not bad so why bother running CNG at all.

As we know CNG is not available in many areas for as long as three days in a week. So CNG will not be able to survive for that long in people’s car while the public transporters who charge fares on diesel prices, will stop operating as CNG is unavailable. Such high prices of petrol, cars tuned on CNG which do not perform well on Petrol, increase expenses for everyone.

So what we should focus is tuning our cars on petrol properly and driving them properly to get the best mileage as in the above video, and a case which every Toyota Surf owner would tell is that the V6 Surf gives a better mileage than the smaller size engine.

If government provide some subsidy on petrol prices and bring it down to some extent many domestic car owners will convert their cars to petrol because of the following reasons:

  1. Non availability of CNG in 3 days a week.
  2. Low pressure of CNG in winter.
  3.  Queue of cars at CNG pumps.
  4. Poor engine protection on CNG.

The government should however prepare people in advance rather stomp in their faces with crisis, one after another.

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10 Comments
  1. Saad Waqar says

    suggestions and complaints welcomed.

  2. Ali Salman says

    we don't even have petrol here.. what to say about cng 😀

  3. Shafin Umer says

    I would never convert my car from petrol to cng!

  4. Muhammed Ahmed Shoaib says

    Good points

  5. Hamza Khalid says

    Firstly, cng should be.limited to 1000cc card which have an inefficient engine. This would solve cng problem to certain exteny. Secondly, hybrid cars should.be introduced. Cars like prius which do 30km/l of petrol would b cheapest, provide the best level of comfort in its price and is also according to energy crisis of Pakistan.

  6. Slasher Dynamitar says

    Very Good share Mr. Saad Waqar!

  7. Mian Hamza says

    30 KM/L ? No way man !! Our does 25 on motorways and obviously less in urban drives.
    Though it's good but is not the best solution. A friend of mine was complaining that his Prius is not doing well . what I diagnosed was his style of driving – rude. You can't pretend a good outcome unless the input load is gentle .
    Totally agreed with #TopGear , changing car is not a solution but the way you drive . Moreover , it's a misconception that buying a hybrid eliminates the cost of fuel . Let me clarify , Hybrid performs good only and only when you're gentle to the accelerator. As soon as it reaches the limit; it suddenly starts making fumes.
    Hybrid with the best mileage is Honda Insight 1330cc. One should also consider the engine displacement and not only the hybrid feature. Prius is 1500 and 1800cc , being sold .

  8. Ali Usman says

    I am using a 2000 cc diesel and its giving me 18 km/l in long trips.

  9. Ahmed Talal says

    I own 1000 CC car (cultus) and it gives me 20 Km/kg in city. While on petrol, mileage sucks purely. I hardly get 8-12 km/litre in city. The bad mileage on petrol is indeed due to the additives which oil companies add in petrol. So, CNG is economical and it will be even if government raise its price.

  10. Muhammad Arsalan Khan says

    from my village 2 my home at peshawr,which consist of abt 140kms on motorway,rough terrain,heavy traffic areas etc…. our civic 1.8L burns abt 1100 CNG,and in petrol its abt 1700 while our axio fielder 1.5L (when minding the eco mode) burns abt 1300 petrol,i think the peopl seeking economy should go for axio,its the best option availble in toyota,honda city have a pretty low mileage reputation too but in auto tansmission its mileage sucks…

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