Petrol vs CNG Running Cost

Report an Issue

Help us improve by telling us what went wrong.

Embed this Tool

Customize and copy the embed code for your website.

Should You Switch from Petrol to CNG? Run the Numbers First

With petrol prices in Nigeria fluctuating between N600 and N1,200 per litre depending on the week and the filling station, millions of Nigerian vehicle owners are seriously considering the switch to Compressed Natural Gas. But switching is not free - CNG conversion kits cost between N200,000 and N900,000 depending on the vehicle type and installer. The Petrol vs CNG Running Cost Tool helps you calculate exactly how much you would save per month, per year, and how quickly you would recoup your conversion investment, so you can make this decision based on hard numbers rather than guesswork.

How the Comparison Works

The tool asks you for a handful of straightforward inputs: your daily or weekly driving distance in kilometres, your vehicle's fuel consumption rate (litres per 100km for petrol, or SCM per 100km for CNG), the current price of petrol and CNG in your area, and - if you are considering conversion - the estimated cost of the conversion kit and installation. It then calculates your monthly and annual fuel spend under both scenarios and shows you the difference.

For those who have already converted and simply want to track ongoing savings, you can skip the conversion cost section and focus purely on the per-kilometre running cost comparison. The petrol versus CNG calculator adapts to both use cases.

Understanding the Real Savings

At the time of writing, CNG prices at NIPCO and other filling stations in Lagos hover around N230–N300 per Standard Cubic Metre (SCM). One SCM of CNG provides roughly the same energy as one litre of petrol. That means if you are currently paying N800 for a litre of petrol, switching to CNG could cut your fuel bill by 60 to 70 percent. For a commercial driver covering 200 kilometres daily, the savings can exceed N100,000 per month.

However, these headline numbers hide important nuances that the CNG running cost tool helps you uncover. CNG tanks are heavier, which slightly increases energy consumption. CNG filling stations are not yet as widespread as petrol stations, meaning you may need to drive further to refuel - adding hidden kilometres. And the conversion cost itself represents an upfront investment that takes time to pay back. The tool calculates your personal break-even point so you know whether the payback period is three months, six months, or two years.

The Nigerian CNG Context

The Federal Government of Nigeria, through the Presidential CNG Initiative (Pi-CNG) launched in late 2023, has been actively promoting CNG adoption as a way to reduce the economic pain of petrol subsidy removal. Conversion centres have sprung up across Lagos, Abuja, Benin City, and other major cities. Some state governments are even subsidising conversions for commercial transport operators like Danfo and Korope drivers.

But adoption has been slower than hoped, partly because many vehicle owners simply do not know whether the maths works out for their specific driving pattern. Someone who drives only 30 kilometres daily to and from work has a very different payback period from a ride-hailing driver covering 250 kilometres on the Bolt or Uber platform. This is precisely the gap the Petrol vs CNG Running Cost Tool fills - it personalises the calculation so you can see your own numbers, not national averages.

Beyond Fuel Cost - Other Factors to Consider

The tool focuses on direct fuel cost, but smart users should also factor in a few additional considerations. CNG burns cleaner than petrol, which means less carbon buildup in your engine, potentially extending engine life and reducing maintenance costs. On the other hand, CNG tanks need periodic hydrostatic testing for safety, typically every five years, which adds a recurring cost. Some insurance companies also adjust premiums for CNG-converted vehicles, so it is worth checking with your insurer.

Everything runs locally in your browser. Your driving data and fuel prices are not uploaded anywhere. Adjust the numbers as prices change - many users bookmark this page and revisit monthly to track whether their savings projections are holding up against reality.

Whether you are a Lagos Uber driver, an Abuja commuter, or a fleet manager evaluating CNG for your entire transport operation, the Petrol vs CNG Running Cost Tool gives you the clarity you need to make a confident, financially sound decision.