Fuel Economy Calculator

The fuel economy calculator works out how efficiently your vehicle uses fuel, reporting the result in both kilometres per litre (km/L) and litres per 100 km (L/100km) — the two measures used in Pakistan and internationally. Knowing your car's true economy is the first step to controlling fuel costs as petrol prices rise.

The calculation is a simple ratio: divide the distance driven by the fuel used. If you drive 300 km and refill 25 litres, your economy is 12 km/L. The reciprocal — 100 divided by km/L — gives litres per 100 km: in this case about 8.3 L/100km, the measure used in most international fuel consumption figures.

Why do the two measures matter? Pakistani buyers think in km/L (a Suzuki Alto at 15–18 km/L, a Corolla at 12–14), while international reviews and EU-style spec sheets use L/100km, where a lower number is better. This calculator shows both, so you can compare a local car against an imported spec sheet on equal terms.

Your real-world economy is almost always lower than the brochure figure. Traffic, air conditioning, carrying loads, tyre pressure and driving style can cut economy by 20–30% in city driving. To measure your actual figure: fill the tank completely, note the odometer, drive normally, then refill and divide the kilometres by the litres pumped. Average over several tanks for reliability.

Track the number over time — a sudden drop in fuel economy is often the first sign of a mechanical issue, such as under-inflated tyres, a clogged air filter or spark plug problems. Regular checks save both fuel and repair costs.