Ecology

Car CO₂ Emissions Calculator

Estimate the CO₂ produced by driving a petrol car.

Distance

Fuel use (L/100km)

CO₂ per litre (kg/L)

Calculated Output

CO₂ emitted 16.17

Fuel used 7

Formula: CO₂ = distance/100 × L/100km × CO₂ per litre

Step-by-Step Breakdown

1. Values used:

2. Distance = 100

3. Fuel use = 7 L/100km

4. CO₂ per litre = 2.31 kg/L

6. CO₂ emitted = 16.17

7. Fuel used = (100 / 100) x 7 = 1 x 7 = 7

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The math behind it

Fuel used = distance ÷ 100 × L/100km. Burning 1 L of petrol releases ≈ 2.31 kg of CO₂ (diesel ≈ 2.68).

100 km at 7 L/100km → 7 L × 2.31 = 16.2 kg CO₂.

What about electric cars?

Their footprint depends on the electricity mix — zero tailpipe, but not zero overall.