CO₂ Emissions (G/km)
CO₂ emissions in grams per kilometre show how much carbon dioxide a car emits per distance, closely linked to its fuel consumption.
What is CO₂ Emissions (G/km)?
Official figures come from the WLTP test. Many countries base vehicle tax on g/km. Electric cars have zero tailpipe CO₂. Each litre of petrol burned produces roughly 2.3 kg of CO₂, and each litre of diesel about 2.6 kg.
How it works
Burning fuel turns carbon in the fuel into CO₂, so more fuel used means more CO₂.
Why it matters for your car
Tailpipe values do not include emissions from fuel or electricity production. Larger wheels or options can change a model’s official value.
Other terms
- Body Roll
- Brake Fluid Boiling Point
- Cabin Air Filter
- Clear Coat Failure (Lacquer Peel)
- Cylinder Head
- Engine Break-in (Running-in)
- Freeze Frame Data
- Fuel Injector Cleaning
- Headrest (Head Restraint)
- Hemispherical Combustion Chamber (Hemi)
- Immobilizer
- Interior Light
- Massage Seats
- Over-the-air Update (OTA)
- Permitted Axle Load
- Pillarless Hardtop
- Rescue Sheet (EV Rescue Card)
- Thread Locker
- Warning Triangle
- Waterless Wash