Social Action Office

Sign Up Your Car to Make it 'Carbon Neutral'

Greenfleet invites you to subscribe $30 per year (fully tax-deductible) to render your car 'Carbon Neutral' by having 17 trees planted on your behalf. Science shows that these 17 original mixed species trees, over their lifetime, can absorb the carbon dioxide emitted by your car in a year, storing the carbon in the wood and releasing oxygen back into our atmosphere. All trees planted by Greenfleet are in areas of environmental concern, and lands are permanently revegetated using indigenous species.

To sign up your car, visit


Greenfleet - Carbon Neutral Transport

The Problem

Transport is the fastest growing source of global greenhouse gas emissions.

Each year the average car on Australia's roads uses 1920 litres of fuel and emits 4.33 tonnes of CO2 greenhouse gas that contributes to climate change and global warming. For every litre of petrol your car uses, it takes in 10,500 litres of fresh air, extracts the oxygen from it, and exhausts 2.25 kilos of CO2.

Technologies are on the way that will substantially reduce fuel consumption, but the expected rate of take-up into the transport fleet means that it will be 10-20 years before we can expect to see any worthwhile reduction in carbon emissions.

The Solution - Trees and Technology

Greenfleet tackles these problems in two ways:

  • Planting trees to lock up the emissions that we make at present, and restoring oxygen to the atmosphere.
  • Promoting new technologies to reduce emissions from cars in the future.


Reducing Your Fuel Usage

About Your Vehicle

  • Maintain your car properly, and service it at the manufacturer's recommended intervals - an out-of-tune car uses a lot more fuel.
  • Keep your tyres properly pumped - rolling resistance increases with underinflated tyres.
  • Remove excess weight from the vehicle - up to 95% of the fuel in your car is used in moving the mass of the vehicle, rather than the passenger(s).
  • Do not carry things on your roof rack unnecessarily - aerodynamic efficiency can be badly affected, and this will increase your fuel usage.
  • When buying a new car consult the 'Fuel Efficiency Guide' available at all car retailers, and choose a fuel-efficient one from that class of vehicle that you require.

About Fuels

  • Be aware that petrol, diesel, LPG and CNG (Compressed Natural Gas) are all fossil fuels, and when burnt emit CO2 greenhouse gases.
  • An LPG fuelled vehicle will generally cause less air pollution than its petrol equivalent, and will emit slightly less CO2 greenhouse gases.
  • Some new-generation diesel engines are very clean and extremely fuel-efficient.
  • The best fuel from an environmental point of view is compressed natural gas (CNG), but this is generally not available for passenger cars and light commercial vehicles. CNG requires dedicated engines and extremely expensive refuelling facilities, so that it is most suited to large heavy transport fleets. CNG provides approximately 17% reduction in greenhouse gas emissions, and is a very clean fuel.

About Your Driving

  • Use the car only when you have to, and plan your trips to avoid peak hour traffic.
  • Where possible, Rideshare, use public transport or ride a bike.
  • Drive smoothly and at a reasonable speed - at 110 kph your car will use up to 25% more fuel than at 90 kph.
  • Don't overfill your tank or spill fuel.
  • If traffic is stationary, switch off your engine.


Text taken from Greenfleet brochure, A Motorists' Guide to the Environment.


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