A significant level of carbon dioxide emissions in Australia is attributed to personal car use. Although public and self-propelled transport are generally less polluting than personal cars, it is sometimes necessary to use a car.
One way of reducing the amount of emissions produced from driving is to own an eco-friendly (green) car. Green cars offer an alternative to traditional petrol-consuming vehicles that rely solely on fossil fuels to run. Green cars produce low or no emissions, helping to reduce greenhouse gas emissions. There is an ever expanding range of green cars, making them an increasingly viable option. However, green cars do have limitations such as a higher price and restricted range.
While there is no standardised definition of a green car, it is generally considered to be one that has low carbon emissions. All cars sold in Australia must meet minimum emission requirements, but green cars exceed the minimum threshold or completely cut exhaust emissions. To do this, green cars either use electric or hybrid drive systems.
Hybrid vehicles use both petrol and electric engines to power the car. Unlike electric cars, they do not need to be plugged in to recharge the battery as the petrol engine charges the batteries. Some also utilise deceleration when braking to charge the electric engine.
They run on either the petrol or electric engine, and the onboard computer in the car switches between the two engines to maximise efficiency. For example, when the car is idle and during acceleration, the electric engine will switch on, but while cruising, the petrol engine will take over.
Electric cars run solely on a rechargeable battery. They are charged from charging points either at home or in public places. Some electric cars can also utilise the deceleration process to charge the battery.
Electric cars have no fuel tank or exhaust pipe and never need an oil change. However, they are restricted by the need to recharge, which can only be done in certain locations.
Green vehicles have a range of benefits for both the owner and the community. Here are some reasons to drive a green car:
All cars sold in Australia must meet emissions testing requirements. This information should be displayed somewhere on new vehicles (generally on the windscreen).
If you are buying a fully electric car, then your vehicle won’t produce any emissions. The situation with hybrids may be slightly murkier as the manufacturer will report fuel economy that you may never be able to achieve during real-life conditions.
It is important to research perspective cars before you commit to buying one. There are independent bodies that test emissions and fuel economy on most new vehicles and might give a less biased figure.
One thing to consider with an electric car is how the car will be charged. Although electric cars have no exhaust emissions, if coal powered electricity is used to charge the car, then it is still responsible for carbon emissions. Electric cars can only be truly emission-free if a renewable source of electricity is used to charge the car.
Here are some common eco-friendly cars available in Australia:
The two main drawbacks of green cars are the upfront cost and the limited range. Green cars are much more expensive than a comparable petrol vehicle. Even considering the savings on petrol, oil, maintenance and stamp duty, it would take a few years to offset the upfront expense. However, this is assuming petrol prices do not drastically increase.
Range refers to how far the vehicle can travel before needing to refuel. When compared to petrol vehicles, electric cars have a very restricted range. They are also limited to areas which have recharge stations, such as your own home or a public recharge station. This makes electric cars problematic for those who need to travel longer distances or stay away from home. However, hybrids could be a suitable option in this situation.
Green car technology is still developing, and while both these issues are certainly legitimate, you should expect rapid improvements as they become more common.
Green cars are more expensive than petrol vehicles. An electric hatch may sell for $30,000, whereas a comparable petrol model might be $15,000. Medium size sedan hybrids go for around $40,000, whereas a petrol equivalent could be as low as $20,000. For new cars, stamp duty will be less for a green car than a regular petrol vehicle.
If nothing else, you can substantially reduce your vehicle's emissions just by changing your behaviour. Here are some green driving tips:
Green cars are becoming increasingly viable for those living in cities. If you are concerned about your vehicle's carbon emissions and its effect on the environment, then you should consider an eco-friendly alternative. However, be aware of the additional upfront cost and limitations before you commit.
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