Every car has an optimal speed range that after-effects in minimum fuel consumption, but this range differs amid agent types, design and age.

Typically it looks like this graph below: fuel burning rises from about 80km/h, partly because air attrition increases.


But speed is only one factor. No matter what car you are driving, you can reduce fuel burning (and accordingly emissions) by active more smoothly.

This includes anticipating corners and alienated sudden braking, taking the foot off the accelerator just before extensive the peak of a hill and canoeing over it, and removing roof racks or bull bars and added items from inside when they are not needed to make the car lighter and more streamlined.

Driving wisely

In New Zealand, EnergyWise rallies used to be run over a 1200km course around the North Island. They were advised to authenticate how much fuel could be saved through good active habits.

The aggressive drivers had to reach each destination within a assertive time period. Canoeing too slowly at 60-70km/h on beeline roads in a 100km/h zone just to save fuel was not an option (also because active too slowly on open roads can accord to accidents).

The optimum boilerplate speed (for both able and boilerplate drivers) was about around 80km/h. The key to saving fuel was active smoothly.

In the first rally in 2002, the Massey University entry was a brand new diesel-fueled Volkswagen Golf (kindly loaned by VW NZ), active on 100% biodiesel made from waste animal fat (as Z Energy has been producing).

A car active on fossil diesel emits about 2.7kg of carbon dioxide per liter and a petrol car produces 2.3kg per liter. Using biofuels to displace diesel or petrol can reduce emissions by up to 90% per kilometer if the biofuel is made from animal fat from a meat works. The amount varies depending on the source of the biofuel (sugarcane, wheat, oilseed rape). And of course it would be unacceptable if biofuel crops were replacing food crops or forests.

Regardless of the car, drivers can reduce fuel burning by 15-20% by convalescent active habits alone – abbreviation emissions and saving money at the same time.

Fuel efficiency

When you are cerebration of replacing your car, taking into annual fuel ability is addition important way to save on fuel costs and reduce emissions.

Many countries, including the US, Japan, China and nations within the European Union, have had fuel ability standards for more than a decade. This has driven car manufacturers to design ever more fuel-efficient vehicles.

Most light-duty cartage sold globally are accountable to these standards. But Australia and New Zealand have both abject the chain in this regard, partly because most cartage are imported.

New Zealand also charcoal afraid about introducing a “feebate” scheme, which proposes a fee on alien high-emission cars to make alien hybrids, electric cars and other able cartage cheaper with a subsidy.

In New Zealand, active an electric car after-effects in low emissions because electricity bearing is 85% renewable. In Australia, which still relies on coal-fired power, electric cars are amenable for higher emissions unless they are recharged through a local renewable electricity supply.

Fuel and electricity prices will accordingly rise. But whether we drive a petrol or electric car, we can all shield ourselves from some of those future price rises by active more calmly and less speedily.

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