Should I turn the engine off when I'm stopped in traffic?

Not much actual fuel-saving benefit; massive potential problems if the battery goes flat

Potential Fuel Saving: Negligible

Annoying and pointless, except in absolute gridlock

The Federal Government offers this recommendation in itsGreen Vehicle Guide website: “By having the engine switched off, even for a short period, you will save more fuel than is lost … in restarting the engine. The net increased wear and tear from this practice is negligible.”

On the Calais V V6 we tested, one engine start appears to

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What's the most efficient highway travelling speed?

Driving slower will save you some fuel, and a little money. But are you prepared to cop the time penalty?

Potential Fuel Saving: Up to nine per cent

Here's a quote from the Federal Government's Green Vehicle Guide website: “High speeds result in high fuel consumption. At 110km/h your car uses up to

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Should I turn off the air conditioning to save fuel?

Thinking of switching off the cool air to save money? Ridiculous!

Potential Fuel Saving: $1.75/hr, maximum

Driving with the air conditioning off in the middle of summer is intensely unpleasant, uncomfortable, irrelevant and stupid. I know this because I've done it now for two straight weeks in ambient temperatures of more than 40 degrees C. (This was one of the 'hyper-miling' techniques we used to

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Will I use less fuel on a toll road?

Toll roads are faster and more fuel efficient? Don't believe it

Potential Economic Benefit: negative

Faster (but only if free-flowing) and almost always more costly

Selling the concept of toll roads to the driving population on the basis of fuel saving via more efficient driving is generally a con, or at least a liberty with the truth.

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