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

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

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

A potential fuel (and licence) saver on the highway

Potential Fuel Saving: Up to eight per cent, highway

Worthwhile … if you’re a leadfoot, or erratic

On 110km/h freeways it’s actually possible to beat the

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.