The first tip to save gas can be applied from the moment we start the car and you can buy used cars in New Zealand from Auto for Trade. In the case of vehicles with a gasoline engine, we must start the march as soon as we touch the ignition, but in diesel it is advisable to wait a few seconds; although not much since the car in cold consumes more and will take temperature much earlier if we roll than if we have it stopped at idle. Of course, in both gasoline and diesel you have to start the engine without pressing the accelerator pedal.