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Originally Posted by viper 3> Avoid shutting of your car at traffic lights unless wait is long. Restarting burns more fuel. This applies to both petrol and diesel. |
Agree with your 1st 2 points. But, regarding point3, what I understand is, for modern petrol engines (no idea about diesel, turbo etc), the fuel needed for restarting is not more than what you save, if you switch off at signals. With timers available at most signals, a 60sec wait or more is guaranteed to save you fuel.
As mentioned earlier, from what I read on the Net, for modern engines, even for waits of 10secs or more, you save fuel if you switch off. But then, I would need to read up more before confirming this.