So there’s this annoying red light on my way to work. When the light turns red, it is one minute and twenty seconds until it turns green again (I timed it). So if I am the first or second person at the light, I put the car in neutral and turn off the ignition. Will this in fact save any gas?…

Does turning off engine at red lights save gasoline?

AL5000 March 16, 2010, 5:55pm 5

With a modern engine the break even point for leaving the engine running vs. shutting it off and restarting is less than 20 seconds,.