Quote:
Originally Posted by syenisch
You're still better off coasting out of hear in most cases because you can coast so much FURTHER before slowing down than coasting in gear. Often times if I see a distant red light I will coast in neutral and then if I need to come to a stop or slow down significantly I will throw it in to gear. I have found that if I coast in gear I will unnecessarily slow down more than I need to, and then have to speed up again to get to the speed limit. Save a little fuel when coasting but use a lot more to speed back up. Bad!
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Its all very simple. Coast down a hill in 5th so you loose less speed and the engine is still turning over higher than idle so you dont use fuel. If you have cruise control on, switch it off to maintain the correct speed through slight engine braking and then you can resume if the speed drops lower than needed.