Quote:
43) The most efficient way to slow down
When you *have* to slow down, here's an approximate heirarchy of methods, from best to worst.
1) coasting in neutral, engine off (ie. roll to a stop);
2) coasting in neutral, engine idling;
3) regenerative coasting (hybrid vehicles)
4) regenerative braking (hybrid vehicles)
5) coasting in "deceleration fuel cut-off" mode (in gear, above a certain engine RPM)
6) conventional friction braking (non-hybrid or hybrid)
Choosing the right method depends on traffic conditions (following vehicles) and how quickly you need to stop.
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I didn't say it earlier, but I do agree with this ranking.