It took me a while to figure this out, but there should be nothing violent or abrupt about restarting your engine. I usually do it somewhere in the 30s using 5th gear. Here's the key, you don't let the clutch all the way out and you put it back in before the engine actually starts. It's just a little rub of the clutch plates and nothing more. It needs to be done kinda quickly. I just jerk the pedal back part way and then push it back in. The engine starts half a second later. I can do this almost perfectly and it just feels like I tapped the brakes for a split second. It takes a lot of practice, and quite a bit of skill, so don't be afraid to use ol' sparky to fire up your engine if you need power in a pinch. Obviously the key has to be in the "run" position and I would recommend using extreme caution so as not to engage the steering wheel lock when turning off your engine. Some cars engage the steering lock immediately after turning the key off.
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