This is my new Prius C's engine warming up in the morning. The engine shakes once when starting up and I seems to be able to detect a slight knocking sound, but might just be my paranoia imagination. BTW, this morning, I totally thought my car stalled getting out of the garage. OMG, my engine died. Wait, it's a hybrid.
Thanks. Probably nothing. I just want to make sure the engine sounds normal. I expected it to be quieter and more refined, but it's small engine, so can't ask too much.
