It will definitely become a repetitive task, but at least it won't just be clicking 5 times and car's good as new. I'm in support of this because people will actually give a shit about their car's engine health seeing as it'll take some time for their car to be fixed again.
I own a Zonda and I can drive it into other cars from behind and send them flying into the air with basically no repercussions at all. I'd just go down to RC, buy 4 wrenches and left click them to fully fix my engine in less than 10 seconds. This will also allow RC to charge based on how badly damaged the car is and replacement parts price.