I'm sure lots players in NewGame+ wrecked their car at one point.
It was frustrating for me, because i had to build a completely new one. But then, i tried taking my wrecked car into the race because i saw that i could do that, why not?.
However due to my car not having any strength and I didn't want to be a contact bomb i just left.
Magically, wrecked car appeared in my garage with half it's strength! So i thought i'd share this knowledge in this guide.

The whole guide is literally in those few sentences but i have guide with pictures down below :D

• Go to any race you want
  
• Select your wrecked car
  

• Enter any race with your wrecked car
  

• You'll see that your car has low strength
  

• Exit race immediately
  

• If you go to your garage, you'll see that car recovered half it's strength.

I hope it was useful for you. If it was, leave a like.
It feels rewarding when i see people using & liking my guideline!

PS:If you don't want your car to be wrecked, just leave the race before it's wrecked LOL