The hover car

Controls

Moving Around = WASD / Left stick
Aiming = Moving the mouse / Right stick + Gyro
Shoot = Left mouse click / Right trigger
Exit car = E / Left face button

Controller diagram:

hover_car_controller_diagram

Health System

The hover car`s main body has 200 health points.
When the main body is destroyed the player and the player will be kicked out and all the thrusters will turn off (not break they just turn off). The player will only be able to enter the hover car again when its health is over 50% of the max health.
The engine will also start smoking to indicate that it is broken.

Each thruster also has its own separate health pool with 50 health points.
When a thruster is broken it will stop working and start applying drag to the hover car slowing it down.
It will also start smoking to indicate that that thruster is broken.

Parts can be repaired by hitting it with a crowbar.

The hud

In the bottom-right corner of the screen a status display shows the health of each individual part.
this display is also shown when not in the hover car.
The icon and health numbers change color depending on their current value:

Green → Yellow → Red

When a part is completely destroyed its indicator turns gray.

Here is a simple mockup of how the display should look:

health_system_sketch