I played the demo and found it frustrating. Mechanical problems are oversimplified; You unbolt the fuel filter to replace it. No removing fuel lines, no removing the gas cap to help depressurize the system, etc. Removing the oil filter results in no oil spilling anywhere, and you don’t even change the oil when you do it. And the mechanic’s test drive is conducted on an amazingly well-laid out autocross course complete with cones, bumps, and corner markers rather than just driving it around the block. It’s also just a formality that you do because the checklist tells you to do it - it doesn’t return any information for you to use, because there’s no diagnostic work required of the player – the game tells you what’s busted by highlighting it in red, and then you remove it and put a green-highlighted part in its place.
It also fails to actually show how the parts go together - I did a brake job, and to do it, the game required me to remove the caliper. The pads stayed behind on the rotor, and I then had to remove them with a wrench.
There’s also no way to screw up. You cannot send the car out until you have repaired it correctly. They should allow you to send the car out without having replaced the brake pads - killing the customer should cost you points!
I think it’s a neat idea, and if the developers actually worked on their own cars it might have gotten fleshed out into something interesting and educational, but as it stands it’s just a “click whatever’s highlighted until it stops being highlighted” game that dispenses wrong information about how cars work. I certainly wouldn’t spend any money on it.