10 Hardest Video Game Genres To Make (From A Game Developer)
7. Simulation Racers
I think it was Stephen Fry that said, "the more passionate [a person] gets about something, the more unreasonable they become when you suggest they don't know everything about it."
Having worked on several AAA driving games with car enthusiasts, I can attest to this being completely correct.
The people that make simulation racing games are car nutters. They know to within the millilitre how much wiper fluid a Subaru Impreza Turbo holds, and they dislike being questioned on their sources. They just know.
So then, that meticulousness is transferred over to the development of their sim racer, with every minuscule detail accounted for, in a manner considered overkill to anyone outside of the big car community bubble. However, you soon realise that fastidious attention to detail isn't surplus to requirements at all, because the only people more defensive about their knowledge than car devs...
...are sim racer players.
There are entire communities dedicated to finding inconsistencies between real vehicles and their in-game counterparts, and they don't care one single Magic Tree if the car stats were correct at the time of development and then changed afterwards - these sticklers for detail require complete accuracy, all the time.
Unless you're willing to keep your level of detail firing on nitrous the whole time, I'd steer clear of sim racers.