It's just Forza Horizon 4 in Mexico with better graphics. Outside of that it's mostly the same repetitive stuff. Lots of online issues, AI is overpowered, mods are on a power trip and banning for liveries but cheating is rampant. If you have Game Pass, by all means play it. But for $60+ it's a hard pass.
EDIT: They recently updated the game. Now anytime you mod your car, buy a car, enter a race, or finish a race, etc. you get stuck with an infinite black screen loop. This on a Xbox Series X, people on PC are having much more issues.