Speedo & Rev Gauge Not Accurate

I’ve noticed with most of the cars and truck ! That the speedo gauge and rev gauge is not 100% accurate I’m pretty sure that a lot of people don’t care about this but it’s supposed to be a real life based driving simulation game right ? See when I play games like these I look at everything and try to see what’s wrong if there’s any glitches or bugs. Like with the truck for example you’ll be doing 6000Rpm and on the gauge only says your doing 3000Rpm I don’t know if I’m reading it wrong but I’m pretty sure I’m not lol. Also with most of the cars that I’ve driven so far the speedo is not accurate I can tell you that from now because I drive with KM/H not MP/H and I’ll be doing say 200Km/h and on the speedo in the car it will say that I’m doing 80Km/h or 50Mp/h. When I played Forza Horizon 3 that was perfect there was nothing wrong with that game it was spot on. I honestly don’t know what happened to this game. It feels like the designers of this game rushed it. Especially with all the other issues that people have been having. You people need to get your act together and seriously do some fixing up. Because it doesn’t look like you’ll be getting good reviews about this game that’s for sure.