@Meza994 a reminder that any team at the start of a career get some upgrades applied, even race one, any team, will not be 100% the car you see in the xml file, but it will have already a few things applied from the upgrade section.
So it could be that the redbull gets a chassis upgrade right away in the career and my team. We cannot know, and will really never know, as the upgrades applied, or the path and everything related, is on files that we cannot open/modify.
We can only see the effect in physics of maximum upgrades, because those are stored in the handling files.