Opposite fixed costs / car rate. Your opinion is required

Good morning. At the moment I think about financing a new car for luxury reasons. I feel like something bigger. My monthly fixed costs include: All insurances (dental supplement, household supplies, current car sales etc.), electricity, hot rental, internet, gym, mobile phone contract, food, drugstore, hairdresser, refueling, streaming services, priv. retirement provision. – Home ownership is no longer planned. At the end of this list is a plus of 850 € at the end of the month. after a down payment cost approx. 247,11 € per month. Final rate after 48 months approx. 11,000 €. The vehicle to be financed is a diesel with 53,000 km on the clock. I would then sell my current vehicle privately to get the down payment back in and put it back on the High Edge. I am very careful about financing and wanted to get back insurance. What do you think about it?