Purchase advice S60 Polestar 367PS

Hello together, has someone experience regarding Volvo S60 Polestar 367 HP ? Would you like to buy a used one (BJ.2016/50000km) and find hardly any reports. * Are there problems here with engine / gearbox / four-wheeler often times or as far as thoughtless (good maintenance provided of course) ? * what costs with the on average such a normal Volvo year service? * is there from the standard things when buying used car especially what to pay attention to with this model?