PRESENTATION+PROBLEME VOLVO C70 COUPE 2,3 T5 239PS

Hello guys, since yesterday proud owner of a fully equipped VOLVO C70 COUPE 2,3 T5 239PS AUT. (DOLBY SURROUND CAPELLE 🙂 Unfortunately, some things have been noticed very negative during the transfer: -Zahntriebelwechsel inkl. Rollen und WaPu+Öl+Filter+Keili fresh but problem: it stutters somehow when accelerating more strongly almost feels like ignition dropouts (ZK+Zündkabel???) No indicator light on, sometimes SERVICE but they didn’t have a rear control in the workshop:-( What can that be, really only candle or cable?? -Is the COUPE, but that the driver window/F door is already loud as from 80km/h as sow!? what can man do here??? With driver side everything OK – the sliding roof “klappert” , how can I fix it?? Thanks to you in advance, but I already know my 4 SCHWEDE but I don’t know me-70-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o