My 2005 V50 lacks power, the S40 has more "pick-up" than this car. It has trouble with even a gradual incline and there's a delay when stepping on the gas to speed up. From the time I took delivery of the car, it had an acceleration issue after slowing down to go over speed bump or turning corners - very annoying. It would seem like it was going to stall when I reapplied pressure to the gas pedal. Service people didn't know how to fix it for the first 2+ years I owned it. The horn went out, my keys have fallen apart, and I hear a loud click/clunk when I back up while parallel parking. Visibility is poor - rear view and front-sides of windshield. Driver seatbelt seizes up regularly. Whew!
I love the turning radius and the rear storage space (and the pull out storage cover).
Make it more responsive and improve the visibility. provide better training for Volvo service reps and mechanics so they can more effectively diagnose and fix issues with all Volvos.