I just purchased my Mazda3 wagon and love it. However my fiancee is having an issue with the passenger seat. She tells me that it wobbles when i make turns. I kinda feel it when i sit there. Its the lower part of the back, it seems to roll almost to the side when the car turns or when you wiggle the seat back and forth. Any advice or suggestions thanks

 

Try to tighten the two bolts that hold the seat down

 

If it's new I would let the dealer handle it in case something's broken.