Car seats should not be placed near airbags and should be leaning at the appropriate angle as specified in the user guide for your specific car seat. (thefashionablehousewife.com)
There are large side clips that make it easy to thread the lap belt through and the car seat sits at an appropriate angle when installed without a base. (bestcarseathub.com)
Also, even though the seat features a level indicator to ensure an appropriate angle, it does not have reclining options so some vehicles may not allow for the seat to sit at the proper angle. (experiencedmommy.com)