I have a Britax convertible front facing car seat and I tried it in the 3rd row seat at the dealership. It is very secured considering the Britax is on the bulky side. It's just hard to buckle my 15 month old back there since the space and access is limited. My only concern is safety. Whatever other people might say, i still believe that the safest place for kids who still uses a car seat is in the 2nd row. Actually, most car seat manufacturers recommends the same thing.

__________________
2007 E70 3.0