While the E53 shares many similarities with the E39, it is mainly in the individual components. The overall difference is far more than just a jacked up E39. After all, the E53 is a TRUCK while the E39 is a sport sedan. For pure driving enjoyment I would prefer my sedan over my truck any day. That said, there is a place for the X5 especially up here in the cold, snowy north.

To the OP, perhaps you could give us some insight into what you are looking for and help us answer your question a bit more accurately. Are you asking about what to expect from a driving experience or from a maintenance perspective?