This is my second RL after 25 years of BMWs (still own one, convertible). After seven years of the RL model I have replaced one (that's 1) brake light. Nothing else except regular maintenance. I still like the body style, but will test drive a 2005 later this week. The difference in dollars with the BMW is simply not worth it., in fact, I would take the RL over the 5 series at the same price.
Totally reliable, attractive and reasonably priced.