I had my Riviera for 6 years. I just traded it in on a Cadillac CTS. It only had 69,000 miles on it when I traded it in. I sure hope I didn't make a mistake. This Riviera was the most reliable and comfortable vehicle I have ever owned. Handles great, sporty feel for a big car. Don't hesitate if you are thinking about buying one and it is in good shape.
Sporty feel. Great handling. Reliability. Cost to own.
Only shortcoming is that it required premium fuel.