I have owned this car for 2 years, and have had absolutely zero problems with it. It does 0 to 60 in 9 seconds, plenty fast enough for me, and has a magnificent ride. I have had several complements from total strangers on how beautiful it looks: I have the blacked out grill with ming blue. The aluminum wheels are nice. Anybody who compares this car with an Avalon or Azela(?) or Ford Taurus/Mercury Sable is completely out of their mind! My only complaint is the fuel mileage: I get 26 on the open road - not as good as the 29 I got with my 2000 LeSabre.
Looks, especially the grill. Extremely smooth transmission and acceleration. I think the brakes are good. I have the Harmon/Kardon sound system and it has a great sound!
I would like a little more horsepower. I don't know why Buick lowered it to 197 when the previous LeSabres had 205. Mileage around town is mediocre (15).