Used to LeSabre. Avy does not have as many features, has a motor whine, and windows stick; trunk whams when closing. Overall ride is smooth, gas is good. Info display very limited. 1st and last; back to Buick. More bang for the buck.
Back-up mirror, seat re-set controls, fastened floor mats, pass through from trunk to back seat area.
More info features (tire status, traction, better gas gauge, etc.). Quieter trunk closure. Better window retraction.