This is my first STS had a Toyota Avalon and really there is no comparison.This is so much more car in every respect, it is definitely not boring which is about the best thing I can say about the Avalon. I have the Northstar V8 it is fast. Love the interior except for the glove box.Nav works well and the AWD is great in snow and ice. I use the voice features to do almost everthing for me. I do not like the 2 different size tires. The fact that it is hard on tires is about my only complaint. Like all the bells and whistles more than you know you have.
Heated and cooled seats -heated steering wheel head lamps- voice features bluetooth-keyless everything- stereo-wow