I am on my second Impala. My first one was a 2000, and had 40,000 miles on it. It got totaled after hitting bambi. I had absolutely no problems with that car.
My new one is a 2001, with a little over 4,000 miles. I have not had any problems with it like the previous one. It gets decent gas mileage, accelerates well, corners better, and brakes the best.
I also drive an unmarked 2001 CV for a special unit I'm in. I like that car too, both are very good.
So, after 44,000 miles behind the wheel of 2 impalas, I like them, a lot. They have held up well, no major problems. I make sure it gets regular maintenence. I take it home 24/7, so I clean it once a week.
The car handles an electrical load very well. I have a laptop, camera, lo jack, moving radar, and a printer hooked up in the car. With all of that plus a light bar, no problems.
The only thing I don't like about the Impala is the front bumper. It is too low, with that shroud attached. I scrap everything with it.
Overall a really decent car, good enough for my patrol needs