I was worried that my Chevy Impala would not compare well with Toyotas, Hondas, Dodges, and VW's that I have owned, but I was pleasantly surprised. Quality, economy, ride, reliability are all outstanding. I think American cars, at least for the ease of servicing and the relative price, are commonly underrated. The Impala compares very favorably with the Honda Accord and even with the Dodge 300, both of which I have either owned or driven. Quiet, responsive, respectable (my 19 yr old college student daughter says it is "swank"): it is the perfect car for my 54 yr-old tastes.
Responsive, quiet, stylish, economical. both in capital outlay and in operation.
Seating cushioning/foam thickness for heavier drivers front and back. Better cruise control accessibility and mechanics. Telescoping steering wheel. Tachometer.