I purchased the Impala because of its reputation and comfort. I'm disappointed. The first 1.5 years were okay except for an annoying jerking when cold and first accelerate. Service could not determine cause after 3 visits. Last two times in for an oil change I was told the front wheel bearings are going bad and intake gasket has a leak - over $2000 in repairs. I lease to avioid maintenance problems. I will take my loss and opt for early out to get rid of this lemon. No more Impalas for me.
Comfort, good road car, large trunk, good fuel economy for the size.
When will American manufacturers make a car just as reliable as foreign competitors. Two major mechanical problems in first 2 years is rediculous. I'd like to buy a GM product that will last 250,000 miles. In my dreams!