The v6 motor is from Cadillac, and while it is quite peppy compared to the 2011 v6 3500, its hard on gas in town driving. We always rent a new impala when we are in florida, and in 2012 wondered why the fuel mileage was so bad. Then I opened the hood to see the Cadi V6.
bad timing chains. I took one for a ride and it had a rattle between 1800 and 2400 rpm. sounded like marbles on tin. it also had a bog or stumble when the gas peddle was press and held steady. car had only 77k on it. look it up and you will see. the dealer really pushed the fact that the car still had a warranty. 3.6l v6
I bought a 2013 with a 3.6 and so far so good . I drive it back and forth to work , which is a 100 mile round trip and get 30 plus week after week. It's pretty comfortable my previous ride was a 2002 G.P. Like I said no regrets so far.