2011 Chevrolet Impala LS 3.5 VVT from North America
Rough idle? And not even 2 years old?
Rough idling issue, very prevalent.
Nice, comfortable car.
Handles well for a "larger" car.
Gets good MPG for a 3500lb car with a V6.
Not very happy with the car though. It's been in the shop three times for a rough idling issue. And on the 3rd time (Today, 2-23-12) they claim it's an inherent thing, and to ignore it. Sorry, but I can't ignore it when it shakes the car and my passengers say "What is that?".
Unfortunately, I will probably not be buying another GM. In fact, this will probably be traded in on a Ford Fusion. This isn't the only GM car I've had with problems.
Would you buy another car from this manufacturer? No
Review Date: 23rd February, 2012
Try using premium gas, and see if the idling improves.
Have them clean the throttle body. Run some Techtron through it with a full tank of fuel.
So they should put gas that costs 30 cents more per gallon in, just to make it run better? I surely hope that isn't the fix. The car is rated for 87 octane, and should run perfectly on it. They need to try a different dealer and get it fixed properly. No new car should run that rough, so something obviously is wrong with it, and the dealer doesn't want to help out with it. Those darn rip off GM dealers...