Hi everybody! I'm a newbie to the site. My wife 2012 ! has 4000 miles. Here is one of our issues, either hot or cold engine, at a red stop light, with foot on brake and in gear, the engine will vibrate, sometimes barely noticeable, at other times passengers are wondering what's going on. Most of the time, this car is very smooth.... Now that it is getting warmer here (AZ.), we are using the A/C more, when slowing down to stop at a red light, A/C on, no gas pedal input, the engine will "surge" , rev up with a slight forward thrust then comeback to normal operation.
For the first problem, car was look over at first oil change, to be told "not able to verify". It is going back in this Friday for a broken vent, again I will have them look at these situation.
Any ideas, happened to you? Also, no matter how we drive it A/C on or off, same for econ button, getting only 25 to 25.4 mpg, city or highway, don't matter. Could it be all related?
Thanks for reading me!