erndaniel

Hello everyone. This is my very first post on here. I'll admit that I'am not a car expert. At least when it comes to the mechanical side of it. So forgive my lack of proper car terminology as I try and explain the problem I'm having.
My car is a 2014 V6 automatic oxford white mustang. I got it sometime last year around mid June or July. So it's barley about to be a year old.

Lately I've noticed that when ever I'm at lower speeds say 45 - 35. When ever I take my foot off the gas pedal the car has this very harsh push back feel, or a stalling loss of power feel. I don't have problem accelerating. On rare occasions it doesn't accelerate smoothly it has this harsher slower acceleration feel.
This problem does seem to happen more during the day time when it's hot here in Texas. Compared to at night when the temperatures drop and it get's cooler. I don't feel it as much as during the day time.

I would like to know some of you're thoughts as to what the problem might be.
Thank you for your time.