Cars Exhaust sound Bug

Anyone else noticed that the cars exhaust sounds different the first time you enter a new car and upgrade it, to what it sounds like when you drive the exact same car after a game restart? Is there any way that can be changed in future updates? Seems to be a bug and i really like the pops and bangs from the new cars.

I have the same problem, and the next time you wanna drive it, it only gives one pop, wondering what’s the cause