What rpm should it shift at
My car has an automatic transmission.
This depends entirely on your driving style, as the car will shift differently depending on your driving style. When you drive aggressively, your car will shift at a later RPM. If you hold the throttle pedal all the way down, your car won’t shift until close to redline. If you barely depress the pedal at all, it will shift very early. Under normal driving conditions, with normal acceleration, the transmission should shift somewhere between 2000rpm and 2800rpm. If it’s regularly shifting way to late or way to early, then you should check the fluid level and condition. If the fluid level and condition are ok, then you should have the shift issue diagnosed by a qualified technician, such as one form YourMechanic.