Did an oil change and changed front brake pads. Also noticed a weird sound during acceleration. At first I thought it was the gearbox making the noise because it seemed to be making it right before shifting, but I put it in manual mode and accelerated all the way through the rev range and it seems to be making it around 2500 rpm and not in any way connected to gear changes. Also, it seems to be coming from the rear of the car.
Didn't think of recording it but I found only one video on Youtube with similar noise:
It doesn't seem to be the parking brake cables rubbing the driveshaft case, does it? Almost sounds like an owl.