I just bought a 2010 toyota corolla and after very conflicting results from an internet search I was unsure if it would work. A lot of people told me it probably would not work.
The base, stock bluetooth system is called bluelogic or something like that and it does support A2DP.
After connecting the device it plays any sound from the device, except only through the front two speakers of the car (can't tell when driving). I'm not a big audio quality person but the sound seems fine. No issues.