Does my iPhone 4 work with Hands Free Profile (HFP)?

My new car is supposed to send/receive text messages via the new fandangled stereo/navigation unit. The manual says the phone must be compatible with "Hands Free Profile (HFP)" or Message Access Profile (HFP)". Does the iPhone4 use/have this? New car is a 2012 Subaru Impreza with the Nav system.

Thanks.