We bought a 2012 Lancer Aspire, but it is not compatible with the Samsung S4. I have spoken to both the service centre and to Mitsubishi head office and both say there is no fix and to refer to the two-line disclaimer of "Some Bluetooth devices are not compatible with the Bluetooth 2.0 interface". They say it's not their problem. People should be aware of a carmaker refusing to make their cars compatible with one of the most common phones.
It's worth checking to see that the car is compatible with your phone before you buy it.