Adam Smith, 19, was killed when a Ford Fiesta crashed on Sunday while traveling on the A77 near Ballantrae at around 12:40am.
Police Scotland He said he lived in the area near the accident.
Sergeant Stewart Taylor urged anyone who saw the crash or has information that may help officers with their investigation to contact police.
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“Our investigations are ongoing and we are appealing to anyone who was in the area and witnessed the crash or who may have information that could help, and who has not yet spoken to officers to reach out,” he said.
“I would also call on anyone with dashcam footage to contact us.”
Police Scotland said anyone who can help them with their investigation should call 101 and quote incident number 207 or May 14.