The incident happened on Fairfield Road at around 12.25pm on Sunday 21 July 2024.
A pedestrian in his 20s was walking near the junction with Fair Street when he was involved in a collision with a black Nissan Qashqai, which stopped at the scene.
The man was airlifted to hospital with life-threatening injuries.
Enquiries into the incident are ongoing and there have been no arrests.
Witnesses are urged to call the Serious Collision Investigation Unit on 01622 798538 or email [email protected] quoting reference XX/DH/080/24.
Dashcam footage can be submitted here.