Emergency services were called to the scene just off the A198 near Longniddry, East Lothian, shortly after 3pm on Wednesday, November 24.
A large cordon has been put in place at Longniddry Bents car park 3 with the popular visitor destination expected to remain closed for some time.
It is not currently known whether anyone was hurt as a result of the blaze.
East Lothian Council confirmed that the closure is expected to remain in place throughout the night and into tomorrow.
They said: “Due to an ongoing police incident the car park at Longniddry Bents No3 is currently closed and is expected to remain so through tomorrow (Thursday 25 November).”
A Police Scotland spokeswoman added: “Emergency services are currently in attendance at car park 3 in Longniddry Bents after reports of a car fire.”
The Scottish Fire and Rescue Service confirmed they remain in attendance after being called shortly after 3pm.
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