Police are appealing for witnesses to dangerous driving on the Snaefell Mountain Road.
It happened on the section of road near Guthrie’s Memorial.
At about 3.05pm on Monday a silver-grey vehicle was seen to overtake a line of traffic on the series of corners leading up to Guthrie’s from Ramsey.
A police spokesman said: ‘This dangerous manoeuvre almost caused a head-on collision with a vehicle travelling in the opposite direction.
‘Police are interested to speak with anyone who was in the area at the time of the incident and may have witnessed anything.’
Anyone with any information should contact Constable Jane Irvine at Ramsey police station.