The government says the Island's two big motorsport festivals brought in £31 million to the economy this year.
A survey into the Festival of Motorcycling by the Department for Enterprise says visitor numbers rose three per cent to more than 16,000.
It means the total number of people coming for TT or the Festival of Motorcycling rose by 3,000 to 61,272 visitors in 2017.
The average visitor to the Festival of Motorcycling stayed for a week and spent £612 on their trip.
Repairs on Peel Power Station to get underway
Manx Care doctor survey to be discussed by Tynwald
Weather warning for snow tonight
MHK queries safety at primary school in Ballabeg
Gales put two ferry sailings at risk tonight
Should the Island throw a birthday party for Barry Gibb?
Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night