The vehicles were impounded for being driven at speeds of up to 300 kilometres per hour and without number plates.
"Dubai traffic patrols tracked a number of reckless drivers and seized 81 vehicles," Dubai police commander-in-chief Major General Khamis al-Muzainah said in a statement yesterday, without specifying over what period these seizures were made.
Among the other allegations they face is driving without headlights switched on, according to media reports.
"Motorists who participate in racing without permission will have to pay a 100,000 dirham (USD 27,000) fine to release the confiscated vehicle, while owners of seized bikes will need to pay a 50,000 dirham (USD 13,600) fine," said the Khaleej Times newspaper.
The Roads and Transport Authority said last year that the number of vehicles in Dubai had doubled in the past eight years giving the emirate more cars per person than New York or London.