Birmingham City Council aims to check and license all limousines, stretched vehicles and special event transport operators in the city.
Officers have prepared a report to put before councillors on Wednesday.
" Many companies with stretched vehicles and special vehicles such as old fire engines are unlicensed," said Coun David Osborne, chair of the licensing committee.
"They operate for hire and reward, but are not taxis or passenger service vehicles. All these companies should protect their customers and themselves by having the right safety standards and licences for the company, the driver and the vehicle.
"It can be fun to have some sort of unusual transport for a special occasion. But we advise people to check the company first. You need to be safe."
Operators may be licensed as passenger service vehicle (PSV) operators, but these tend to be minibus and coach companies with seats for more than eight paying customers.
"The council is already in touch with a number of unlicensed chauffeur, limousine and novelty vehicle operators," said Coun Osborne.