14 Ill. Adm. Code 475.520
Rental Vehicles
Section 475
Section 475.520 Rental
Vehicles
It is an unfair or deceptive act
to advertise any vehicle which has been leased or rented on an individual or
fleet basis without clearly and conspicuously disclosing:
a) the year, make and model; and
b) the fact that such vehicle has been previously titled, using
the word "used".