Ill. Admin. Code tit. 14 § 475.310
It is an unfair or deceptive act to advertise the total price of a motor vehicle without including in the advertised price all costs to the purchaser at the time of sale, or which are necessary or usual prior to delivery of such vehicle to the purchaser, including any costs of delivery, dealer preparation and any other charges of any nature; provided, however, taxes, license and title fees and a documentary service fee, as defined herein, may be excluded from the advertised price if clearly disclosed in the advertisement that these costs are excluded from the advertised price. Purchasers shall be able to purchase all vehicles described by the advertisement at the advertised price.
Ill. Admin. Code tit. 14, § 475.310
Amended at 25 Ill. Reg. 4819, effective March 20, 2001