Free Illinois Odometer Disclosure Bill of Sale
Illinois vehicle transfers are subject to the federal Truth in Mileage Act (TIMA), 49 U.S.C. § 32705, requiring odometer disclosure on all non-exempt transfers. Exempt vehicles: model year 2010 and older (2011-and-newer models stay covered to their 20th model year) plus anything with a GVWR beyond 16,000 lbs. Illinois captures the odometer disclosure on the Certificate of Title, where the seller signs and prints their name and the buyer signs. The buyer also files Form RUT-50 (Private Party Vehicle Use Tax Transaction), which is required for private-party sales; IDOR asks for the odometer reading when RUT-50 is filed online, so use the same mileage on both.
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Illinois Odometer Disclosure Bill of Sale — What You Need to Know
Illinois Odometer Disclosure Sale — Step-by-Step Checklist
- Check the model year first — only 2011-and-newer vehicles (GVWR 16,000 lbs or under) owe the disclosure; 2010 and older are exempt.
- Read and record the exact odometer mileage on the date of the sale.
- On the title's odometer section, leave both boxes blank if the reading is the actual mileage, or check 'in excess of its mechanical limits' or 'not the actual mileage'.
- Seller completes, signs, and dates the odometer disclosure section on the Illinois Certificate of Title.
- Buyer countersigns the acknowledgment section on the title.
- Complete Illinois Form RUT-50 (Private Party Vehicle Use Tax Transaction) — use the same odometer reading as on the title.
- Apply for title at an Illinois Secretary of State facility within 20 days after the vehicle and the signed title are delivered; the private party vehicle use tax is paid with RUT-50 (due within 30 days of purchase).
- Both parties retain copies of the title and RUT-50.
Common Pitfalls
- Selling 'as-is' does not waive odometer disclosure obligations under federal TIMA or Illinois law.
- Entering different mileage figures on the title and on RUT-50 — use the same reading on both.
- Missing the deadlines: the title application is due within 20 days after delivery of the vehicle and signed title, and RUT-50 within 30 days of purchase.
- Forgetting that Illinois requires Form RUT-50 in addition to the title — the title alone is not sufficient for private-party transfers.
- Leaving the odometer reading blank on the title; each seller must write the reading, the date of transfer, and their printed name and signature, plus the buyer's printed name and address.
- Accepting a title with altered or erased mileage. The Secretary of State's odometer fraud brochure says alterations or eraser marks void the title, and the car's current mileage should be higher than the reading shown on it.