Vehicle & Driving · Auto Repair
Auto Repair Rights in Illinois
What a repair shop in Illinois must tell you before it works on your car, how far a bill can go over the estimate, and what to do about an overcharge, cited to the statute.
Your rights and the rules in Illinois
The estimate rules, going over the estimate, your old parts, and how the rule is enforced.
| Written estimate | Illinois does not force a written estimate on every job. Instead, no work costing more than $100 may be started without the consumer first authorizing it. Before that authorization, the shop must disclose whether it will give a written estimated price for the specific repair or a written price limit it will not exceed. So a written estimate is tied to the $100 authorization step and to what you ask for at that point, not automatic on every ticket. |
| Going over the estimate | If the shop gives an itemized estimate of parts and labor, the final bill cannot exceed that estimate by more than 10% without your oral or written consent. If the shop instead gives a not-to-exceed price limit, it cannot go over that limit at all. Any charge for parts or labor beyond the estimate has to be separately authorized by you before the work is done. |
| Get your old parts back | You have a right to get the replaced parts back, but you have to ask for them at the time the work order is taken. On that request the shop must return the old parts when the job is done, except parts it must send back to the manufacturer or distributor under a warranty or exchange agreement. The shop does not have to show a part when no charge is made for the replacement. You must be told of this right before you sign or authorize the work. |
| Itemized invoice | When the job is done the shop must give you a legible invoice that lists parts and labor separately, with subtotals for each, the sales tax, the odometer reading, your name, the vehicle description, and the terms of any guarantee. The shop keeps a copy for two years. |
| Shop's lien on your car | A repair shop can hold your car under a possessory lien until you pay for labor actually performed, parts actually installed, non-returnable parts ordered for your car, and any disclosed storage charges. But a shop that fails to follow the Act’s estimate, authorization, invoice, and disclosure rules is barred from asserting a lien for the amount of the unauthorized parts or labor. |
| How it is enforced | A knowing, persistent pattern of violating the Automotive Repair Act is treated as an unlawful practice under the Illinois Consumer Fraud and Deceptive Business Practices Act, and all of the Attorney General’s remedies under that Act apply. You can file a complaint with the Illinois Attorney General’s Consumer Fraud Bureau, and a Consumer Fraud Act claim can carry actual damages, and in some cases punitive damages and attorney fees. |
| Statute | 815 ILCS 306/15, 306/25, 306/50, 306/75 (Automotive Repair Act) |
What you can do right now
Concrete, neutral steps if a Illinois shop overcharged you or did work you never approved. This is legal information, not legal advice.
- Ask for a written estimate up front
Before any work over $100 begins, ask the shop for a written estimated price or a written price limit for the specific repair, and keep your copy. This is what the 10% cap is measured against.
- Refuse to pay unauthorized overages
If an itemized bill runs more than 10% over the estimate, or over a stated price limit at all, and you never approved the extra work, say so in writing. The shop cannot claim a lien for parts or labor you did not authorize.
- Ask for your old parts at drop-off
To get the replaced parts back, request them when the work order is written, not after. That lets you confirm the parts were actually replaced and matches the invoice.
- File with the Illinois Attorney General
If the shop will not fix an improper bill, file a complaint with the Illinois Attorney General’s Consumer Fraud Bureau, which enforces the Automotive Repair Act through the Consumer Fraud Act.
If a shop billed you for work you never approved, you can file a complaint. This is the official channel that handles auto-repair disputes.
→ Illinois Attorney General: auto sales and repairsThis is general legal information, not legal advice. Keep every estimate, invoice, and text message, and confirm the exact rule that applies before you refuse to pay or authorize more work.
What Illinois drivers get wrong
Illinois runs its shop-dispute rules through the Automotive Repair Act, 815 ILCS 306, rather than through general consumer law alone. The anchor is not a flat estimate mandate but an authorization line: no repair costing more than $100 can start without your say-so, and before you authorize it the shop must tell you whether it is giving an itemized written estimate or a firm price limit. If it gives an itemized estimate, the final bill cannot run more than 10% over it without your consent. If it gives a price limit, it cannot exceed that limit at all. You can ask to keep the old parts, but you have to ask when the work order is written. When the job is done the shop owes you an itemized invoice. The teeth come from the Consumer Fraud Act: a shop that skips these steps loses its lien on your car for the unauthorized amount, and the Attorney General can pursue it.
Common questions
Does an Illinois shop have to give me a written estimate before repairs?
Not on every job automatically. Under 815 ILCS 306, no work costing more than $100 can begin without your authorization, and at that point the shop must disclose whether it will give you an itemized written estimate or a written not-to-exceed price. Ask for the written estimate before you approve the work.
How much over the estimate can a repair shop charge in Illinois?
If the shop gave an itemized parts-and-labor estimate, the final bill cannot exceed it by more than 10% without your oral or written consent. If the shop gave a firm price limit instead, it cannot go over that limit at all. Extra work beyond the estimate has to be separately authorized by you first.
Can I get my old parts back after an Illinois repair?
Yes, if you ask at the time the work order is taken. The shop then must return the replaced parts when the job is finished, except parts it has to send back under a warranty or exchange agreement, and except parts you were not charged for. The shop must tell you about this right before you authorize the work.
Can an Illinois shop keep my car if I dispute the bill?
A shop can hold the car under a lien until you pay for the labor performed, parts installed, non-returnable special-order parts, and disclosed storage. But if the shop broke the Act’s estimate, authorization, invoice, or disclosure rules, it is barred from claiming a lien for the unauthorized parts or labor.
How do I report an Illinois auto repair shop?
File a complaint with the Illinois Attorney General’s Consumer Fraud Bureau. A knowing, persistent pattern of violating the Automotive Repair Act is treated as an unlawful practice under the Consumer Fraud and Deceptive Business Practices Act, which can carry actual damages and, in some cases, punitive damages and attorney fees.
Not legal advicePlainStatute provides plain-language summaries of public law for general information only. This is not legal advice. Statutes change; always confirm current requirements with the official source linked above before acting.