Illinois Auto Repair Law

Educational summary only – not legal advice.

This document explains Illinois auto repair law in plain English for consumers and repair shop owners. It is based primarily on the Illinois Automotive Repair Act (815 ILCS 306) and related consumer protection statutes.

Core Statute

Automotive Repair Act (815 ILCS 306) governs: – Estimates and authorization – Billing limits – Invoice requirements – Record retention – Lien rights – Enforcement and penalties

Violations are treated as unlawful practices under the Illinois Consumer Fraud and Deceptive Business Practices Act.

Key Legal Requirements (Decoded)

1. Written Estimates

·       Consumers have the right to a written estimate before repairs begin.

·       The estimate must itemize parts and labor separately.

·       A shop may not exceed the estimate by more than 10% without customer approval.

·       If a firm (non‑itemized) price is quoted, it may not be exceeded at all without approval.

If the law is silent: Illinois law does not set a minimum dollar threshold for when an estimate is required; general consumer protection principles apply.

2. Authorization Requirements

·       Repairs must be authorized by the customer before work begins.

·       Authorization may be written or oral.

·       Oral authorization must be documented with:

o   Customer name

o   Date and time

o   Method of authorization (e.g., phone)

·       Any additional repairs or costs above the estimate require separate authorization before work is done.

3. Waiver of Written Estimate

·       A customer may waive the right to a written estimate.

·       The waiver must be voluntary and not coerced.

·       A waiver cannot be used to bypass authorization or billing rules.

4. Disclosure Timing

·       Estimates and authorization must occur before repairs begin.

·       If repairs cannot be completed within the promised time, the shop must notify the customer.

·       After notification, the customer may demand return of the vehicle (assembled or disassembled) within 3 working days.

5. Invoices

Invoices must include: – Shop name and address – Invoice date – Customer name – Vehicle description and odometer reading – Itemized parts and labor charges – Sales tax listed separately – Warranty or guarantee terms – Description of major parts installed

6. Parts Return Rules

·       Illinois law does not require automatic return of replaced parts.

·       Replaced parts must be provided on request, unless:

o   The part must be returned to a manufacturer or distributor under warranty

·       If parts must be returned, the shop must offer to show them to the customer.

If the law is silent: State law does not mandate automatic parts return; general consumer protection statutes apply.

7. Record Retention

·       Shops must keep copies of:

o   Estimates

o   Invoices

·       Records must be retained for 2 years.

·       Electronic storage and off‑site storage are allowed.

8. Payment & Vehicle Release

A customer may retrieve their vehicle upon paying for: – Authorized labor actually performed – Authorized parts actually installed – Non‑returnable parts ordered specifically for the vehicle – Storage fees only if disclosed in advance

9. Mechanic’s / Possessory Liens

·       A shop may not assert a lien for:

o   Unauthorized repairs

o   Charges that violate estimate or authorization rules

Failure to comply with the Act voids lien rights for those charges.

10. Enforcement & Penalties

Violations constitute unlawful practices under Illinois consumer fraud law.

Possible consequences include: – Consumer complaints to the Illinois Attorney General – Civil lawsuits – Court‑ordered damages – Injunctions against the shop – Loss of ability to enforce disputed charges

If the law is silent: The Act does not specify fixed dollar fines; penalties arise through consumer fraud enforcement.

What This Means for Consumers

·       You are entitled to a written estimate and clear pricing.

·       Shops cannot exceed estimates by more than 10% without approval.

·       You must authorize repairs before being charged.

·       You can request to see or receive replaced parts.

·       Unauthorized repairs do not have to be paid.

·       You can retrieve your vehicle by paying only lawful charges.

·       Violations can be reported or sued under consumer fraud law.

What This Means for Repair Shops

·       Always provide written estimates unless properly waived.

·       Document all authorizations, especially oral approvals.

·       Never exceed estimates without prior customer consent.

·       Itemize invoices clearly and completely.

·       Retain records for at least 2 years.

·       Do not rely on lien rights if authorization rules are violated.

·       Post required consumer‑rights signage in your shop.

Bottom Line

If you run a shop in Illinois or get your car repaired here: – Authorization and transparency are mandatory. – Unauthorized work is legally risky and often unenforceable. – The law strongly favors clear communication and consumer consent.

This page contains everything needed to understand Illinois auto repair law — without reading the statute itself.