When the driver does not own the car, build the coverage map before the priority argument

Borrowing changes the factual relationship among driver, vehicle and insurance. Start with the people and contracts before relying on any slogan about which policy “follows” what.

1 Identify owner

Title, registration, rental, lease or business control.

2 Identify driver

Named insured, relative, borrower, employee, renter or additional driver.

3 Establish permission

Express, implied, restricted, revoked or disputed.

4 Identify purpose

Personal, temporary substitute, work, delivery, rideshare or rental.

5 Find every policy

Owner, driver, employer, rental, commercial, umbrella and UM/UIM.

6 Read priority clauses

Primary, excess, escape, contribution and exhaustion terms.

VictimsGuide rule: permission, ownership, purpose and coverage source are separate fact tracks. The existing Clean Claim curriculum correctly tells users to keep them separate until the coverage map is complete. fileciteturn21file1L203-L236

Colorado private-passenger insurance expressly recognizes permissive users

Under C.R.S. § 10-4-601(5), an “insured” includes a person using the described motor vehicle with the permission of the named insured. But the existence and scope of permission still must be established.

Express permission

“You may use my car.”

Direct oral or written authorization is the cleanest permission evidence. Preserve texts, emails and contemporaneous statements.

Implied permission

Conduct can matter

Prior borrowing practice, owner knowledge, key access and household custom can bear on whether permission reasonably existed.

Restricted permission

Permission can have boundaries

One trip, one day, personal use only, no delivery, no third driver, no out-of-state travel or another stated restriction can become coverage facts.

A named-driver exclusion is different from ordinary permission. Section 10-4-630 allows a complying policy to exclude claims arising from a specifically excluded driver's operation even where another insured gave that excluded driver permission.

Current Colorado law asks whether the borrower crossed into “converter” status

This is where older summaries of Colorado permissive-use law can become misleading. The modern statute expressly addresses use that becomes unauthorized or goes beyond the scope of permission.

Colorado converter analysis for borrowed vehicle permission.
Question	Current statutory inquiry
Was use unauthorized?	Would a reasonable person determine that the operation or use was unauthorized?
Was the scope exceeded?	Would a reasonable person determine that the use went beyond permission given by the named insured or resident relative?
How long was control retained?	Section 10-4-601(3) expressly identifies duration of control as a factor.
What were the circumstances?	The surrounding conduct and circumstances of the operation are expressly relevant.
Was there good faith?	The user's good-faith belief in legal entitlement is part of the statutory analysis.

Current-law correction: Wiglesworth and Raitz arose under Colorado's former No-Fault Act and are still useful history, but their broad initial-permission rule should not be quoted as though nothing changed in 2003. The current converter definition in § 10-4-601(3) expressly includes operation beyond the scope of permission.

Ramos v. Hertz, D. Colo. 2019: applying the post-no-fault statutes, the federal court concluded that the former initial-permission rule had been superseded and applied the objective converter standard. This is persuasive federal authority, not a controlling Colorado appellate decision.

The driver's own policy may add non-owned-auto coverage — but occasional borrowing matters

Personal auto policies commonly extend some liability protection when the named insured drives a vehicle he or she does not own. The exact definition, permission requirement, regular-use exclusion and other-insurance clause control.

Occasional borrow

Classic non-owned-auto situation

A friend's vehicle borrowed for a discrete trip may fit ordinary non-owned coverage, subject to the policy's actual language and permission requirements.

Regular use

A second car in practice can be different

Company cars, roommate vehicles, family cars kept at the house and long-term loans can implicate exclusions for vehicles furnished or available for regular use.

Temporary substitute

Disabled owned vehicle may trigger another definition

A short-term replacement while an insured vehicle is being repaired can be treated differently from a general borrowed or regularly available vehicle.

Waggoner v. Wilson: the Colorado Court of Appeals treated the ability to obtain a vehicle only after requesting keys and specific permission each time as inconsistent with the vehicle being broadly “available” for frequent or regular use under that policy.

Allstate v. Willison: actual ownership matters. A vehicle owned through the insured's sole proprietorship could not be converted into a “non-owned” auto merely by using a business trade name.

Colorado does not automatically make the owner's insurer primary

The strongest modern authority is Shelter Mutual v. Mid-Century. Colorado's mandatory-insurance statutes require coverage to exist; they do not dictate that the vehicle owner's insurer must always pay before the driver's insurer.

Colorado owner and driver policy priority analysis.
Owner policy	Driver policy	Potential result
Primary	Excess for non-owned autos	Owner policy may pay first under the contracts.
Excess	Primary	Driver policy may pay first if the clauses validly create that order.
Excess	Excess	Conflicting clauses may be mutually repugnant; Shelter treated the policies as co-primary.
Coverage denied by one policy	Coverage accepted by another	Do not stop at the first position; analyze whether the denial is valid and whether other layers remain.

Shelter Mutual v. Mid-Century, 246 P.3d 651: the father owned and insured the borrowed vehicle; the son had his own personal policy covering him as a non-owner operator. Both insurers used excess clauses. Colorado's Supreme Court held there is no statutory owner-policy-primary rule; because the two excess clauses conflicted, both carriers were co-primary.

Permissive-driver step-down provisions require scrutiny. Shelter refused to enforce the reduction in that case because the insurer failed to give adequate notice of the reduced permissive-user limit on renewal. Current Regulation 5-2-17 requires conspicuous disclosure of a private-passenger step-down provision.

A dealer or repair-shop loaner can involve a different policy architecture

A service-department loaner is not automatically governed by the same policy structure as borrowing a friend's personal car.

Loaner agreement

Read the driver's authorization

Identify who may operate the loaner, permitted use, return date, geographic restrictions and any insurance representations.

Garage / dealer policy

Obtain the commercial contract

Section 10-4-608(1)(d) exempts garage, automobile sales, repair-shop, service-station and similar operation-hazard policies from Part 6's private-passenger framework.

Driver policy

Non-owned coverage may still matter

Obtain the driver's policy and compare its non-owned-auto and other-insurance provisions with the dealer/garage policy.

Loaner workflow: obtain the repair order, loaner agreement, dealer/garage declarations and policy, driver's policy, permission record and every coverage-position letter before deciding priority.

Rental vehicles require their own contract-and-insurance audit

Colorado's legislature has deliberately separated motor-vehicle rental agreements and rental-company insurance products from much of the ordinary private-passenger Part 6 framework.

Colorado rental vehicle coverage products and legal roles.
Item	What it generally does	What to obtain
Rental agreement liability protection	Defines contractual liability protection, authorized drivers and allocation of rental risks.	Complete signed rental agreement and incorporated terms.
Supplemental liability insurance	May increase third-party liability protection under a separate insurance policy.	Election, certificate/policy, insurer name, limits and claims administrator.
Supplemental UM/UIM product	May provide first-party occupant protection if purchased under the operative supplemental policy.	Actual supplemental policy, insured definition, limits and exclusions.
Loss/collision damage waiver	Generally allocates responsibility for physical damage to the rental vehicle; not the same as third-party liability insurance.	Waiver election and contractual exclusions/conditions.
Driver's personal auto policy	May provide non-owned/rental liability, physical-damage or other coverage depending on the form.	Declarations, full policy, non-owned/rental and other-insurance clauses.
Credit-card rental benefits	May provide limited property-damage or related benefits subject to card terms and payment requirements.	Benefit guide, reservation/payment record and claim requirements.

Rental UM/UIM is not governed by the ordinary mandatory-offer rule. C.R.S. § 10-4-609(1)(b) states that the ordinary subsection requiring UM/UIM coverage unless rejected does not apply to motor-vehicle rental agreements or rental companies. Determine what was actually purchased rather than assuming the renter received the same UM/UIM structure as a personal Colorado auto policy.

Hertz Corp. v. Babayev, 2026 CO 26: where renters purchased supplemental insurance provided through a third-party insurer, the Colorado Supreme Court held that the rental company itself did not become the statutory or common-law insurer. The operative insurer remained the insurer named on the supplemental policy.

The Graves Amendment blocks pure rental-owner vicarious liability — not every claim against a rental company

Federal law limits state-law claims that attempt to impose liability on a commercial rental or leasing company merely because it owns the vehicle.

Protected

Ownership alone

49 U.S.C. § 30106 generally bars vicarious liability based solely on the rental/leasing company's ownership when statutory conditions are met.

Not protected

Owner's own negligence

The statute expressly does not immunize negligence or criminal wrongdoing committed by the rental/leasing owner or affiliate itself.

Preserved

Financial-responsibility law

Graves does not supersede state insurance/financial-responsibility standards within the federal statute's express savings provisions.

Do not plead around Graves by relabeling ownership. Any direct-negligence theory against a rental company needs facts supporting the company's own conduct — not simply the renter's negligence plus the company's title to the car.

A private vehicle owner can have independent liability for negligent entrustment

Permission may create insurance coverage. Negligent entrustment is a different tort question: did the person controlling the vehicle supply it to someone the supplier knew or should have known was likely to use it dangerously?

Colorado negligent entrustment factors for a borrowed motor vehicle.
Element / issue	Colorado inquiry
Supply / permission	Did the owner or other person with control supply or permit use of the vehicle?
Control	Did the alleged entrustor possess the vehicle or have the right to control its use at the time of entrustment?
Knowledge	Did the supplier know or have reason to know the driver was likely, because of youth, inexperience or other circumstances, to use it dangerously?
Unsafe use	Did the entrusted driver's conduct create the unreasonable risk that caused the injury?
Causation / damages	Did the negligent entrustment cause legally compensable injury?

Hasegawa v. Day / Casebolt v. Cowan: Colorado recognizes negligent entrustment based on Restatement principles. The tort is based on the supplier's own negligent entrustment, not automatic vicarious responsibility for the driver's negligence.

Unlicensed does not automatically equal incompetent. Later Colorado authority such as Beasley v. Best Car Buys cautions that lack of a driver's license, standing alone, does not necessarily establish that the supplier knew or should have known the person was an unsafe driver.

Borrowed / rental vehicle evidence checklist

Vehicle title and registration.
Owner's declarations and complete policy.
Driver's declarations and complete policy.
Non-owned-auto, temporary-substitute and regular-use provisions.
Other-insurance / primary / excess / escape clauses.
Named-driver exclusions.
Permission texts, emails and witness statements.
Who gave keys and under what conditions.
Prior borrowing frequency and duration.
Where the vehicle was normally garaged.
Trip purpose and any deviation from permitted use.
Employer/business/delivery/rideshare facts.
Dealer loaner agreement and repair order, if applicable.
Dealer/garage policy and coverage position.
Complete rental agreement and incorporated terms, if applicable.
Authorized-driver list.
Supplemental-liability and supplemental-UM/UIM elections.
Loss/collision damage-waiver election.
Rental supplemental insurance policy and insurer identity.
Credit-card benefit guide and proof card was used for rental.
Employer/commercial/hired/non-owned auto policy.
Umbrella/excess policies.
Injured person's own and household UM/UIM policies.
All coverage reservation and denial letters.

Existing Clean Claim principle retained: a borrowed vehicle may be borrowed, rented, hired, employer-provided, a temporary substitute, regularly available, used without permission or used for business. The current curriculum correctly tells citizens not to assume that “borrowed” answers the insurance question. fileciteturn21file0L34-L59

Colorado borrowed and rental vehicle authority map

Shelter Mutual v. Mid-Century · 246 P.3d 651 (Colo. 2011)

Owner policy not automatically primary

Current tort-system authority holding that Colorado mandatory-insurance law does not impose a vehicle-owner-policy-primary rule; competing excess clauses were mutually repugnant and the two policies became co-primary.

Colorado Supreme Court · core priority authority

Hertz Corp. v. Babayev · 2026 CO 26

Rental supplemental insurer identity

Current Colorado Supreme Court authority holding that a rental company does not itself become an insurer merely by offering supplemental insurance supplied under a third-party insurer's policy.

Colorado Supreme Court · current 2026 authority

Waggoner v. Wilson · 507 P.2d 482 (Colo. App. 1972)

Regular-use / non-owned auto

Useful policy interpretation authority distinguishing a truly available regular-use vehicle from one requiring keys and specific permission each time.

Colorado Court of Appeals

Allstate v. Willison · 885 P.2d 342 (Colo. App. 1994)

Actual ownership controls

A vehicle owned through the insured's sole proprietorship was not a “non-owned” automobile under the driver's personal policy.

Published Colorado Court of Appeals

Hasegawa v. Day · 684 P.2d 936 (Colo. App. 1983)

Negligent entrustment

Expressly adopts negligent entrustment in Colorado under Restatement § 308 principles; liability is based on the supplier's own negligence, not vicarious liability.

Published Colorado Court of Appeals

Casebolt v. Cowan · 829 P.2d 352 (Colo. 1992)

Supplier/control framework

Colorado Supreme Court authority applying Restatement §§ 308 and 390 to negligent entrustment and focusing on control plus knowledge of foreseeable misuse.

Colorado Supreme Court

Wiglesworth · 917 P.2d 288 / Raitz · 960 P.2d 1179

Historical initial-permission cases

Important historical Colorado No-Fault Act cases, but the post-2003 statutory converter definition requires current-law qualification before using their broad rule.

Historical statutory context · do not overstate

Ramos v. Hertz · D. Colo. No. 17-cv-02576 (2019)

Modern converter analysis

Federal court applying Colorado law concluded the former initial-permission rule was superseded by §§ 10-4-601(3) and 10-4-623's converter framework.

Federal persuasive authority

Allstate v. Avis · 947 P.2d 341 (Colo. 1997)

Rental/driver competing excess clauses

Historical rental-car authority whose other-insurance reasoning was later expressly carried into Colorado's current tort system by Shelter Mutual.

Colorado Supreme Court · historical rental context

Primary authority map

C.R.S. § 10-4-601(3), (5) Converter / insured / permissive user

Current definitions governing unauthorized or beyond-scope operation and permissive-user status.

Official CRS portal →

C.R.S. §§ 10-4-619, 620, 623 Compulsory liability / conditions and exclusions

Owner's complying-policy obligation, minimum liability protection and current converter exclusion framework.

Official CRS portal →

C.R.S. § 10-4-630 Named-driver exclusion

Allows excluded-driver treatment even where operation otherwise occurred with express or implied permission.

Official CRS portal →

Regulation 5-2-17 · 3 CCR 702-5 Permissive-user step-down disclosure

Requires conspicuous disclosure when a private-passenger policy contains a provision reducing limits for certain insureds.

Colorado Code of Regulations →

C.R.S. §§ 10-4-608, 10-4-609(1)(b) Rental vehicle statutory separation

Rental agreement/self-insurance exemptions from Part 6 and rental-company exclusion from the ordinary UM/UIM-offer subsection.

Official CRS portal →

49 U.S.C. § 30106 Graves Amendment

Federal rental/leasing owner vicarious-liability limitation with exceptions for the owner's own negligence/criminal wrongdoing and state financial-responsibility law.

United States Code →

2011 Colorado Supreme Court Shelter Mutual v. Mid-Century

Primary/excess priority, permissive-driver step-down notice and current tort-system treatment of competing other-insurance clauses.

Colorado Supreme Court opinions →

2026 CO 26 Hertz Corp. v. Babayev

Current law distinguishing a rental company from the insurer that actually issues supplemental insurance.

Colorado Supreme Court opinions →

VictimsGuide resources supporting Guide 13

Guide 03 — Find Every Policy Owner, driver, employer, commercial, rental and excess policies should be mapped before release. Guide 06 — Policy Interpretation Read non-owned-auto, temporary-substitute, regular-use and other-insurance language. Guide 07 — Coverage Defenses Named-driver, permission, business-use and other coverage defenses require exact classification. Guide 04 — UM/UIM Evaluate first-party protection when liability coverage disappears or proves inadequate. Sample Colorado PPA Policy Locate declarations, insured definitions, non-owned-auto language, exclusions and endorsements. Clean Claim System Map permission, ownership, purpose and every potential coverage source in one record.

Frequently asked questions

If I lend my car to a friend, is the friend automatically insured under my Colorado policy?

Colorado's private-passenger statutory definition of “insured” includes a person using the described vehicle with the named insured's permission. But named-driver exclusions, converter status, policy conditions, limits and the particular policy must still be checked.

Does Colorado still use the old rule that initial permission covers every later deviation?

Do not assume so. Wiglesworth and Raitz arose under the former No-Fault Act. Current § 10-4-601(3) expressly defines a converter to include objectively unauthorized use or operation beyond the scope of permission and requires a fact-specific good-faith analysis.

Is the vehicle owner's insurance always primary over the borrower's insurance?

No. Shelter Mutual expressly rejected a mandatory owner-policy-primary rule under Colorado's current tort system. Read both policies' other-insurance clauses.

Can my own policy cover me while I drive a friend's car?

Often a personal policy provides liability coverage for qualifying non-owned autos, but the policy may contain permission, regular-use, business-use or other exclusions and may state that its coverage is excess.

What if I borrow the same car every day?

A regular-use exclusion may become important. Frequency, key access, duration, control, where the vehicle is kept and whether permission must be obtained for each use are all relevant under the policy.

Is a dealer loaner treated exactly like a friend's personal car?

Not necessarily. Dealer, garage and repair-operation policies are expressly outside portions of Colorado's ordinary private-passenger Part 6 framework. Obtain the loaner agreement, garage/dealer policy and driver's personal policy.

Does a Colorado rental company have to offer ordinary UM/UIM like my personal auto insurer?

Section 10-4-609(1)(b) says the ordinary mandatory UM/UIM-offer subsection does not apply to motor-vehicle rental agreements or rental companies. Determine what supplemental coverage was actually purchased.

If Hertz sells supplemental insurance, is Hertz itself my insurer?

Not merely for that reason. Hertz v. Babayev, 2026 CO 26, holds that a rental company offering supplemental insurance supplied by a third-party insurer is not thereby transformed into the statutory or common-law insurer.

Can I sue a rental company just because it owned the rental car involved in the crash?

The Graves Amendment generally bars liability imposed solely because a commercial rental/leasing company owns the vehicle, if its statutory conditions apply. It does not immunize the company's own negligence or criminal wrongdoing.

What if the liability insurer denies the borrowed driver was covered?

Get the written coverage position, owner's policy, driver's policy and permission evidence. Then evaluate other owner/employer/commercial coverage and promptly preserve the injured person's UM/UIM rights.

Borrowed / rental vehicle coverage worksheet

Worksheet for analyzing Colorado borrowed, loaned and rental vehicle coverage.
Field	Record	Coverage question
Vehicle owner	__________	Who held title or rental/lease rights?
Driver	__________	Named insured, relative, borrower, employee or renter?
Permission source	__________	Who authorized operation?
Permission scope	__________	Any time, place, driver, purpose or duration limits?
Converter issue	__________	Would a reasonable person view the actual use as unauthorized/beyond scope?
Owner policy	__________	Does it insure this driver and at what limit?
Driver policy	__________	Does non-owned/temporary-substitute coverage apply?
Regular-use issue	__________	How often and how freely was the vehicle available?
Other-insurance clauses	__________	Primary, excess, escape or pro-rata?
Named-driver exclusion	__________	Is the actual operator specifically excluded?
Trip purpose	__________	Personal, work, delivery, rideshare or mixed?
Dealer/loaner policy	__________	Does a garage/commercial policy apply?
Rental agreement	__________	Who is authorized and what protection was included?
Supplemental rental insurance	__________	Who is the actual insurer and what limits/products were purchased?
Damage waiver	__________	What rental-vehicle physical-damage obligations were waived?
Employer/commercial policy	__________	Does work use add hired/non-owned or other coverage?
Umbrella/excess	__________	What attachment/exhaustion requirements apply?
UM/UIM	__________	What first-party protection remains if liability coverage fails?

Closing principle: when the driver does not own the vehicle, do not ask only “whose insurance?” Ask who owned it, who permitted it, how it was being used, what every contract says, which insurer is primary or excess, and what other coverage survives.

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