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A teen can often drive a grandparent’s car, but only when three things line up: the teen’s license stage and state restrictions allow the trip, the grandparent gives clear permission for that use, and the car’s insurance policy covers the teen. None of the three can be assumed from the other two. Because licensing and insurance rules are set state by state and by each insurer, there is no nationwide yes or no. The checks below are what to confirm before the keys change hands.
Step one: confirm the teen’s license stage
Most states use graduated driver licensing (GDL). According to the National Highway Traffic Safety Administration (NHTSA), GDL has three stages: a learner’s permit, an intermediate license, and a full license. NHTSA’s guidance states: “A learner’s permit allows driving only while supervised by a fully licensed driver.” Source: NHTSA, Graduated Driver Licensing.
The restrictions that matter most for a grandparent’s car are usually set at the intermediate stage. Many states limit nighttime driving or the number of teen passengers, and some apply those limits for a set period after a license is issued. Exemptions also differ by state, so the teen’s exact license document and the state’s own rules decide what is allowed.
Massachusetts shows how specific these rules can be. Its guidance says that during the first six months with a license, a new driver under 18 may not drive with a passenger under 18 unless a qualifying adult is present, subject to the statute’s stated exceptions. That is an illustration of one state’s approach, not a rule that applies elsewhere.
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Step two: get permission for this specific use
Permission from the car’s owner is a separate question from licensing. A grandparent who lets a teen run an errand once may not be saying yes to daily use, late-night driving, or road trips with friends. Confirm the exact use: the destination, the time of day, the passengers, and how often the car will be driven. A casual “sure” is not enough if the family later has to explain what was agreed.
Step three: check the insurance, not just the permission
Insurance is where most families get surprised. Each of the following points comes from a state regulator, and each can change the result.
Permissive drivers
The Maryland Insurance Administration describes a permissive driver as someone outside the household who has permission to drive the car. It cautions that Maryland policies can include provisions that reduce permissive-driver liability coverage, and it can expose the owner to damages above the policy limits after an accident. Its consumer guidance states: “The best way to know how your policy treats permissive drivers is to read your policy, or reach out to your insurance company, agent, or broker.” Source: Maryland Insurance Administration, Resident and Permissive Drivers. This is Maryland guidance, not a universal rule.
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Household drivers and undisclosed teens
If the teen lives in the grandparent’s household, the situation is different. Maryland’s household-driver guidance says licensed household drivers, including learner’s-permit holders, should be disclosed to the insurer. It explains that undisclosed household drivers may affect coverage. In particular, collision and comprehensive coverage may be unavailable under some policy language, even when the driver reasonably believed they had permission.
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The Illinois Department of Insurance says liability coverage may pay for an accident caused by a household family member or a person driving with permission. It also warns that minimum state limits may not cover all losses. This is consumer guidance for Illinois and does not guarantee coverage under every policy.
Insurers that require listing
The Washington Office of the Insurance Commissioner says insurers may require a teen to be listed on policies at more than one residence, or may apply other arrangements. It advises parents to speak with their agent about coverage whenever a teen will drive.
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The table below shows how the most common arrangements change the questions to ask. Where a regulator gave no figure or rule for a case, the cell says so.
| Situation | What to confirm | Why it matters |
|---|---|---|
| Occasional use, teen lives in a separate household | Whether the policy treats the teen as a permissive driver and what limits apply | Permissive-driver liability can be reduced by policy terms; Maryland guidance says to read the policy or call the insurer |
| Regular use, teen lives in a separate household | Whether the insurer requires the teen to be listed | Washington guidance notes insurers may require listing; the answer depends on the insurer and the policy |
| Teen is a licensed or permit-holding household member | Whether the teen is disclosed on the policy | Maryland guidance says undisclosed household drivers may affect coverage, including collision and comprehensive |
| Teen is a permissive driver in a state with owner-liability statutes | Whether the owner could share liability for the minor’s negligence | Delaware’s statute is one example; the rule is not stated for other states in the sources reviewed |
Questions to ask the insurer before the first trip
Call the insurer or agent before the first drive, and ask in writing where possible:
- Does this policy cover this teen driving this specific vehicle with the owner’s permission?
- Must the teen be listed, given their age, where they live, and how often they will drive the car?
- Does the policy have a permissive-user limit, a driver exclusion, or any other restriction that applies?
- What liability, collision, and comprehensive protection would apply, and what limits and deductibles would the family pay?
- Does the answer change if the teen lives with the grandparent, lives in another insured household, or drives the car regularly?
This checklist reflects what state regulators say to ask. It is not a quote, and only the insurer can confirm coverage for a particular policy.
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Owner liability varies by state
Some states make the car’s owner answerable for a minor’s driving. Delaware’s code provides one example: an owner who causes or knowingly permits a minor under 18 to drive on a highway may be jointly and severally liable with the minor for damages caused by the minor’s negligence. Other states may have no such provision, or different ones. Check the owner’s home state, because that is the law that matters for the owner’s exposure.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Safety rules that apply to every trip
Driving a grandparent’s car does not change the broader safety picture. NHTSA reports that in 2024, 752 teen drivers died in crashes, and 2,320 teen drivers were involved in crashes in which someone died. In the same year, 33% of passenger-vehicle teen drivers involved in fatal crashes were speeding, and more than half of passengers killed in cars driven by teen drivers were not buckled up. These are national figures for 2024, not statistics about grandparents’ vehicles specifically.
NHTSA also reports that the most restrictive GDL programs it describes, those with at least a six-month learner holding period, a nighttime restriction beginning no later than 10 p.m., and no more than one teen passenger, were associated with 38% fewer fatal crashes and 40% fewer injury crashes among 16-year-old drivers. This figure comes from an evidence summary citing Baker et al. (2007). It describes an association across programs, not a guaranteed result for one driver or one state.
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- Everyone buckles up, front and back seats included.
- No phone use while driving, including hands-free use the state restricts.
- Follow the posted speed limit and reduce speed in poor conditions.
- Respect the state’s passenger and nighttime limits for the teen’s license stage.
If you cannot confirm it, do not lend the car yet
If the license stage is unclear, the grandparent has not agreed to the specific use, or the insurer has not confirmed coverage, the teen should not drive the car. A lawful alternative such as a ride, public transit, or a supervised trip with a fully licensed adult covers the gap until the answers are in writing.
State licensing and insurance rules change, and the sources used here are dated October 2026. Recheck the teen’s license rules with the state’s motor vehicle agency and the insurance terms with the policy’s insurer before each new arrangement.
Source notes: NHTSA (graduated driver licensing and teen driving statistics, 2024); Maryland Insurance Administration (Resident and Permissive Drivers and household-driver guidance); Illinois Department of Insurance; Washington Office of the Insurance Commissioner; Delaware Code (owner liability for minors).
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