
Yes, a 17-year-old can buy a car in Michigan, but they cannot complete the transaction independently. The primary hurdle is that a minor (under 18) cannot enter into a legally binding contract. This means they cannot sign a vehicle purchase agreement or an auto loan contract on their own. An adult, typically a parent or legal guardian, must be the primary signer on all legal and financial documents.
The process involves several key steps centered around adult co-signing. For financing, a lender will require a creditworthy adult co-signer who is legally obligated to make payments if the teen fails to do so. Similarly, for vehicle registration and titling, the Michigan Secretary of State (SOS) requires an adult to be listed as the owner or co-owner. When it comes to insurance, Michigan is a no-fault state with strict requirements. The car must be insured before it can be driven off the lot, and insurance companies will generally require the policy to be in the adult owner's name, with the 17-year-old listed as a primary driver—which often leads to significantly higher premiums.
| Aspect | Requirement for a 17-Year-Old in Michigan | Key Consideration |
|---|---|---|
| Legal Contract | Adult co-signer mandatory | A minor cannot be held to a contract; an adult assumes legal responsibility. |
| Auto Loan | Adult co-signer required | The lender's approval is based almost entirely on the co-signer's credit history. |
| Vehicle Title | Adult as primary or co-owner | The title must be processed through the Michigan SOS with an adult listed. |
| Insurance | Policy in adult's name, teen as driver | Michigan's high insurance costs are amplified for young, inexperienced drivers. |
| Payment Method | Full cash purchase is simpler | With cash, the only legal requirement is an adult to handle the title transfer. |
The most straightforward path is if the teen has saved enough to pay for the car in cash. Even then, the title will need to be transferred into an adult's name. The best approach is for the family to visit the dealership or private seller together, with the adult prepared to handle all paperwork and understand the long-term financial commitments, especially the impact on insurance costs.

Legally, yes, but you'll need your mom or dad heavily involved. You can't sign any of the real paperwork yourself at 17. They have to sign the loan papers if you're financing it, and the car's title will have to be in their name, or at least include them as a co-owner. The biggest shock is usually the insurance. Adding a 17-year-old to a policy in Michigan is expensive. So, you can pick out the car, but your parents are the key to making the deal happen.

From a financial perspective, the question isn't just about legality but about credit and liability. A 17-year-old has no credit history, so an auto loan is impossible without a parent co-signing, effectively using their credit. The parent becomes equally responsible for the debt. Furthermore, Michigan's insurance premiums for teenage drivers are among the highest in the nation. The real cost of the car includes this substantial ongoing expense, which must be factored into the family's budget before any purchase is made.


