Many households buy an older used car for everyday driving, whether for a teenager, a retiree, or a second vehicle that needs to be reliable without being new. That purchase is where a service contract can quietly stop being an option. Providers commonly set limits on the age of the vehicle and the mileage on it, and those limits decide which contracts you can even buy.
Write down the three numbers
Before you shop, collect the model year, the make and model, and the odometer reading on the day you plan to buy. The title or registration will confirm the year and model. Write the odometer reading exactly as it appears, then note the date you expect to sign. That gives you a fixed snapshot to measure against each provider's rules.
Read the limits at sale, not at claim
Some contracts check the vehicle's age and mileage when you buy the contract. Others set a limit that matters later, such as a mileage ceiling on the day coverage would end. Read the eligibility section closely. A contract can be available at purchase and still have a limit that cuts off coverage before it expires. Ask the seller which measurement applies and where the number is written.
Ask about renewal and extension
If you plan to keep the car for years, ask what happens when the original term ends or when the odometer passes a set point. Ask whether the provider offers any renewal, and whether that renewal is subject to the same vehicle limits. These answers change the value of the contract more than the first-year terms do.
Use the lists to narrow the field
Once you know the vehicle's age and mileage, check which providers accept a car like yours. This site publishes comparison lists sorted by mileage cap at purchase and by maximum vehicle age, along with lists for providers that take high-mileage cars. Start with those tables, then read the contract for each provider you still consider. The mileage cap page is here: Minnesota-registered providers ranked by mileage cap at purchase.