A second car in a household often gets far less driving than anyone expects. It sits in the drive for days, starts when the main car is in the shop, and then goes back to waiting. That pattern fits poorly with how many service contracts are built, because many of them assume a steady stream of miles. Before you buy protection for a backup vehicle, you need to know which of the contract's limits will run out first.

Two clocks, and the slow one may not be the one you expect

Most vehicle service contracts limit their term in two ways at once, by the age of the car or the months since the contract started, and by the miles on the odometer. The contract ends when either limit is reached. A car that is driven lightly usually reaches the time limit while the mileage limit is still far away, so the calendar is the clock to plan around. Read the term section and find out which limit is listed first, whether the contract says it ends at whichever comes sooner, and where the starting point for each limit is measured from.

Does the clock run while the car sits?

For a backup car this is the question that matters most. A time-based term usually runs from a start date written in the contract, and it generally keeps running whether or not the car moves. Some contracts also say what happens when a vehicle is not in regular use, such as whether the car must be run or driven a minimum distance to keep coverage in force, or whether a long stretch of non-use affects a claim. Ask the seller to point to the sentence that covers this. If you cannot find one, ask in writing what the contract says about a vehicle that is parked for long stretches.

Sort the contract's duties from the car's duties

A car that sits still is not a car that needs no care. Tires, fluids, and the battery still age, and the owner's manual still lists the checks that keep the vehicle in the condition the contract assumes. This guide does not walk through each part. The job here is narrower: write down who is responsible for the checks during idle periods, whether the contract treats a failure that began during a long stretch of non-use as an ordinary breakdown, and what proof of those checks the claims process will ask for. A missing record can cause more trouble than a missing check.

The sudden-need problem

A backup car is bought for the day the main car is unavailable. That is also the day a breakdown is most inconvenient, and it may land in the early part of the contract, when a waiting period may still apply. Before you buy, find the waiting period and the start rule, and decide what you would do if a repair were needed in the first days after purchase. Ask whether the contract provides a rental or ride while a claim is pending, and if it does, whether that benefit has its own limits. Then ask whether the protected car would actually be the one you drive that week, or whether the main car will still be the one the household depends on.

Cancellation and transfer for a car you rarely drive

Low mileage can make an early cancellation look better on paper, but the refund is usually figured from both time and use, so a car that has barely been driven may still leave a large share of the contract's time unused. Check how cancellation is calculated before you pay. Also ask who can take over the contract if the backup car is later sold or handed to another household member. A transfer rule that suits a daily driver may not suit a vehicle that changes hands only once every few years.

Questions to put to the seller

Get written answers to each of these before you sign:

  • Which limit ends the contract first for a car driven this lightly, the time or the miles?
  • Where does the term start, and where is that written?
  • Does the contract say anything about a vehicle that is parked for long periods?
  • Is there a waiting period, and does a repair during it get refused?
  • What is the process when a car that is not in daily use is found to have a problem?
  • How is cancellation calculated, and does low use change the result?
  • Who can take over the contract if the car changes households?

Before you sign

Ask for the sample contract if the seller offers one, and read the term, the start rule, and the non-use language yourself rather than relying on a summary. Our list of vehicle service contract companies that post a sample contract you can read first shows which companies make their contracts available ahead of purchase. Our methodology page explains how the figures on this site are compiled, so you can check our work against the contract in front of you.