A car’s in-service date is the day it was first sold to its original owner. If you’re shopping for a certified pre-owned (CPO) car or hoping for remaining factory coverage, this date matters.
Why the In-Service Date Is Important?
The in-service date matters because it’s the date the factory warranty starts. It can also determine when other perks began, such as free scheduled maintenance (if included), factory trials of features like satellite radio, and certain dealer-installed extras.
Using the in-service date is more reliable than model year alone: A 2021 model could have gone into service in 2020, 2021, or even later.
The date can also affect certified pre-owned warranty coverage. Some CPO warranties begin when you buy the used car, but many start from the vehicle’s original in-service date, so it helps you know exactly how much coverage you’ll get.
How to Find It?
There’s no simple calculation. The most reliable approach is to get the vehicle identification number (VIN) and call the brand’s dealership service department to confirm the in-service date. If they’re closed, a vehicle history report (AutoCheck or a Carfax warranty check) often lists the original sale date, which can provide a good estimate even if it doesn’t perfectly match the dealer’s official record.
Editor’s Note: We have updated this article since its initial publication.
Chrysler denied coverage on a warranty covered repair for the reason that the vehicle was inspected on December 13th, 2023. The inservice date was December 13th, 2018. However, Chrysler warranty says that the warranty expires one day before the inservice date. Eventhough the contract for warranty says expiry date 12/31/2023. The warranty case manager I had says that yes that is true but the expiry date is the day before. Does this make sense??
Thanks for reading, John. It makes sense that a 5-year warranty would expire on the day before the anniversary of the car’s inservice date. The first year of coverage was 12/13/2018-12/12/2019; the second year of coverage was 12/13/2019-12/12/2020; the third year of coverage was 12/13/2020-12/12/2021; the fourth year of coverage was 12/13/2021-12/12/2022; the final year of coverage was 12/13/2022-12/12/2023. What doesn’t make sense is why your paperwork indicates 12/31/2023 as the end of coverage. I’ve never heard of warranty coverage for a calendar year — unless the warranty period started on January 1.
I’m in same predicament. I bought a supposedly new vehicle yet was used by the manufacturers representative. I purchased it in NJ but was told that the manufacturer’s rep started using it in Illinois. It had 3700 miles on it when I purchased it. I got temp tags and titled it in PA. The mileage when it first had mechanical problems was 24,167. NJ has 24 months, 24,000 mile Lemon Law. I need to file a claim with NJ consumer Affairs. Question 1 is this vehicle considered new or used? And secondly can I subtract the 3700 miles put on it by the retailer or corporate rep who drove it from IL to NJ?
I was sold an extended warranty on a Certified Used vehicle from Subaru. They did not explain to me that the extended warranty started on the original sales date nor is it written on any of the contracts. Do I have a case?
If a dealer has activated a new car warranty (by virtue of the dealer’s own use of the vehicle) before selling the car to a first buyer, wouldn’t the dealer have a duty to disclose that “activation” to the buyer?
Is there any way for a prospective buyer to discover this “activation” independently of the dealership?
I would like to know that also. CarFax has a disclaimer concerning ownership that is unreported.
What if your in-service date was 6 months prior to you buying it and the dealership sold it to me as new. Could it have been owned before even if the titling history equals “1”, which means me?
You are first owner. Dealerships can activate warranty and not title the vehicle. It’s sold new to you because the car was never titled. Warranty has nothing to due with title.
When the dealer used the car before you bought it, it wasn’t registered and they would have been using dealer transport temp tags.