What is a window sticker?

A window sticker — officially the "Monroney label" — is the printed sheet the factory attaches to the window of every new vehicle. It has been federally required on new cars in the United States since the Monroney Act of 1958, and decades later it remains the single most authoritative summary of how a particular vehicle left the assembly line.

It lays out the standard equipment, the optional equipment and packages the original buyer selected, the EPA fuel-economy ratings, the warranty terms, the percentage of U.S./Canadian parts content, and the full price breakdown — base MSRP, each individual option, the destination charge, and the grand total. That original data is exactly what lets you confirm, years later, how a used vehicle was really configured.

Window sticker vs. build sheet

The two documents describe the same factory configuration in different ways. A window sticker is written for the buyer: plain equipment descriptions, fuel-economy ratings, warranty details, and a price breakdown right down to the destination charge.

A build sheet is the factory's own assembly record — the complete list of option codes a vehicle was built with, without pricing. WindowStickerVin.com returns the window sticker whenever one is on file, and automatically falls back to the build sheet when it isn't, so you always come away with the underlying factory data either way. For a deeper comparison, see our guide on window sticker vs. build sheet.

Why check your window sticker or build sheet?

Whether you're buying a used car, selling one, arranging insurance, or just settling a curiosity, the factory record is the most reliable way to confirm exactly how a vehicle was equipped the day it was built — far more dependable than a listing description or a faded memory.

It lets you verify the trim level, the engine and drivetrain, the option packages, and individual features, and it makes it easy to tell factory-installed equipment apart from anything a dealer or previous owner added afterward. For buyers especially, it's a quick way to make sure a seller's claims actually match how the vehicle left the line.

Any long-term experience with the ABR option?

Packages & Towing · 2017 Chrysler 300 · 720 views · 8 replies Solved

ABR — Big Horn Trailer Tow Package. This code identifies factory towing, cargo-management, or load-carrying equipment. Browse Sales Code codes →

Sean E. Apr 8, 2026 · Alberta

I am comparing configurations and one vehicle includes ABR, described as “Big Horn Trailer Tow Package. This code identifies factory towing, cargo-management, or load-carrying equipment” Owners who have it, would you consider it useful and would you look for it again?

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8 replies

Evan W. Apr 11, 2026

If the feature is listed but not working, scan all related modules before assuming it was removed. A stored fault, replacement module, or configuration mismatch can make original equipment appear absent.

3 likes

Diana N. Apr 16, 2026

For a retrofit, check the modules, wiring connectors, software configuration, and compatible part numbers first. Installing the visible component alone may not make the feature operational.

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Elena S. Apr 20, 2026

If you are documenting the vehicle, save both the original wording and the readable explanation. That preserves the factory terminology while making the record understandable later.

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Tony N. Apr 22, 2026 Accepted answer

Some codes are reused across several brands, but that does not always mean the parts are identical. Model, trim, drivetrain, and production date can all matter.

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Jessica C. Apr 25, 2026

Before buying, I would inspect the relevant component and take a photo of its label or part number. That often resolves whether the vehicle still has the factory configuration associated with ABR.

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Nicole C. Apr 26, 2026

A window sticker is helpful for customer-facing option names, while the build sheet is usually more detailed. If they disagree, the vehicle-specific dealer equipment list can help connect the sales name to ABR.

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Aaron J. Apr 27, 2026

My experience has been positive, but the benefit depends on how the vehicle is used. I would treat ABR as confirmation of the configuration, then evaluate whether that equipment matters for your driving.

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Jessica P. Apr 29, 2026

Thanks. I checked the physical equipment and it appears to match the build record. The model-year warning was the part I was missing.

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