# A low car payment can hide a costly package of add-ons

Separate the vehicle price, optional products and financing cost before comparing deals.

[Canonical HTML page](https://nosecrets.app/en/stories/car-dealer-addons-out-the-door-price)

Published by: [No Secrets Research](https://nosecrets.app/en/about#methodology)
Added: 2026-10-20
Topic: Consumer

## Scope and context

Applies to: United States · dealership purchases and financing
Time context: FTC consumer guidance checked October 20, 2026
Sources checked: 2026-10-20

Consumer comparison guidance, not a claim that all add-ons are useless or that one new rule bans every fee. Insurance requirements and contracts vary.

## Optional products are separate purchases

The FTC lists products such as rustproofing, fabric protection and service contracts as add-ons that increase the bill. Its guidance says buyers can decline or negotiate them. Ask the dealer to identify each item and its cash price.

[1: FTC](https://www.ftc.gov/media/79917)

## Get the out-the-door price

FTC used-car guidance recommends obtaining the out-the-door price in writing before discussing financing. A low monthly payment can result from a longer loan and more total interest. Compare the term, annual percentage rate and overall amount paid.

[2: FTC](https://consumer.ftc.gov/articles/buying-used-car-dealer)

## Audit the final contract

Check that the final contract contains only the add-ons you accepted, at the agreed prices. Our checklist is to retain the original quote and financing offer, then compare every extra line before signing rather than relying on the monthly-payment headline.

[1: FTC](https://www.ftc.gov/media/79917) · [2: FTC](https://consumer.ftc.gov/articles/buying-used-car-dealer)

## Sources

1. [Understanding Car Add-ons — Consumer Tips](https://www.ftc.gov/media/79917) — FTC. . Optional add-ons, price negotiation and written contract checks.

2. [Buying a Used Car From a Dealer](https://consumer.ftc.gov/articles/buying-used-car-dealer) — FTC. . Out-the-door price and financing comparison guidance.

## Disclosure

AI-assisted research, writing and translation by No Secrets, using the linked public documents. This is a source summary, not firsthand reporting or an independently audited investigation. No affiliate links are used in this article.

The source-check date is not the event date. Original documents control if a summary differs.