Visiting a dealer’s Finance and Insurance office is usually the last excruciating step when buying a car. The F&I rep will go through an endless stack of documents to finalize the sale while attempting to sell as many pointless add-ons as possible.

Many of us know to avoid add-ons like pin striping, paint protection, and extended warranties since they are either overpriced or valueless — but we may be letting the worst offender of all slip by.

Car alarms seem like sensible choices, especially if they’re offered at a good price, but the alarm that many buy in the F&I office can barely be considered more than a dealer profit device. These alarms are often presented as add-ons to the factory alarm that are supposed to improve on the factory security system, but in reality are usually nothing more than a shock sensor and some hacked wires.

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