Custom Car Magnets: The Complete Guide for Businesses and Campaigns

If you drive a vehicle for work, your car is a moving billboard that costs nothing in ad spend every single day. A pair of custom car magnets turns your truck, van, or car into a professional advertisement that works while you drive to job sites, run errands, park at the grocery store, and sit in traffic. Unlike a full vehicle wrap, magnets can be added and removed in seconds.

Why Car Magnets Work for Small Businesses

Car magnets are one of the highest-ROI marketing tools a small business can buy. You pay once, and the magnet advertises your business for years. No monthly spend, no click costs, no algorithm to fight. They're especially effective for service businesses that drive to job sites: lawn care, pressure washing, HVAC, plumbing, cleaning, catering, pet grooming, real estate, and contractors of all types.

What Should Go on Your Car Magnet?

Focus on three things: your business name, what you do, and how to contact you. A phone number or website URL is essential. A brief descriptor of your service helps people instantly understand what you offer. Your logo should be present but don't let it dominate at the expense of readability. The phone number should be nearly as large as the business name.

Design Tips for Readable Magnets

Use high-contrast colors with dark text on a light background. Keep text large — two or three big, readable lines beat six tiny lines nobody can read. Make your phone number large enough to read from 15–20 feet away. This is the single most important element for generating calls.

Sizes That Work Best

The most common sizes are 12" x 18" and 12" x 24" for car doors. For trucks and vans, you can go bigger. The magnet needs to sit flat on a smooth metal surface, so measure the flat area of your door before ordering. Important: car magnets don't work on aluminum body panels, fiberglass, or plastic. Test with a kitchen magnet first if you're not sure.

How to Care for Your Car Magnets

Remove your magnets at least once a week and wipe down both the magnet and the vehicle surface to prevent moisture trapping. Store them flat, never rolled or folded. Our magnets are printed with scratch-resistant laminate and waterproof inks, so they hold up in rain, car washes, and sun. With basic care, a quality car magnet lasts 2–5 years.

Order custom car magnets — Waterproof, scratch-resistant, ships in 1–2 business days. Also browse our full magnets collection for all sizes and styles.