How to Prevent Car Theft

Car theft isn’t rare—even if it hasn’t happened to you personally. Rates have climbed in recent years, driven by a combination of organized theft rings, viral social media trends—like the Kia Boys—exploiting specific vehicle vulnerabilities, and the simple reality that many people don’t do much to prevent it. Unlocked doors, keys left inside, and cars left running unattended account for a significant share of annual vehicle thefts.​

The good news is that most car theft is opportunistic. Thieves are looking for easy targets—and a vehicle with even basic deterrents in place is usually enough to shift their attention to something easier. You don't need an expensive security system to meaningfully reduce your risk. You need the right habits, the right devices for your situation, and an understanding of how modern theft actually works.​

This guide covers it all—from protecting a keyless-entry vehicle against relay attacks to the everyday habits that make your car a harder target wherever it's parked.

According to the NICB, a vehicle is stolen in the United States roughly every 48 seconds. While a decline from past years, several hundreds of thousands of vehicles are still being stolen annually, making vigilance and prevention efforts crucial. ​

Within the past few years, Hyundai and Kia models became high-profile targets after a vulnerability in their ignition systems—affecting vehicles without an engine immobilizer—was widely publicized on social media, leading to a dramatic spike in thefts of those models in cities across the country. However, both manufacturers have since issued software updates and steering wheel lock programs to address the issue, which has resulted in a solid decline in targeting for the third consecutive year. ​

The catalyst of most thefts is opportunity. A vehicle left unlocked, running, or parked in a poorly lit, unmonitored area is substantially more likely to be targeted than one with visible deterrents and basic security measures in place.

Ironically, home is where most vehicles are stolen, as that’s the place you should feel safest. A car sitting in a driveway overnight—especially one with a predictable routine—is a magnet for thieves. However, a few straightforward measures can significantly reduce the risk of theft.​

The most effective thing you can do is park in a garage. A vehicle that isn't visible from the street isn't being evaluated as a target. If a garage isn't available, park in the most well-lit, visible part of your driveway or as close to a streetlight as possible.​

Never leave your vehicle running and unattended—not to warm it up on a cold morning, not for a quick errand, not for any reason. Warm-up theft, sometimes called "puffing," is common in colder climates and takes seconds. Similarly, never leave a spare key in or near the vehicle. Magnetic key boxes and visor-clip holders are well known to thieves.​

A driveway alarm or an exterior security camera with motion detection adds another layer—both as a deterrent and to capture footage if something does happen. A visible steering wheel lock or brake pedal lock is inexpensive, takes only seconds to install, and clearly signals that this vehicle will take more effort than the one next door.

Keyless entry and push-button start systems have introduced a theft method that most owners don't know exists until it happens to them. Relay attacks work by using a pair of signal amplifiers—one device held near your home to capture your key fob's signal, another held near your vehicle—to trick your car into thinking the key is physically present. The car unlocks and starts normally. The whole process takes less than a minute and leaves no sign of forced entry.​

The primary defense is simple and inexpensive—a Faraday pouch. These signal-blocking pouches prevent your key fob from broadcasting when stored inside. Keep your key fobs in the pouch whenever they're not in use, particularly overnight. Avoid storing them near front doors or exterior walls, where signals are easiest to intercept from outside.​

Some manufacturers offer the option to disable keyless entry entirely through the vehicle's settings or via a dealer update—worth checking your owner's manual or contacting your dealership if you're in a higher-risk area. It's also worth noting that relay attacks get the vehicle started and moving, but a visible physical deterrent like a steering wheel lock still forces the thief to deal with an immobilized steering column—enough to send most of them elsewhere.

Break-ins are a separate problem from outright theft, but they're far more common. A smashed window and a stolen bag or laptop are less catastrophic than losing the vehicle entirely, but it's costly, disruptive, and largely avoidable.​

The single most effective thing you can do is remove everything visible from your vehicle every time you park. Not just laptops and bags—charging cables, loose change, a gym bag, sunglasses, a reusable grocery tote. Any of these can prompt a break-in. If a thief can see a charging cable on the seat, they'll assume a device is hidden nearby. The standard is a completely clear interior, every time.​

"Out of sight" applies to the trunk and center console, too. Putting a bag in the trunk while you're still in a parking lot accomplishes nothing if someone watched you do it. Move valuables to the trunk before you reach your destination, or leave them at home.​

Beyond clearing the interior, park in busy, well-monitored areas when possible. Tinted windows and sun shades reduce visibility into the vehicle—learn more in our guide to the top sunshades. A visible alarm indicator light, a steering wheel lock, or a dash cam with a recording indicator are all low-cost deterrents that signal this vehicle will take more effort and leave more evidence than an easier target nearby.

No single device eliminates theft risk entirely, but the right combination—matched to how and where you park—is an effective deterrent. Here's a quick overview of the main categories:

Here’s a deeper dive into each device: 

Steering wheel locks are among the oldest and most effective anti-theft tools against opportunistic theft. They're visible, they're physical, and they signal to a potential thief that this vehicle will take longer. Cost is low—typically $30–$60—and no installation is required.

GPS trackers don't prevent theft but dramatically improve the odds of recovery. Many law enforcement agencies can act on a live GPS signal and recover a vehicle within hours of a report. Some insurance providers offer premium discounts for vehicles with active tracking devices.

OBD port locks address a growing method of theft on newer vehicles—plugging a programmer into the OBD-II diagnostic port under the dashboard to reprogram a blank key fob. An OBD port lock physically blocks access to the port and is a worthwhile addition for owners of newer trucks and SUVs.

Faraday pouches are essential for any vehicle with keyless entry. They block the signal your key fob broadcasts continuously and cost less than $20. If you have a push-button-start vehicle and you're not already using one, this is the easiest upgrade on the list.

Dash cams with parking mode record activity around the vehicle when it's parked and the engine is off. The presence of a visible camera is often enough to deter a break-in. Footage can support insurance claims and assist law enforcement if an incident does occur.

Aftermarket immobilizers prevent the engine from starting without an additional hidden input—a switch, a code, or a secondary key. They're more involved to install but represent one of the most effective hardwired solutions available, particularly for vehicles that don't come with a factory immobilizer.

Devices help, but habits are the foundation. Most stolen vehicles and break-ins involve at least one lapse in basic security practice. These are the ones worth building into your routine:​

• Lock your vehicle every time—including in your own driveway

• Never leave the car running and unattended, for any length of time

• Take your keys with you on every exit, without exception

• Don't store your registration or insurance documents in the glove box—they simplify identity theft and fraud if the vehicle is stolen. Keep digital copies on your phone instead

• Vary your parking routine if you follow a predictable schedule in a consistent location

• Report suspicious activity near your vehicle or in your neighborhood—most relay attack and theft ring operations involve repeated reconnaissance before a theft occurs

None of these require a purchase or an installation. They require consistency, and most opportunistic thieves are counting on you not having it.

If your car is stolen, it’s important to act fast. As a first step, contact local law enforcement and file a police report—this will have officers actively keeping an eye out for your vehicle. Then, file an insurance claim with the police report number. If your vehicle has a GPS tracker or you have relevant footage from your own or a neighbor’s security camera, share this information with law enforcement to improve your chances of recovery.​

Other Types of Vehicle Thefts

Aside from break-ins and car theft, other types of vehicle and accessory theft exist. One of the most common is catalytic converter theft,

Q: What is The Most Stolen Car in America?

A: According to the NICB, “In 2025 the 5 most stolen vehicles were Hyundai Elantra (21,732), Honda Accord (17,797), Hyundai Sonata (17,687), Chevrolet Silverado 1500 (16,764), Honda Civic (12,725).” The Silverado 1500 is the most-stolen truck, with examples often targeted for resale or part-outs. ​

Q: Does Car Insurance Cover Theft?

A: Comprehensive coverage typically covers vehicle theft and damage from break-ins—Liability policies do not. Check your policy and keep a record of any aftermarket accessories or equipment that you’d need to claim separately.​

Q: How Do Relay Attacks Work on Keyless Cars?

A: Relay attacks use two devices to amplify and relay your key fob's signal—one near your home, one near your vehicle—tricking the car into thinking the key is physically present. The car unlocks and starts as normal. Storing key fobs in a Faraday pouch when not in use blocks the signal and prevents the attack.​

Q: What is the Most Effective Anti-Theft Device for a Car?

A: There's no single best answer—effectiveness depends on the type of theft you're protecting against. For opportunistic theft, a visible steering wheel lock is hard to beat for the cost. For keyless vehicles, a Faraday pouch addresses the most common modern attack method. For overall deterrence, a combination of a visible physical deterrent, a GPS tracker, and consistent habits outperforms any single device.