10 Best Car Alarm Systems of 2021

Jerry Wilson
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Car alarms have been around since the early 1900s and they’ve come a long way since then! Alarms have come a long way from little metal boxes in our cars and we’re now spoiled for choice.

There’s everything from extremely affordable alarms that are perfect for a first car, through to some high-end 100% wireless systems. There’s also a wide variety of car alarms on the market today and it can be difficult to make a judgement call on what’s best for you.

So, to help you make the right decision, I’ve put together a list of the best car alarm systems of 2021.

NameCategoryProduct
Compustar CS7900-AS All-in-One 2-Way Remote Start and Alarm BundleBest OverallCompustar CS7900-AS All-in-One 2-Way Remote Start and Alarm Bundle
CARLOCK – 2nd Gen Advanced Real Time 3G Car Tracker & Alert System. ComesBudget PickCARLOCK - 2nd Gen Advanced Real Time 3G Car Tracker & Alert System. Comes
Prestige APS997Z Two-Way LCD Command Confirming Remote Start/Keyless Entry and Security SystemUpgrade PickPrestige APS997Z Two-Way LCD Command Confirming Remote Start/Keyless Entry and Security System

1. Compustar CS7900-AS All-in-One 2-Way Remote Start and Alarm Bundle

Our rating: 9 / 10

Compustar CS7900-AS All-in-One 2-Way Remote Start and Alarm Bundle

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Pros:

  • Comes with two HD WiFi Cameras
  • Can remotely start your car as soon as you leave your driveway
  • Can be set to open or close your garage door
  • Autogood product reviews on Amazon

Cons:

  • A bit pricier than others on this list
  • May not work with all cars

Consists of a powerful hub and a 2-way remote for your car. The CS7900-AS comes with two HD WiFi Camera options: a 55-degree wide angle camera or an 85-degree wide angle camera. You can get alerts on your phone or tablet whenever there’s movement outside your home, and you can watch the video on the camera.

The CS7900 has two-way voice communication, which means you can talk to your kid when they’re in the driveway. You can also remotely start your car as soon as you drive more than 50 feet from your driveway. Set the alarm to open or close a garage door. And if you’re a member of the Compustar Stolen Vehicle Recovery Program, you can get in-car location updates on a stolen car.

2. Viper 4105V 1-Way Remote Start System

Our rating: 8 / 10

Viper 4105V 1-Way Remote Start System

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Pros:

  • Affordable and reliable
  • Easy-to-install
  • Weatherproof and theft-proof

The Viper 4105V is a great entry-level car alarm system. Although it has fewer options and isn’t as advanced as some of Viper’s other alarm systems – this particular Viper 4105v model comes at a much lower cost.

The Viper 4105V is fully remote-start enabled and works with Viper’s 4150V remote start system. This Viper 4105V model is actually the 1-way version of Viper’s 4105V, which also has a 2-way remote, which allows for greater flexibility.

This Viper car alarm system can be installed in just minutes. It’s very user-friendly, and easy to understand for anyone with a bit of handyman experience.

3. EASYGUARD EC002 Smart Key RFID PKE Car Alarm System Passive Keyless Entry Remote Engine Start Starter Push Start Button & Touch Password Entry Hopping Code

Our rating: 7 / 10

EASYGUARD EC002 Smart Key RFID PKE Car Alarm System Passive Keyless Entry Remote Engine Start Starter Push Start Button & Touch Password Entry Hopping Code

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Pros:

  • Wireless alarm with built-in shock and impact sensor
  • Easy installation
  • Optional remote start
  • Starter button for quick engine start
  • Touch keyless entry

Cons:

  • Requires batteries
  • I.D. tags have to be attached to each set of keys

If you want ultimate control over your car, then the EasyGuard EC002 is a great choice. This sleek, stainless steel car alarm comes with a passive keyless entry that allows users to lock and unlock it by simply pushing a button on the remote. There’s also an optional remote starter that will enable you to turn on engine and start the vehicle through the remote. You can also touch to unlock the console and even key in the entry code through its keypad. The car keeps your vehicle safe with its built-in shock and impact sensor.

The car alarm is also easy to set up. It can be connected to a car’s battery or directly to a car’s power supply to give instant protection.

The only downside is its battery requirement. Duracell Duralock batteries do come with the package for the remote starter but are not included for the sensors.

4. Prestige APS997Z Two-Way LCD Command Confirming Remote Start/Keyless Entry and Security System

Our rating: 7 / 10

Prestige APS997Z Two-Way LCD Command Confirming Remote Start/Keyless Entry and Security System

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Pros:

  • Affordable package
  • Nice keychain remote
  • Have ability to add remote start
  • Gsm for remote start
  • Great range

Cons:

  • Several issues with gsm
  • Software can be difficult at times

This car alarm package is great for those wanting to have the utmost in car security. It comes with a huge price tag. However, it's well worth the price. If you compare the price of each unit in this package individually you'll be looking at paying closer to six hundred dollars than the three hundred the whole package costs.

The package includes a complete car alarm/anti theft security system. You get a two-way remote, two door open/close sensors, an ignition shock sensor, a starter motor wire, a trunk lip mount remote LED, a LED car alarm strobe light, starter horn wire, a trunk sensor wire, an override button wire, and of course the car alarm main unit.

5. CARLOCK – 2nd Gen Advanced Real Time 3G Car Tracker & Alert System. Comes

Our rating: 7 / 10

CARLOCK - 2nd Gen Advanced Real Time 3G Car Tracker & Alert System. Comes

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Pros:

  • Unique Bluetooth functions
  • Locate your car with relative ease
  • Two-way anti-theft system
  • Two-way vehicle tracking
  • Two-way remote functions
  • Time-date stamp on all photos and videos
  • Easy to install
  • Free real time tracking
  • 100% moneyback guarantee

Cons:

  • Only monitors vehicles while in motion
  • Systems can become outdated
  • It may miss the carjacker if the car is towed
  • Requires a monthly subscription

Quickly & Easily Install It in Minutes! No Cables! Just Plug into a 12V Car Outlet.World’s 1st Anti-Crash System with 3 Levels of Chassis Alarm, Alarm Startle, Alarm Locate & Alarm Siren.Also Includes Emergency Call, Text Message, Email, Calendar Alerts & Remote Starter.Has Voice & LED Indicator.Car Alarm/Siren Arm/Disarm, Emergency Dial & Random Locate Functions.Uses Mifare Exclusive RFID® Card & Remote Control. Offers FREE Lifetime Business Hotline & FREE 65ft Distance Remote Start.Equipped with Device & Phone App.Has Real Time Tracking.

The CARLOCK brand of 3G car tracking devices is a perfect match for those looking for a reliable way to keep tabs on their car.

6. Python 5706P Responder LC3 SST 2-Way Security

Our rating: 6 / 10

Python 5706P Responder LC3 SST 2-Way Security

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Pros:

  • Excellent response time
  • Easy to learn how to use
  • Good for large trucks and SUVs

Cons:

  • No GPS navigation
  • No remote engine start or panic

Whether you’re protecting a large truck or a small sedan, the Python 5706P Responder LC3 SST 2-Way Security with Remote Start System is our compact security system pick for 2020. The Python 5706P Responder LC3 SST offers a reasonable price for an easy-to-use system that offers plenty of features to protect your vehicle.

The Python 5706P Responder LC3 SST is an excellent choice for larger vehicles because it comes with a shock sensor for the entry/exit door zone, a tilt sensor for a hood/trunk zone, and a shock sensor for the interior motion sensor. All of the sensors in the Python 5706P Responder LC3 SST have a wide range and the backups are as reliable as the others. If one sensor goes bad, the system will still trigger on the others.

In addition, the Python 5706P Responder LC3 SST offers plenty of other backup sensors. There’s a backup motion sensor, a backup PIR sensor, a backup glassbreak sensor, and a backup shock sensor. The installer can also choose to add a backup remote keyless entry transmitter to this system.

7. AVITAL 5303L Security/Remote Start System

Our rating: 6 / 10

AVITAL 5303L Security/Remote Start System

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Pros:

  • Remote control alarm system
  • Quick and easy installation
  • Plenty of extra equipment available
  • Affordable and reliable

Cons:

  • Corded keyfobs
  • No built-in security camera
  • No pan and tilt option for cameras

The AVITAL 5303L offers plenty of features at a price that won’t break the bank. It’s easy to set up and comes with well implemented and intuitive touch screen controls.

This system has plenty of bells and whistles to it, such as 720p HD monitoring cameras (perfect for quick viewing of your vehicle or home…or anything else), customizable motion zones, and more that allow you to pinpoint trouble spots.

You can even get a companion app for your smart device from the AVITAL store so you can check in from anywhere, even when you’re not at home or the office. However, you should note that none of these security features can replace a professional home or vehicle security system. It’s best to keep this system as a back up and use it as a deterrent.

8. Viper 350 PLUS 3105V 1-Way Car Alarm Keyless Entry,BLACK

Our rating: 6 / 10

Viper 350 PLUS 3105V 1-Way Car Alarm Keyless Entry,BLACK

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Pros:

  • Feature-rich package with a good number of gadgets
  • Easily programmable

The Viper 350 Plus is the best keyless alarm system you can find for your vehicle. It comes with an array of features including a siren alarm, remote starter, shock sensor, keyless entry, motion sensor, remote panic alarm, wireless remote, and GPS tracking.

Furthermore, this kit comes with an easy-to-use LCD controller and an installation kit that includes everything you need to install the Viper 350 Plus.

The kit includes a window and seatbelt shock sensor, full glass breakage sensor, as well as a wireless control that can be easily attached to your keychain. In order to keep tabs on your car any time, anywhere, the Viper 350 Plus comes with built-in global GPS tracking technology.

9. Pyle Car Alarm Security System

Our rating: 6 / 10

Pyle Car Alarm Security System

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Pros:

  • Quality components
  • Installation was easy
  • Includes a remote with four buttons on it
  • It can be set to different tones
  • We liked the indicator light on the car horn
  • The car alarm is wireless
  • There's an ignition lock and a remote door lock
  • There's also an auxiliary output

Cons:

  • The USB cable doesn't stay plugged in all the time
  • It does not come with anti-theft partitions, but this is a common feature in systems of this price range

The Pyle Car Alarm Security System has several features, which are not available on car alarms of the price range. One of our favorite features is the auxiliary output. It offers an easy way to arm and disarm the security system via any auxiliary port, so you can use it to arm your safety system before opening the car door.

While the system isn't installed with anti-theft partitions, they can be added separately using an anti-theft module. We also liked the indicator light located on the horn of the car. The remote that comes with the system fits perfectly in your hand, and you'll never lose it at the bottom of your purse.

10. Crimestopper SP-302 SecurityPlus 2-Way Deluxe Alarm/Keyless Entry System

Our rating: 4 / 10

Crimestopper SP-302 SecurityPlus 2-Way Deluxe Alarm/Keyless Entry System

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Pros:

  • Security plus 2-way alarm that has air horn, siren, LED, and 120 db alarm with rechargeable backup batteries
  • Keyless entry system

Cons:

  • Complicated installation process
  • Can only be used for cars

(Upgraded & Improved)

The Crimestopper SP-302 SecurityPlus 2-Way Deluxe Alarm/Keyless Entry System is an upgraded 2-way alarm that can be used as a backup or primary security measure for any car. With its air horn, siren, LED, and a loud 120 db alarm, you can let intruders know that they are being watched.

With its transmitter and backup battery, you can use this alarm to prevent car theft by not having to carry around your keys.

Frequently Asked Questions (FAQ)

What are the best car alarm systems?

Car alarms help protect your vehicle and property. They’re a useful deterrent against car theft. The best systems are easy to install, work well, and are reasonably priced. Unfortunately, the market is full of mediocre alarms that might make some noise, but aren’t really effective and end up becoming more of a nuisance than a useful security device.

What is the best Viper car alarm system?

In our opinion the best Viper alarm is the V3i which has a few unique characteristics that make it standout from the rest of the line. They include features such as the LCD screen, the user-friendly keypad, and its ability to take up to five different shock sensors and two different door triggers. We also like that it offers different modes which allow the user to have a choice in how they want the alarm to respond. This gives you the option of low-voltage protection mode, which activates a siren when the battery voltage is low and the parking mode of operation when a potential car thief triggers the system.

We recommend the V3i alarm system because it has more functions than the regular Viper alarms and it is truly more versatile. It allows you programming choices and the ability to have the alarm react to multiple vehicles.

Do car alarms really work?

Car alarms exist for one main purpose: deterrent. First and foremost, they are an audible crime deterrent that works as a loud deterrent. If someone hears a car alarm while attempting to break into a car, they may choose to target a car without an alarm. Secondly, most car alarms come with a security system that includes either a shock sensor or a motion sensor. Along with the audible deterrent, these sensors also work as a visual deterrent by notifying the potential car thief that a car alarm is present. If a potential thief sees an alarm system, they may choose to go ahead and break into a car with a car alarm system.

What is an active alarm on a car?

An active alarm on a car provides protection against theft. You can either have sensors installed on your vehicle or simply arm a system to warn away potential thieves. The choice of the type of alarm depends on your budget and preferences.

The most prominent car security systems in the US include OnStar, LoJack, and Viper. The systems offer GPS tracking, accident notification, remote start and stop, and vehicle diagnostics amongst other things.

A lot of alarm systems on the market have a starter interrupter. This feature disables the main switch of your engine so that the engine cannot start. Your car will remain operational until the battery runs out or the warranty on your control unit completely expires.

Conclusion

With the 10 of the best car alarm systems reviews of 2021, we hope we have provided you with enough of a guide to choose the right alarm system for you. Remember, when looking at the options available to you, it’s helpful to take a bit of time and review the amazing benefits that the top rated products can offer to you. Hopefully we have inspired you to keep things simple with the best car alarm system for you … a few of these could be exactly what you are looking for.

Our Recommendation

NameCategoryProduct
Compustar CS7900-AS All-in-One 2-Way Remote Start and Alarm BundleBest OverallCompustar CS7900-AS All-in-One 2-Way Remote Start and Alarm Bundle
CARLOCK – 2nd Gen Advanced Real Time 3G Car Tracker & Alert System. ComesBudget PickCARLOCK - 2nd Gen Advanced Real Time 3G Car Tracker & Alert System. Comes
Prestige APS997Z Two-Way LCD Command Confirming Remote Start/Keyless Entry and Security SystemUpgrade PickPrestige APS997Z Two-Way LCD Command Confirming Remote Start/Keyless Entry and Security System