Best Car Alarm systems in 2021

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Keeping yourself and your car safe is crucial. Old alarm systems are dated and don’t offer the securities that new car alarm systems do. 

But, choosing the best car alarm system is difficult. There are countless models on the market, and it’s hard to determine which is worth the price. 

Your search is over. 

In this post, I’m going to review the 10 best car alarm systems in 2021.

Let’s get started. 

1. Viper 5906V Color Remote Security - Best Overall Car Alarm System


✅ Works with all smartphones

✅ Has failsafe starter kill

✅ Trunk pop feature

✅ Dome-light supervision

✅Encrypted code

✅ Easy access to different menu options

✅ Has silent alert mode

✅ Clear display screen

✅Most advanced alarm from Viper

✅ Comes with durable lithium-ion batteries


🚫 Needs professional skill

🚫 Large remote

🚫 Sensitive buttons


  • Two-way security and control start system
  • Keyless entry
  • Up to a one-mile range
  • Custom Animation on OLED Screen
  • Display Interior temperature
  • Two car operation
  • Shock sensor
  • Rechargeable battery via mini USB
  • GPS module

What I Like

Two-way system

This feature allows you to communicate with your car. It has a wide range and an OLED screen. Likewise, you can modify the alarm by using your smartphone.

You can also connect your smartphone to use it as a remote. This is useful in today’s age where we always have our phone’s in our hands but don’t always have our keys readily available. 



 Don’t worry about forgetting to lock your car and having to walk all the way back. This remote has a one-mile range. 

Also if you parked your car and can’t remember, set off your alarm from wherever you are and you are guaranteed to hear your car. 



You can easily track your car using a smart GPS module. Also, it has a built-in information center. This aspect allows you to check the condition of the vehicle. You can check the interior temperature, start the timer countdown, and other information.


Starter/kill system

This function prevents an intruder from ensuring the security of your car. It means the engine does not start without using the proper key in the ignition.


Customized shock sensor

You can easily detect if someone tries to break into your car. It comes with an additional shock sensor. You may even personalize to upgrade its sensitivity. With this, the shock wave can detect the slightest attempt to enter the car. Besides making a loud noise, the key can see if someone forced the door to open.


Dual Use

You can program this alarm to be used with two different cars. It will display specific information depending on which car you are using. Don’t hassle with carrying two different keys, this will keep your key chain light and make you more efficient. 

What I Dislike

Requires Viper skill

A viper-certified professional can only install the system. In this case, you can avail the offered warranty.


Large design

This unit is huge and bulky. It makes your keys difficult and awkward to carry.


Sensitive buttons

You may accidentally push the button in your pocket or bag. The controls are too easy to press.

Who Should Buy?

It works well for anyone who is looking for a reliable security device for the car. This unit will provide you complete peace of mind with excellent features.

It has a large range and innovative features that make it great for people with two cars or for those looking for a security system you can track from your phone. 

2. Python LC3 SST 2-Way Security with Remote System - Runner Up Best Car Alarm System


✅ Has a four-channel vehicle security system

✅ Security alerts pop up in real-time.

✅ Compatible with Viper Smartstart GPS car tracker

✅ Silent Mode alarming and disarming

✅ Legible owing to the HD Color quality

✅ Manual transmission mode

✅ Onboard remote start relays

✅ Tone, vibe, and display notifications and confirmations


🚫 Highly sensitive buttons

🚫 Requires extra modules


  • Stinger® DoubleGuard® Shock Sensor
  • Revenger® 6-tone Siren
  • Includes 1-Way companion remote
  • Up to a one-mile range
  • car finder “panic” button
  • Rechargeable battery
  • Priority Icon Map with LCD
  • 2-Way Paging
  • Dedicated Trunk Release
  • Keyless Entry
  • Fail-Safe starter kill

What I Like

Remote functions

It features a five-button remote. These buttons confirm commands with tones, vibration, text, and icons on display. It also allows you to know if your vehicle is running, locked, or having some issues. Besides, it can activate the defroster. With this, it gives you the internal temperature of your car or truck.


With LCD

The presence of an LCD makes it possible for you to know the current status of the vehicle. It is going to work great for your car. Moreover, to check the status of your vehicle, just check the LCD. It shows if you locked or unlocked the vehicle.


Adjustable program

The interface is easy to use.  It helps you program the system depending on your needs. Additionally, the Smart Start allows you to connect your mobile to the device so that you can start it from afar.



This device can automatically start your car if the temperature drops below a particular mark. On the other hand, it has an ignition kill switch capacity. It locks the car’s engine. Also, it does not shift out of the drive without your car keys. And in case your car gets stolen, you can get GPS tracking.


Panic button

It comes with a car finder panic button. This system lets you set the alarm to silent mode. Hence you can find your vehicle in a large parking lot.



You can have more powerful transmitters and additional functions. It is because the remote is rechargeable. Likewise, the transmitters maintain a consistent voltage during the discharge cycle. This activity will keep all parts working. Hence, it saves you spending money on replacing batteries.


Warning alarm function

It has a six-stage alarm system and warning alarm. These features ensure full protection at any time of the day. 


Quality shock sensor

The equipped modern alarm system prevents robbers from a break-in into your car. It utilizes warning chirps for minor disturbances. Also, it loudly alarms if it detects more serious impacts or disruptions.


What I Dislike

Sensitive buttons
You might press the buttons unintentionally when it is inside your pocket. This case will make you worry when it suddenly makes a noise.

Confusing instruction
The installation instructions are tricky. That is why it is better to let professional technicians install it. Besides, the warranty is void if an authorized dealer does not install it.

More modules (Windows module)
You must buy extra modules for more functions to work efficiently.

Who Should Buy?

It is suitable for professionals. It is quite hard to set up even with the instruction manual. 

It works well for those who want to protect their car from thieves. It features a rich security/keyless entry system. This function deters even the most determined or sophisticated thief.

3. CARLOCK Car Tracker & Alert System - Best Budget Car Alarm System


✅ Real-time tracking

✅ iOS and Android compatible

✅ Uses cellphone signal

✅ Available globally

✅ With a GPS device

✅ OBD plug-and-play system

✅ Monitors driving behaviors of anybody driving the car

✅ With Silent Mode2 siren less arming

✅ Dedicated app

✅ Alerts unusual vibrations and towing

✅ 24/7 monitoring function

✅ Checks engine and battery status


🚫 No starter kill feature

🚫 Limited diagnostic tool

🚫 With monthly service fee

🚫 Some reports of defective units and low quality

🚫 Poor customer service (concerns are via email only)


  • Two2-way car security with remote start system
  • Six-tone siren 
  • Foolproof starter
  • SuperCode technology
  • With four auxiliary channels
  • With a one-mile range
  • Rechargeable battery with USB port
  • Has operational valet mode switch and panic mode
  • Smart Start compatibility

What I Like

Excellent tracking system
It has an app that you can use to trace the driver of your car and its activities. The feedback tells hard acceleration, hard braking, and sharp cornering.

Moreover, it provides reliable information on how your drivers are performing on the road. The app also gives details about the car’s health.

This product includes a car lock, a small device that fits into your car’s on-board diagnostic port (OBD). It tracks your unit using GPS.

Likewise, it monitors and alerts you on your phone about unusual activities. For example, it tells if the engine starts, vibrates strangely, or device disconnection.

This add-on also provides a virtual mechanic that monitors your battery level. In this case, you can avoid battery problems caused by faulty car parts.


Trip tracking
It comes with a detailed travel tracking system. It lets you monitor the places your car went. Also, it gives an alert for possible theft using stolen or cloned keys. This also works when someone is moving your vehicle.

What I Dislike

Extra fee

You need to pay the subscription fee to maximize the device’s abilities and extra features.


Poor customer service

The staff are slow in responding to emails. Besides, there is no landline/cell number to call them either.


Lacks kill starter

It cannot prevent your engine from starting without using the proper key in the ignition. It is because it does not include a kill starter system.

Who Should Buy?

It’s suitable for young drivers who want to trace the car’s whereabouts in real-time. This brand is an excellent consideration. It monitors your vehicle’s security and the driving habits of those using your vehicle.

It is also the best option for those on a tight budget.  It is affordable, yet it provides a quite massive relief in your vehicle’s security system.

5. Avital 3100LX 3-Channel Keyless Entry Car Alarm


✅ Prevents false alarms

✅ Anti-theft Starter interruption

✅ Dual-zone impact sensors

✅ Includes two key fobs

✅ Long battery life

✅ Has different alarm modes

✅ Possible to pair with your car siren for louder response in case of intrusion

✅ Pre-cooling or warming up your car using the remote


🚫 One-way car alarm

🚫 No siren

🚫 Fragile display screen

🚫 Short-range

🚫 No guidance for users


  • Three-channel security/keyless entry system
  • Clone-Safe® Code-Hopping®
  • Parking Light Flash
  • Failsafe® Starter Kill
  • Built-in Stinger® DoubleGuard® Shock Sensor
  • Car finder button
  • Bright Red LED Status Indicator
  • Dome Light Supervision

What I Like

Visible warning signal

Anyone who attempts to break-in your car will back off because of its bright red LED light. It tells them that your vehicle has a security alarm.

Besides, it lasts for an extended period to keep your car safe and secure at all times.



The design is compact and light. Hence, you can bring and put the remote in your pocket. Likewise, it has a built-in micro USB port for convenient charging of the remote.


Easy to install

It has detailed and straightforward guidelines. Thus, you can install it in your car without breaking a sweat.

Also, it includes dome light supervision. This attribute turns on the light above the front seat when you disarm the vehicle.


Clone safe code hopping

This model has an extra layer of security called the “Clone Safe Code-Hopping.”  The codes are cycled periodically, so it is difficult to clone them.

It means anyone who cloned the security can only use it for a short time. Thus, it guarantees that you can only access the car using the remotes paired with the alarm.


Failsafe starter kill

Another layer of protection is its Failsafe starter kill. Even if the thieves enter your car, they won’t be able to start the engine.


Keyless entry

The three-channel keyless entry system allows you to disengage the lock. You can do this without inserting anything. 

It is also convenient when you are in a hurry.  Thus, you can open or lock your car even from a distance.


Remote’s convenient function

It allows you to pop the trunk if needed. You can also use it to prepare the temperature of your vehicle anywhere you are. So the car is ready before you get inside.


Loud sound

You can hook the alarm system to your siren for a louder sound. It is beneficial in case someone tries to break into your car.


Car finder button 

By having this button, you can quickly find your car in a wide parking area. Just hit the panic button, and the vehicle will flash the lights and beep the horns.


Impact sensor

The design comes with a dual-zone impact sensor. This sensor detects minor vibrations, full impacts, or blows to your car.

What I Dislike

No siren

This alarm does not include an additional siren, unlike other brands. The absence of a siren may let people ignore car alarms. It is because horns catch our attention more.


One-way transmission

The remote transmits a signal to the car alarm, but not vice versa. It means you do not get an alert signal via the remote when the notice is off.

So, every time you hear a car alarm, you have to check if it’s your car or someone else’s.

Who Should Buy?

It works best for car owners who don’t want false alarms to annoy their neighbors.  It has a smart car alarm with an anti-theft starter feature.

Also, it relies on dual-zone sensors to prevent false alarms that produce loud sounds.

It is an excellent choice for those on a small budget. This security alarm comes at a low price and can protect your car from getting stolen.

6. BANVIE Car Alarm System RFID Push Engine Start Button


✅ Suitable for almost all types of vehicles

✅ Uses an ignition switch

✅ Easy installation

✅ Easy replacement of ID cards

✅ Ideal for 12V cars

✅ Excellent quality for its price


🚫 Has no option to turn off the beep

🚫 RFID cannot be opened if the power is out


  • Has a push button
  • Comes with an acoustics and dashboard function
  • Equipped with an anti-theft function
  • RFID engine lock
  • Easy learning of codes
  • Has a service mode

What I Like

Ignition button

The alarm assimilates the ignition button. This allows you to start your vehicle through the alarm itself.


Ideal for 12V cars and those with alarm systems

This is compatible with all 12V and other vehicles that have car alarm systems.


Arming mode

The arming mode requires you (and your key) to be within 5 meters away from your car, 5m from the detection circle. Otherwise, the vehicle is secure, and it won’t start.


Master card

This master card resets the system code. This is helpful in case you lose your old card. You can input a new code, so the old card is no longer usable.


Service mode

If service mode is on, you can immediately push the start button without using your card. 

What I Dislike

Forgotten passwords

The system relies on passwords and codes. If you forget any of these, it’s going to make your life a little complicated. Maybe try using biometric scanning. This won’t require you to memorize anything.

Who Should Buy?

This product is perfect for beginners since it is effortless to install and use. It also comes with a code learning guide that can help you along the way.

Also perfect for those people who are on a budget. Despite its low price, it would be a huge improvement to the safety features of your vehicle.

7. EASYGUARD EC002 Smart Key RFID PKE Car Alarm System


✅ You can enter password in case of a lost key

✅ Durable and multi-functional

✅ Two remote key fobs

✅ Trunk release

✅ Remote engine start for pre-heating or pre-cooling

✅ Perfect for most DC12V vehicles

✅ Latest Frequency-Shift Keying (FSK) technology


🚫 A car alarm expert does installation

🚫 Not suitable for all car models

🚫 May need an extra bypass module


  • Push-button
  • Passive keyless entry (PKE)
  • Manually arm and disarm
  • Comes with a panic mode
  • Anti-hijacking technology
  • Touch password 
  • Provided with a programming method
  • Alarm can be mute or audible
  • Remote start and stop
  • Can reset password
  • Comes with a central door locking automation

What I Like

Keyless entry car alarm

This feature requires a password instead of a key fob. However, you would need a professional to install the system. 


Special code learning

Since this system requires a lot of codes, you have a special code learning guide. This helps you understand their purpose and what they mean.


Remote engine start

This feature allows you to pre-cool or pre-heat your engine even when you’re not yet inside. This is convenient, especially since temperatures outside are too extreme.

What I Dislike

Professional help is needed

This product requires some professional help during installation. Although it comes with a manual to guide you, it won’t guarantee your success in setting up the system. It’s better to be sure that every feature is working to avoid problems in the long run.

Who Should Buy?

This would be perfect for those looking for an alarm system with many safety features. 

It might be more ideal for people with more knowledge and experience installing similar systems. It’s difficult to set up. 

8. Prestige APS997Z Security System


✅ A two-way remote car alarm system

✅ One-mile range

✅ Has a timed-starting mode

✅ LED has seven functions

✅ Comes with a panic mode

✅ Long-lasting battery

✅ Has a two-way LCD transmitter with programmed notifications

✅ Automatic start mode

✅ Has a glass mount antenna

✅ Can have up to two separate control outputs


🚫 Does not come with a GPS

🚫 Would require a professional for installation


  • Automatic locking and unlocking
  • Has multiple vehicle control
  • Keyless entry 
  • Equipped with multiple siren tones
  • FlashLogic based system programming
  • Dual-stage shock sensor
  • Flashing parking lights
  • Telematics port – car link ready
  • Four auxiliary outputs

What I Like


This product has a remote-start, allowing the car to start without you needing to do it yourself. 


Climate control

You’ll get to experience the perfect temperature by the time you start your vehicle. This makes the ride more comfortable and enjoyable.


Automatically shuts off after long idle time

If left idle for too long, the engine would shut off on its own. This allows you to save gasoline and battery as well, which is a big plus.


Serves as a tracking device

This product can provide alerts to your phone wherever you may be. This is important, especially if something were to happen to your vehicle.

This also notifies you of the performance of your vehicle and if something needs fixing. 


Dual-stage shock sensor

Your alarm isn’t too sensitive. It won’t go off over minor taps, such as a bird landing on your roof or heavy rainfall. It would only trigger once a major force is being exerted on the vehicle.

What I Dislike

The LCD screen durability

The screen can break and sometimes even leak. You would need to get it repaired to use the screen again. 

Who Should Buy?

This is perfect for those on a budget but would want to ensure their vehicles’ safety. 


It has features that are enough to prevent intruders from getting into your car. It is also effortless to program, making it one of the best options out there.

9. Crimestopper SP-502 2-Way LCD Paging Combo Alarm, Keyless Entry, and Remote Start System


✅ Comes with GPS tracking

✅ Remote has multiple functions with an LCD screen

✅ Can sync two vehicles

✅ Priority unlock

✅ Real-time updates

✅ Comes with a USB cable and charger

✅ Can cover up to 3,000ft

✅ Vibration and audible tones


🚫 Battery of the remote and key fob is not that great

🚫 You would need to subscribe to the tracking feature yearly

🚫 Plastic on display is not that durable


  • Two-way LCD transmitter
  • Remote start
  • Manual arm and disarm
  • Keyless entry feature
  • Priority unlock feature
  • Trunk release
  • Three auxiliary outputs
  • Starter kill option
  • Dual-stage shock sensor 
  • Multi-function
  • Programmable engine codes

What I Like

Extra point of access

This feature is something that not every car alarm has. It allows you to access your alarm through your mobile phones. With a simple click, you can roll the windows, start your car, and many more. This adds to the convenience that the product provides.


Additional auxiliary outputs

This product has three auxiliary outputs that you can customize. You may add specific features such as opening the sunroof, closing windows, and others. After adding this, you may now control these actions through the device.


Alarm trigger

The alarm immediately alerts you if there’s an emergency through the remote. You don’t need to hold it the entire time you’re away since it will vibrate and the screen will turn red. This will get your attention so you can return to your vehicle at once.

What I Dislike

Need to be extra careful with the key fob

Having a key fob is very convenient, but you need to be extra careful with where you place it. There might be times when the remote would be sensitive, and a little tap might unlock the vehicle.

Who Should Buy?

It’s perfect for those looking for a top-performing car alarm that still falls within the budget.


Its two-way system will let you know immediately if something is happening to your vehicle. It also includes a siren that would go off in case of forced entry. 


With its features, your vehicle’s safety is something you won’t need to worry about that much anymore.

10. Omega K-9 1-Way Car Alarm with Keyless Entry Vehicle Security System


✅ Multi-tone electronic siren

✅ Trunk release

✅ Produces warning sounds for minor disturbances

✅ Easy valet


🚫 No LCD on remote


  • Keyless entry
  • Programmable features
  • Two auxiliary outputs
  • Two remote transmitters
  • Anti-carjack technology
  • Has two stages for disarming
  • Panic mode
  • Shock sensors
  • Flashing light outputs

What I Like

Anti-carjack technology

This would help you find your vehicle faster if ever it does get stolen. It will provide you with the details of when the incident took place. The alarm also has a siren that would go off upon forced entry.


Remote fob

The fob allows you to control your door locks from a few feet away. It also produces a frequency that only your transmitter can have. Your vehicle will restrict access to anyone who doesn’t have that frequency.

What I Dislike

Requires professional help

Like most car alarms, this would need a professional to assure you that the product would do its job. They might also have certain things or accessories that your car might need, although this would cost more.

Who Should Buy?

This would be perfect for those interested in quality rather than quantity—someone who is ready to pay for more to get the assurance that their vehicle would be safe. 


This product is one of the best options because it’s made of the latest technology. This guarantees a great amount of protection from anything and anyone.


Criminals see opportunity in the most seemingly safe places, so it’s always best to protect yourself. Hence, a safety buzzer is a much-needed device in every car. Besides, there are safety measures, so it guarantees maximum security.

However, before you buy your car alarm, make sure that everything fits based on your car’s model and style.

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