Loudest Car Horn

Top 10 Loudest Car Horns in 2020

In this review we feature the loudest car horns that you can install in your car or truck that are guaranteed to improve your vehicle’s horn volume output. These car horns are designed to deliver exceptionally loud sound between 115 to 150 dB, and come with dual tone frequency ranges (high + low frequencies) to ensure that other drivers and pedestrians can hear your vehicle coming from any direction. These car horns are made using durable materials and also feature water-resistance to ensure that they have a longer service life. If you are looking to upgrade your existing vehicle horn system to a much louder vehicle horn, be sure to check out our top picks below!

#1 HS Heavy Duty Mega Blast Horn

HS Heavy Duty Mega Blast Horn

The HS Heavy Duty Mega Blast horn is one of the loudest car horn we have ever tested that delivers an incredibly loud sound. These are compressor car horns that do not require an air tank, but yet produce incredibly loud sounds with two built-in compressors. They are great for cars and vehicles that require a louder car horn to alert other cars on the road or pedestrians – it produces such a powerful volume blast that is hard to miss. These loud horns also come with hardware and relay installation kits included, and installing them in your car or truck is a breeze. The car horns also feature dual metal chrome plating with heavy duty compressors.

In terms of loudness, we would place these horns somewhere in between a truck and a train – the horns are very big and have great sound output. The horn trumpets ae loud and clean sounding, and can really alert other vehicles coming into your lane while on the highway. These car horns are made in Italy with quality components, and no oil maintenance is required.

The Verdict? If you are a frequent driver and need really loud car horns for your car or truck vehicle, we highly recommend the HS Heavy Duty Mega Blast Horn. Not only do these trumpet horns sound very loud, it also comes with all the hardware and relay included for easy installation – they are easily mountable inside your car and connect to your car horn output from your steering wheel. They certainly sound much louder than your original car loaded horn, and can alert other vehicles or pedestrians while driving on the highway.

#2 The PIAA 85115 Bass Horn

The PIAA 85115 Bass Horn

The PIAA 85115 Bass Horn is one of the loudest car horns available with an attention grabbing deep tone. The car horn can reach a maximum volume output of 112 decibels, with a twin tone between 330 Hz and 400 Hz. This car horn is made for easy installation and there is no need for relays or rewiring. These car horns are among the loudest we have ever tested – they not only outperform in terms of output, but also have three different tones to choose from to suit your specific needs. It’s the ideal horn to have if you need to easily alert distracted drivers or pedestrians crossing the street that do not see your vehicle.

The PIAA 85115 Bass Horns provides up to 115 decibels at 2.7 amps each, and come with a slim design for tight fitting applications. The horns are very easy to install without the need for any delays or rewiring with easy instructions to follow. The horns only have one wiring going to each, and only need to be wired to stock power connectors to fit the new horns. If the stock connectors work normally, there is no need to manually change the connectors for your car horn. We would recommend checking if your stock connectors fit the PIAA Bass horns to ensure a smooth installation process.

The Verdict? If you are looking for one of the loudest car horns that are guaranteed to grab the attention of other vehicles or pedestrians, go for the PIAA 85115 car horns. These car horns are easy to install without the need for relays or rewiring, and you can simply connect them to your existing car stock connectors if they are compatible. These horns can produce a max volume of 112 decibels with a twin tone of 330 Hz and 400 Hz, and is made from quality materials that are rust-proof and durable.

#3 HELLA Supertone 12V Twin Horns

HELLA Supertone 12V Twin Horns

The HELLA Supertone 12 Twin Horns are some of the loudest car horns with a sound pressure level of 118 Db. These are loud and powerful Supertone horns which are guaranteed to grab the attention you need in every situation while driving on the road. The horns are very well designed with a black coated metal body with a red protective grill for a distinctive and stylish look; the horns also feature a performance orientated driver for a high level of safety combined with a great design and high quality finish. Furthermore, the Supertone horns come with a M8 screw horn bracket and flat connections (6.3mm, open blade type) for easy installation in your car.

When we first tested the HELLA Supertone car horns, we were very impressed by how loud these car horns can go. They have a sound pressure level of 118 dB and a 12V voltage, with a frequency range of 500 Hz to 300 Hz (high tone to low tone range). These car horns are easy to install, and comes with one high tone supertone horn, one low-tone supertone horn, 1 12V relay, 2 mounting brackets and mounting instructions. This installation kit allows flexible mounting options and easy installation. We also liked the fact that the manufacturers provided a Teflon pill to protect the car horn against humidity with a durable housing that protects against corrosion.

The Verdict? The HELLA Supertone 12V twin horns are some of the loudest car horns we have tested that are ideal for passenger cars, trucks and motorbikes. They are incredibly loud and can reach a maximum volume of 118 dB @ 2m. We also liked the flexible mounting options and both vertical and horizontal installations are possible. These horns sound extremely loud, and sounds like multiple car horns being played simultaneously – these are car horns that will definitely alert other drivers on the road or pedestrians.

#4 WOLO Bad Boy Car Horn

WOLO Bad Boy Car Horn

The WOLO Bad Boy is one of the loudest car horns available today that features a patented one-piece design that requires no hoses or additional wiring. The car horn installs easily in minutes by simply transferring the factory horn wires to the compressor, and you’re basically done. The car horn has a stylish black finish and mounts with one bolt included inside the installation kit. This car horn can produce a powerful dual tone air sound that is approximately 2 times (2X) louder than a factory car horn. The diaphragms have a flat shaped chrome cover and WOLO has added a chrome cover to the top of the compressor for durability – both covers are aerodynamically shaped, making the Bad Boy a great choice for any engine compartment. To top it off, this car horn comes with a built-in maintenance free compressor that will provide years of service without any issues.

The volume on the WOLO Bad Boy is much louder than we expected considering the compact size of this car horn. This horn is effectively designed to produce a powerful dual tone sound that sounds extremely loud when heard from your vehicle. You can sound this car horn in the highway and you will almost definitely grab the attention of any car that is coming into your lane. Furthermore, the Bad Boy horn is compact in size and ideal for any 12V vehicle. The installation kit also comes with a heavy-duty 30-amp relay with a mounting bolt and instructions.

The Verdict? If you are looking for one of the loudest car horn that is simple and easy to install, go for the WOLO Bad Boy Car Horn. This car horn features a patented one-piece design that requires no hoses or additional wiring, and can simply connect to your factory horn wires for easy setup. It also comes with an installation kit with mounting bolts and amp relay if required. This car horn sounds very loud and can produce a tonne of volume from your car to alert surround cars of pedestrians in any situation.

#5 FARBIN Compact Air Horn

FARBIN Compact Air Horn

The FARBIN Compact Air Horn is possibly the loudest car horn in the world that can produce 150 dB of strong sound. It comes with a super loud nautilus wiring harness for any 12V vehicle and is relatively easy to install. This air horn is made from high quality materials which ensures durability and can work in various temperature environments. It also comes with matched filters that filters the air and prolongs the service life of the horn. We liked the fact that the FARBIN horns are easy to install – you can install it manually with the harness package which is included with this car horn. They are suitable for any 12V vehicle type, including trucks, lorries and SUVs. This air horn comes with an integrated air pump, so there is no need to have any air source on the car.

The sound coming from the FARBIN car horn is exceptionally loud, and can be used to supplement your vehicle’s existing horn system. We tested out this horn on our Nissan SUV and really liked the fact that it could go up to 140 dB to 150 dB, which is incredibly loud. It’s loud enough to even wake your neighbors living a few blocks away when you sound this horn. One key advantage that this horn has is its 2 air vents that are facing the ground, which prevents water and rain from seeping inside. As mentioned above, the car horn includes an integrated air pump so there is no need to connect this horn to any air source on the car.

The Verdict? The FARBIN Compact Air Horn is definitely one of the loudest car horns we have tested that can produce an incredible 145 dB of power output. Its suitable for any 12V vehicle type horn, and can be installed on trucks, lorries, cars and vans. It has a fully integrated design and built-in air horn, and is also made from high quality material components which add to the overall durability. We really liked the fact that this car horn comes with all the required accessories for you to install the car horn without any additional equipment.

#6 SoundOriginal 12V Loud Car Air Horn

SoundOriginal 12V Loud Car Air Horn

The SoundOriginal 12V Loud car horn is one of the loudest car horns available with an exceptionally loud output of 150dB. It is essentially a dual-tone car horn that’s easy to install on trucks, vans and cars with an included automotive relay. The high tone horn produces a frequency of 510 Hz and the low-tone car horn has a frequency of 410 Hz, with both horns working in tandem to ensure that other drivers will definitely hear the car horn on the road. It uses a standard 12V power source and can easily connect to your car horn stock wiring. The SoundOriginal horn features a compact one-piece design with maximum rust protection and a maintenance free compressor. The car horn is small in size (4 ¾” x 3” x 4 ½” tall) with a water resistant compressor. This car horn is very loud and will work with any 12V car system.

We were surprised at how easy it was to install this car horn. If you use the relay wires that are included in the package, the red wiring goes into the factory horn plug and the black is a ground wire that you need to install in the appropriate place. You’ll also need to ensure your horn fuse amp is working and up to date. Other than that, you do not need an additional relay or change to the existing car horn fuse. In terms of loudness, we would say that the SoundOriginal car horn is one of the loudest we have ever heard, with a full 150dB of power output. This means that other drivers will almost definitely hear you when you horn your car, providing a safer driving experience.

The Verdict? If you are looking for one of the loudest car horns with an easy install, go for the SoundOriginal 12V loud car horn. This is essentially a two tone car horn that uses a 12V power source with exceptionally loud frequency response (high 510Hz/low 410 Hz). The entire car horn is compact and easy to install, and also comes with a water resistant compressor that powers the horn. We liked the fact that the car horn comes with all the necessary accessories for easy installation so you can set up this horn as soon as possible.

#7 CARMOCAR Electric Car Horn

CARMOCAR Electric Car Horn

The Carmocar Electric Car Horn is one of the loudest car horns we have tested that delivers an incredibly loud 135 dB of sound pressure. It comes with both high tone and low tone car horns with an installation kit with brackets for cars, trucks and SUVs. These car horns are single screw mounting type horns with terminal contacts. The blade type includes 2 universal mounting brackets for easy installation. Furthermore, the car horns are super loud with a sound output of 135 dB with dual tones of 400 Hz – 335 Hz and connect to a standard 12V power source. The car horns come with an integrated air compressor and do not require external air supply. These are loud and powerful dual Supertone horns that add a level of safety to your driving by ensuring that everyone can hear you when you press the car horn.

The sound pressure from the Carmocar electric car horn is very powerful and loud, and delivers a maximum of 135 dB of output power. Furthermore, it uses dual tone horns which ensures that you will be heard when driving on the busy road to alert car drivers and pedestrians. These horns are much louder than the factory car horns, and easily install onto the existing 12V horn system. You can practically press the car horn on a noisy road and the car behind you will immediately be alerted to any situation. We also liked the fact that these car horns have a black coated metal body with a red protective grille for a distinctive and stylish look.

The Verdict? The Carmocar Electric car horn is one of the loudest car horns we have tested with a total output power of 135 dB. It is essentially a two tone car horn with a frequency of 400 – 335 Hz connected to a standard 12V power source. We liked the fact that these car horns are very easy to mount and install in your car, and the package comes with 2 universal mounting brackets for easy installation.

#8 SoundOriginal 125dB Air Car Horn

SoundOriginal 125dB Air Car Horn

The SoundOriginal 125dB Air Car Horn is a dual-tone car horn that delivers a massive 125 dB of power output with two tone frequencies (510 Hz / low 410 Hz). It connects to a standard 12V power source for cars and trucks. We liked the fact that this car horn is essentially a one-piece design with rust protection and a maintenance free compressor, which improves the service life of the car horn. Furthermore, it features a compact design for easy installation with a dimension of 4 ¾” x 3” x 4 ½” and a water-resistant compressor which delivers 18 amps at 12V. We liked the fact that the manufacturer provided a steel compressor and a high impact resistant plastic camouflage black horn with mounting hardware and relay, so you can get this car horn setup in under a couple of minutes.

In terms of sound performance, the SoundOriginal Car horn gets really loud and the dual tone frequencies ensures that any driver or car near you will definitely hear you when you horn. It’s a great fit for trucks and vans where you need a louder car horn to warn pedestrians or drivers in any situation. The electric car horn has a black sound output of 139dB and connects to a 12V electric source. The air horn design eliminates any sound loss by attaching the compressing using a bolt-on design, so that the compressor does not come lose. There’s also an intermediary unit in between the sound unit and compressor to ensure sound integrity and vibration absorption.

The Verdict? The SoundOriginal 125dB Air Car Horn is one of the loudest car horns we have tested that delivers a booming 125dB of output power. It connects to a 12V power source and has exceptionally loud (high 510 Hz / low 410 Hz) dual tone sound. The sound coming from this car horn is very noticeable and will definitely grab the attention of oncoming cars changing lanes or to alert pedestrians. It also features a one-piece design which makes the car horn easy to install and mount, and you can even connect it to existing 12V factory car horn outlets in your car to set it up.

#9 HELLA Black 77mm Disc Horn Kit

HELLA Black 77mm Disc Horn Kit

The HELLA Black 77mm disc horn kit includes some of the loudest car horns we have come across with a sound pressure level of 111 dB(A). These car horns produce crystal clear and loud horn sounds, and will provide safety and attention needed in any situation while driving on the road. These are disc horns which are designed for drivers looking for a car horn with a good price-performance radio and are made of high quality components. Furthermore, these disc horns come with a M8 screw horn bracket with flat connections of 6.3mm (open blade type) for easy installation. They come as dual tone car horns with a high frequency tone of 420 Hz and low frequency tone of 350 Hz. They work easily with any 12V car horn output and can be installed on cars, trucks or vans.

We were surprised at how loud the HELLA Black 77mm disc horns sounded straight out of the box. They are louder and deeper than the original MK3 VW horns and are easy to install. The horns come with brackets and can be easily mounted using a screwdriver. The horns get very loud if you hook them up directly with your battery – they are much louder than the factory car horn and have a mid-range frequency sound. If you press the car horn on a busy road, the horn will definitely be loud enough to alert any car driver around you to your presence. It’s a car horn that really delivers in terms of sound output and quality design.

The Verdict? The HELLA Black 77mm disc horn are some of the loudest car horns you can find that delivers a high volume output of 111 dB with dual tone frequencies (420 Hz, 350 Hz). They provide very good functionality, optimal fit and good price-performance ratio. While these are not the loudest car horns around, they are certainly louder than the factory installed car horns and useful for alerting cars and pedestrians crossing the road. It’s one of the best car horns you can find on a budget and we highly recommend them.

#10 Anxingo Electric Car Horn

Anxingo Electric Car Horn

The Anxingo Electric car horn is a 12V universal vehicle horn that delivers a loud power output of 118dB. These come with a high tone and low tone metal twin horn kit and bracket. They are high performance car horns that will give your vehicle better visibility and increase the range which others will be aware of your vehicle in any situation on the road. Furthermore, these car horns have a stylish design and are made of durable black coated metal body with a red protective grille for a distinctive look. We liked the fact that these car horns are simple to install with only one mounting screw and two blade terminals for electrical connectivity.

We were very impressed by loud how the Anxingo car horns sounded. They get especially loud and adds a level of safety to your driving with 118dB of sound power. The sound pattern is very effective at grabbing the attention of other drivers with a set of high tone and low tone frequencies. These car horns have a universal fit and work with any 12V vehicle including cars, trucks and vans. The sound from the car horns goes very loud and makes a huge impact – you can literally feel the sound coming from these car horns and it’s very hard to not notice your vehicle on the road when you press the horn. If you need a loud sounding car horn that will definitely alert other drivers, go for the Anxingo electric car horn.

The Verdict? The Anxiongo Electric car horn is one of the loudest car horns we have tested that provides a loud 118 dB of sound pressure. It also features one set of high and low tones that create a sound that other drivers will definitely be able to hear. This gives your vehicle better visibility and increases the sound range which other drivers will be aware of your incoming approach. They are made to be simple to install with only one mounting screw and two blade terminals for electric connection – they support standard 12V electrical outputs from your car. They also have a universal mounting design, and will fit nicely into your car or truck without any issues.