11 Best Essential Oil Car Diffusers To Buy In 2021

Essential Oil Car Diffusers

Muddy shoes, wet clothes, and pet hair can make your car smelly. One way to get rid of those odors is to use an oil diffuser, which is easy to install in vents or small spaces inside the car. Oil diffusers come in spill-proof bottles and offer an aromatherapy-like experience on the drive.

If you commute long distances to get off work or spend a lot of time on the road, getting a diffuser with your favorite fragrance can keep you calm and relaxed through the ride. Here we give you a list of the best essential oil car diffusers that exude a lovely scent to make your journey pleasant.

Types Of Car Diffusers

There are three types of diffusers that can be used in cars.

  1. Plug-in: Plug-ins are popular as you can plug them into USB ports or a car’s charging socket. They emit mist at different speeds and often double as humidifiers. They usually have attractive LED lights. 
  1. Vent clips: You can fix vent clips on the exhaust port of your car. They use the heat or cold air in the car’s air conditioning system to slowly release essential oils. They contain oil-absorbing pads and have refillable bottles. They usually last longer than the plug-in variety, but they may be less effective.
  1. Rechargeable: Like plug-in devices, they can be used with rechargeable batteries and do not need to be plugged in all the time. The added benefit of these products is that you can place them anywhere in the car. 

11 Best Essential Oil Car Diffusers

1. InnoGear Car Diffuser

InnoGear Car Diffuser


You can install the InnoGear car diffuser in the car’s cup holder, so that it doesn’t overflow during the drive. It works with a USB connection – just plug it in to for  a refreshing fragrance. The diffuser can last about six hours in intermittent settings, making it an ideal companion for long-distance drives. Even in large vehicles, it can diffuse essential oil fragrance without noise.

The control button on the top, the high-quality BPA-free material and an intelligent automatic cut-off switch make the diffuser safe and easy to use.


  • USB interface
  • Whisper-quiet
  • Compact size
  • Seven color-changing LED lights
  • Works in small and large vehicles

2. RoyAroma Car Essential Oil Diffuser

RoyAroma Car Essential Oil Diffuser


The RoyAroma essential oil car diffuser has a convenient vent clip design to attach it to the air conditioning vents for circulation of the essential oil fragrance. There are two clips in the package with unique designs – a sunflower and a tree of life. It also includes thick pads of different colors that absorb colored essential oils. Just a few drops of oil are needed to produce a long-lasting aroma that lasts up to a week.


  • Two diffuser lockets
  • 12 felt pads included
  • Compact design
  • High-quality stainless steel
  • Clips on easily to AC vents
  • Lightweight

3. Mightyduty Car Air Humidifier

Mightyduty Car Air Humidifier


Mightyduty car air humidifier also doubles as a fragrance diffuser. It has a subtle atomization feature and can release a cool mist and add moisture to the air. The excess moisture immediately reduces dryness and fatigue. It also reduces static electricity and dust in the air to prevent any damage to the eyes and skin.

Easy to use, it has a 180-degree rotation function that allows you to adjust the mist’s direction to achieve the best effect. Just press the button to change the settings, add a few drops of essential oil of your choice to the water to infuse your car with a pleasant fragrance.


  • Fine atomization
  • One-button control
  • Aseptic humidification
  • Purifies air
  • Power-off protection

4. Syntus Car Diffuser

Syntus Car Diffuser


The Syntus oil car diffuser has a color-changing body. It can double as a vehicle’s humidifier, providing you with an attractive device that can effectively remove unpleasant odors while adding moisture to the air. The ultrasonic diffuser is noise-free and has a compact design that can fit in the cupholder.

Operation buttons on the top allow easy access while driving. The 50ml water capacity ensures that it is durable and does not require frequent refills. Adding a few drops of essential oils can relieve fatigue and create a relaxing environment. The cool mist and automatic shut-off features make it safe for children. 


  • Color changing LED lights
  • Compact
  • USB-powered
  • Two misting modes
  • Auto shut-off

5. Lion Palace USB Car Diffuser & Humidifier

Lion Palace USB Car Diffuser & Humidifier


Lion Palace portable USB diffuser has a compact design but can hold 200ml water capacity. The humidifier function releases oxygen to purify and clean the air. It has two modes to emit a continuous mist that lasts for four-and-a-half hours or an intermittent mist that lasts for nine hours to bring lasting fragrance.

The water level window allows you to check the water volume easily and the continually changing LED lights can be adjusted to enhance the ambiance and your mood. It has USB input and USB output ports and runs on a rechargeable battery.


  • Seven color LED lights
  • Noiseless operation
  • Water level window
  • Auto shut-off
  • One year warranty

6. Vyaime Car Diffuser

Vyaime Car Diffuser


Vyaime’s ultrasonic diffuser and humidifier can effectively convert water and essential oil into a beautiful mist, absorb dust and pollutants while providing fresh, fragrant air. The increase in humidity and oxygen can protect your skin and relieves stress during long-distance driving. It has a convenient USB port and a compact design that can fit easily in your car cup holder.

It has a water capacity of 200ml and can run for seven to ten hours in various modes, which can be selected with a single button. Color-changing LED lights further enhance its stylish design. It has an intelligent automatic shutdown feature to prevent malfunctions.


  • Color changing LED lights
  • Auto shut-off
  • BPA-free
  • USB-powered
  • One button operation
  • Noise-free operation

7. One Fire Car Humidifier Diffuser

One Fire Car Humidifier Diffuser


This ultra-convenient diffuser from One Fire fits snugly into the charge socket of your car, and also has two extra USB ports to charge other devices. Use your favorite fragrance in this diffuser for a stress-free driving experience while eliminating unpleasant odors in the car. It effectively cleans dust particles while adding moisture to the air.

This stylish diffuser is noise-free and has an automatic shutdown function, making it safe to use. One-button function makes it easy to adjust while driving.


  • Dual USB charging port
  • Auto shut off
  • 360 degree adjustable neck
  • Extra filter provided
  • Compact

8. Gocheer Car Diffuser

Gocheer Car Diffuser


With a dual switch design, Gocheer essential oil car diffuser is easy to operate because the buttons on the USB cable can be easily accessed while driving. The corrosion-resistant material allows you to drop essential oils directly into the chamber and is easy to clean.

The ultrasonic function quickly dissolves the oil so that the cool mist releases the aroma and increases the moisture content in the air. The device has low noise and can hold 60ml of water to give you a continuous working time of up to six hours. The diffuser also has an automatic shut-off function when it is dry to prevent the danger of overheating. 


  • Seven color changing LED lights
  • Ultra-quiet
  • Double switch design
  • Easy to fill and clean
  • Auto shut-off
  • Corrosion resistant PP material

9. InnoGear USB Car Essential Oil Diffuser

InnoGear USB Car Essential Oil Diffuser


InnoGear car diffuser has a smooth wooden finish and 100% pure peppermint essential oil. Just add a few drops of this essential oil to the water tank to enjoy the benefits of aromatherapy. It can effectively improve concentration while making you energetic, improving drive performance, and eliminating unpleasant odors.

This ultrasonic diffuser can humidify the air to clean the dust in the air and prevent dryness. The compact design ensures that it is tightly secured in the cup holder to avoid overflow. It has two operating modes, and the operation button on the top allows easy access while driving.


  • Two misting modes
  • USB powered
  • 10ml peppermint oil included
  • Compact size
  • Auto-off safety switch
  • Mute operation

10. Kindred Aroma Car Essential Oil Diffuser

Kindred Aroma Car Essential Oil Diffuser


This car diffuser kit from Kindred Aroma comes with two wooden reed sticks, which can naturally absorb essential oils. It includes pure lavender oil, which has therapeutic properties to relieve stress and anxieties and relax you. The adjustable vent clip has a non-slip rubber coating and is easy to fix to the car’s air vents.

The diffuser requires no maintenance, no need to replace the pad, no water injection, and no charge. Using all-natural materials, it has excellent water storage capacity and can last up to 60 days.


  • Wooden reed diffuser
  • Adjustable vent clips
  • Lavender essential oil included
  • Easy to use
  • Lifetime warranty

11. AoMck Car Diffuser Humidifier

AoMck Car Diffuser Humidifier
Buy-NowThis all-black stylish car diffuser from AoMck has a single touch operation and is convenient to use while driving. The compact design makes it easy to fit into the cup holder of a car, and the 55ml container can provide three to six hours of cool mist.

It has two spray modes and can release a pleasant fragrance for three to six hours. BPA-free material makes the diffuser safe to use with children in the car. The diffuser automatically turns off when the water falls below the low waterline, thereby preventing burnouts.


  • Ultrasonic technology
  • Noise-free
  • BPA-free
  • USB powered
  • Auto switch-off
  • Two mist modes

How To Choose The Right Car Essential Oil Diffuser

Here are some of factors you should consider while buying an essential oil car diffuser.

  1. Portability: This is the most important aspect to consider as you need to use it in the car . Look for a compact diffuser with a USB connection. 
  1. Capacity: The larger the capacity, the longer the running time. However, ensure it is not too big because for the cup holder. 
  1. Safety: The materials used are important as you will be using the diffuser in a confined space and you don’t want toxic substances in the air. Choose BPA-free essential oil diffuser with an automatic cut-off function for safety. 
  1. Design: Besides performance, you want a diffuser with compact and stylish design. The design must be car-friendly and fit to the vent, in the cup holder, or the dashboard easily. 
  1. LED lights: Some diffusers have changing LED lights, which add to the ambience in your car. However, make sure that the lighting is subtle and not bright to avoid distractions. 
  1. Durability: Even if the price is a little on the higher side, get a durable diffuser that offers value for your money. 
  1. Ease of use: Choose a diffuser with a button on the top for easy access while driving. 

Essential oil car diffusers are excellent for freshening up the air inside the vehicle and creating a pleasant atmosphere that is relaxing yet without toxic chemicals of any kind. They are easy to use and very safe. Cool mist increases moisture levels and prevents eyes and skin from drying out. So, pick one now to enjoy the benefits of aromatherapy even when you’re traveling.

Recommended Articles: 

The following two tabs change content below.

Wedetso Chirhah

Wedetso Chirhah holds a masters degree in English Literature. He had written content for more than 15 B2B websites and edited school books before joining MomJunction as an editor. Wedetso ensures the articles meet the highest editorial standards. He enjoys making content understandable and relatable to readers, and he is a big fan of the versatile em dash. He also... more