The 6 Best car key breathalyzers (2023 reviews)

If you are looking to buy an all-around great breathalyzer for your daily purpose, bactrack car key breathalyzer is the right option. Really, this thing is probably idiot proof and fun to have at parties. This tool gives a numerical readout that can be used to help one to realize the real degree of impairment. It comes with a handy case for storage and extra tubes. It comes with multiple blowers so you can share with friends. It is perfect for on the go. It is only recommended for hygienic/sanitary purposes. This is a great tool to use to check yourself after having a few drinks (or one) and before getting behind the wheel of your car.

Why We Like This:

Food, no alcohol, no smoking, not even water
A great way to monitor your alcohol consumption
A great tool to keep in the car
Accurate, durable, quick, and there are variables

Best For vehicle: Qtlier car key Breathalyzer

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The qtlier car key breathalyzer is satisfactory and appropriate and fits well with your daily usage. Proper use of this breathalyzer can prevent you from getting into trouble with a criminal DUI, and the test results are very accurate. It is great to keep in your car so that you know when its safe to drive. It is an invaluabl aid to determine when it is safe to drive. It is only 126x51x23mm, and weighs only 90g, which is very convenient to carry on the go out and it can easily be put in the bag and car.

It comes with a fancy case, chargers, and extra mouth pieaces. It is easy to use very convenient when people come over and have a couple drinks easy to if they are sober or not.

Why We Like This:

Comes with several mouth pieces and a charger
Lot of satisfied buyers

Best little Device: BACTRACK Alcohol Tester

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Next on the list, we've got yet another breathalyzer that manages to win our hearts. It's the bactrack alcohol tester and it's widely considered as breathalyzer that has the most suitable features. The Keychain model can be put on your own keychain so it is there whenever you need it. It's tiny, portable, and works exactly as expected. The innovative fold-out mouthpiece ensures only your breath goes into the alcohol tester, while other airborne pollutants are kept out. This one you can change batteries so it has a longer life.

Its mouth piece can be fold nicely without touching other things. They can be useful for determining whether a person has been drinking at all or not, but that's about the extent of their reliability. It's easy to use if you follow the directions and wait for 15 minutes. It is easy to use if you follow the directions and wait the 15 minutes. This is perfect for managing your awareness.

Why We Like This:

Very compact and easy to use
Handy size, nice color, easy to read, all in all a very pleasant purchase
Lot of satisfied buyers

Best For keeping Friends: Fftopu car key Breathalyzer

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We would, of course, be remiss if we didn't mention fftopu car key breathalyzer for daily purpose. The upgraded breathalyzer uses a fuel cell to provide faster, more accurate test results. It is really eye opening and also fits into the pocket/purse easily. The back of the device also has a built-in mouthpiece. The display screen is very easy and clear to read.

The breathalyzer comes with a small Ziploc bag of spare mouth pieces. It comes with a velvety drawstring bag and extra mouth pieces. It is great for keeping friends out of trouble. The compact size makes it perfect for carrying in the pocket, for a casual night out or a special occasion.

Why We Like This:

Came with a nice carrying case and several reusable mouth pieces
Fits in your jacket pocket or glove box, works well
Operation is fairly simple and easy
Super affordable, great to keep with you just to be safe

Best For measuring ketosis With One caveat: GREENWON car key Breathalyzer

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Greenwon makes beautiful and great breathalyzer with classic and smartly choosen materials. It is an inexpensive way to confirm ketosis. It’s a good keychain breathalyzer that you can take anywhere and it comes with additional mouthpieces, very easy and simple to use too. It is space-saving, lightweight. The Pocket-size allows you to take it anywhere and anytime, and it's convinent and easy to use. It is designed with low power indication.

The LCD display is clear and easy to read, and the audible alert is a useful feature that provides an additional layer of assurance when determining if it's safe to drive. It is recommended to take 3-4 different measurements to ensure a safe level, especially when needed. It comes with a few mouth pieces.

Why We Like This:

Pocket-size breath alcohol tester nice to have
Funny to use with your buddies at a party or hanging out at home
Compact and convenient alcohol tester with a few minor drawbacks
Highly sensitive actually helps you not drink too much

Best For gaging driving ability: Qtlier Alcohol Tester

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate breathalyzer. The qtlier alcohol tester is exactly that - it's a simple breathalyzer that hits all the right notes. It's an asset when you are out drinking, to know if your able to drive or not. It looks like a pretty nice breathalyzer, it's light weight and comes with mouth pieces. It is compact, measuring only 4.84in2.17in0.75in, and runs on 3 AAAA batteries. It is easy to use and works well. It works well and comes with a handsome carrying case with plenty of extra mouthpieces. The display is bright and easy to read. It's great to throw in your purse before a night out so you can feel good about driving.

Why We Like This:

Easy enough for a blonde to use
Nice case and extra blow strips
Great product and fun to use
Great device, fast, small, affordable and accurate