Top 10 Best Car Diagnostic Tools in 2021 Reviews

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Looking for the best car diagnostic tools in 2021? The market is flooded with wide variety of tools with different features. And, sometimes it’s hard to find the best one that fits your requirements. To solve your problem, we have carefully reviewed top 10 car diagnostic tools for you.

Car diagnostic tools are devices used to diagnose your vehicle system. They are widely used by mechanics, auto technicians, and even DIYers. In the past, technicians used to use these tools with the help of manually following the instructions. Now, with the advent of advanced technologies, you can do it yourself. These tools are available in various sizes, shapes, and prices. So, you need to analyze your requirements before making your purchase.

The best automotive diagnostic tools can save you unnecessary visits to the mechanic and expensive repairs. These tools can turn off the check engine light. OBD2 diagnostic scanner tools are a must if you own a car. They offer a wide range of services, from turning off the check engine light to resetting the oil. Scanners are also ideal for ECU programming, key coding, ABS purging, bi-directional fuel injector coding, etc. These tools are so effective that they can save you money in the long run. A car diagnostic tool is one of the best investments you can make for DIY repairs.

In this article, we will help you find the best diagnostic tools on the market. These are high-end diagnostic tools with very interesting features. OBD diagnostic tools can help you solve small problems and save you the time and expense of a store visit. You can rest assured that your car is in good condition and safe to drive. Read on and carefully choose the automotive diagnostic tool that best suits your needs and requirements.

10. ANCEL AD310 classic diagnostic advanced universal OBD

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This is a classic OBD II scanner design for quick scanning and troubleshooting with clean code. It is easy to use for beginners. It saves you time by detecting and correcting errors. The scanner is universal and works with most US, EU and Asian vehicle models since 1996. It’s pretty easy to figure out the cause of the Check Engine light and turn it off. The scanner also checks the readiness test and displays still image data. Overall, this is a well-built scanner with a large screen. The scanner is equipped with a backlight and contrast control for good readability. In addition, the scanner is equipped with a long cable for flexible use.


  • Flexible use thanks to long cable
  • Easy to read data thanks to a large, clear display
  • Easy identification and extinguishing of the engine warning light
  • Compact and lightweight for easy transport

9. AUTOPHIX OBD2 extended vehicle code reader

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This is a tool that allows you to read and clear your vehicle’s fault codes. You will be able to find and fix your exhaust problems quickly. This tool also allows you to turn off the check engine light and check if it turns back on. It has a DTC library where you can find code definitions and related problems. The scanner is pretty easy to set up and use. It has a large 2.4 TFT screen for easy reading of the code. In addition, this scanner offers a wide range of diagnostic functions. It can diagnose most USM, European and Asian vehicles from 1996 onwards. It also supports more than 10 languages, making it quite versatile. All in all, it is a powerful scanner with 14 built-in special features.


  • 14 integrated, powerful special functions
  • 10 languages for multiple use
  • DTC library for easy code explanation
  • Easy to use and operate


  • No user manual, but easy to understand

8. FOXWELL NT201 OBD2 Scanner

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This is a simple but effective OBD2 scanner that you should consider buying. The analysis tool can check the cause of the engine light and turn it off. This tool saves you money and time when you visit a mechanic. It is a scanner with a one-click I/M readiness check function. The scanner enables a quick check of the flue gas availability. It also monitors the driving cycle and condition of your vehicle. There is an additional on-board monitor test to check the O2 sensors and turn off the Check Engine light. Overall, it’s a functional scanner with a long range and the ability to use multiple languages. This is an essential tool in your car’s toolbox that you should seriously consider purchasing.


  • Broad scope and multiple languages
  • Smog control at the touch of a button for efficient operation
  • Compact and light, so portable
  • Live data in graph form for easy viewing and interpretation of data


  • Not mentioning the code description

7. Cobra The latest version of OBD2 vehicle code reader

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It is an accurate vehicle code reader for diagnosing and eliminating all engine warning lights. It is a smart choice of code reader that can turn your car into a smart car. The scanner comes with over 3,000 definitions for easy reading and explanation. This is a decent car scanner that can diagnose in seconds. It is a mechanic-approved code reader that has worked on most car models since 1996. This scanner is very well reviewed and is a good addition to our list. It is a risk-free code reader that meets the highest quality standards.


  • Works with most vehicle models
  • Diagnosis in seconds, time-saving
  • Removal of the Engine Warning Light
  • Over 3,000 code definitions for easy code explanation


  • Lack of clear instructions

6. KONNWEI KW310 OBD2 Full OBDII Scanner

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This is a functional OBDII scanner for the professional engine check engine. It is a diagnostic tool with advanced features and real-time data support. This scanner can read and erase code errors in seconds. It is an embedded network monitoring scanner with pretty interesting features. The scanner is universal and works with all American, European and Asian vehicles from 1996 onwards. It is a simple diagnostic tool to determine the condition of the vehicle. Overall, this is one of the best scanners on the market that you should consider buying. It also comes with a 3-year warranty.


  • Works on a variety of vehicles, so it’s versatile.
  • Simple design for easy connection and operation
  • Full OBD2 modes, so reliable
  • Cause of check engine light on/off


  • The power cord is a bit too hot

5. NEXAS EN OBD2 Scanner Check Engine Light Auto

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It is a compact and lightweight vehicle code scanner with a protective housing. This is the top version that supports 10 modes. The analysis tool reads the error codes and clears them. You can also view the I/M parity, freeze frame data, data flow and automatic data recovery. It is a robust design scanner capable of capturing real-time data displayed in graphical form. The scanner works efficiently and is always and everywhere in the car. Overall, it is a high quality auto code scanner with a unique battery check feature. The scanner supports multiple vehicle models and languages for universal use.


  • Support for multiple vehicle models and languages
  • Real-time display of data graphs for easy reading
  • Portable and compact carrying case
  • The scanner supports 10 full modes

4. LAUNCH CRP123 OBD2 engine scanner

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This is a premium scanner with excellent functionality. The scanner allows the vehicle owner to pre-set and view various data. It can also transmit real-time data on the engine, ABS, SRS and AT. The scanner is equipped with a large display for easy reading. It can plot, record and reproduce data by printing it out. Overall, it is an advanced scanning program that can perform several functions. This scanner provides full vehicle coverage with an OBD 2 scanner. It is a highly recommended scanning tool with clean DTC codes.


  • Removal of DTCs for easy explanation
  • Compact and light, so portable
  • Full OBDII support
  • Universal and suitable for most vehicle codes

3. Autel AutoLink AL519 OBD2 Scanner Comprehensive Mode

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This is a simple car control engine light scanner that you should consider buying. It is a quality scanner with advanced modes for universal use. It is an automotive diagnostic scanner that detects and eliminates the engine check engine light. The scanner also carries out the necessary repairs and provides advice on definitions. It is a scanner with a robust design and a wide range of modes to meet different needs. Overall, this is a high-quality OBD2 scanner with unmatched vehicle coverage. The scanner is equipped with a patented one-touch detection function for hazardous substances. It helps your vehicle to pass the various government inspections with ease. This is combined with a lifetime warranty and a risk-free purchase for a safe purchase.


  • Patented SMOG control at the touch of a button.
  • Unparalleled OBD 2 vehicle coverage
  • Performs all 10 OBD2 test modes
  • Lifetime warranty and free upgrades

2. Thinkcar Thinkobd OBD2 Scanner

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This is a top of the line OBD 2 scanner with some interesting features and reviews. This is a universal scanner with full OBD 2 capability. This scanner is not expensive and one of the cheapest on this list. The scanner has 10 advanced Obd2 modes and can perform various diagnostic functions. It can easily read and erase codes. It is a diagnostic scanner suitable for do-it-yourselfers. It is a high quality device with a wide vehicle range. The scanner also supports 7 languages for universal use. In addition, this scanner has a DTC search function to retrieve all defined codes. The scanner is versatile and highly recommended.


  • Supports 10 Obd2 modes
  • 7 language support and full vehicle diagnostics
  • Cost effectiveness and reliability
  • DTC Research Library

1. NEXPOW Automotive OBD2 Scanner

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This is a recently upgraded OBD2 car scanner with many distinctive features. The scanner can determine the cause of the indicator light, read and erase codes, display still images, perform a
I/M readiness test, determine the BAT battery, vehicle information, data flow, etc. It’s a light and compact reader worth buying. The scanner is quite easy to use. It also has backlit buttons for easy operation. As a beginner, you can easily diagnose and clear fault codes. In fact, it is a one-click DTC scanner to find all code values. It also has a clear, easy-to-read LCD display.


  • Easy to read data thanks to a large LCD display
  • Search DTCs with one click
  • High compatibility
  • Lightweight and easy to use


  • Small learning curve

Factors to consider when choosing the best OBD II scan diagnostic tool

The best vehicle diagnostic tool should offer an optimal balance of size, weight and functionality. You need a diagnostic tool that reads all vehicle faults effortlessly. Below, we look at the important factors you should consider when choosing an automotive diagnostic tool.

Simple installation and operation

Consider diagnostic tools that are easy to set up and use. Finally, these diagnostic tools are designed to be used by car owners for diagnosing any defect in the vehicle. You don’t need a complicated and difficult to use tool. The ideal vehicle scanner should be able to be configured in a matter of seconds and without difficulty. This is especially important for novice drivers and those without strong driving skills.

Errors and explanations

The best car diagnostic device should display and explain your car’s defects. Although most diagnostic tools include an explanation of the problems, most only display the error codes. They force you to go to the internet and look up the meaning of the code. List the devices that indicate the error and explain their significance. This saves you time and you know what to do next.

Measurement accuracy

The effectiveness of the best car diagnostic scanner depends on its results. If the results of the scan are not accurate, there is no point in having a scanner. Make sure you choose a scanner that can provide accurate and reliable information.

Maintenance readiness check

A good car scanner should perform basic engine tests to make sure your car is in good condition. Consider a scan with an I/M readiness test. This way, you can be sure that your vehicle is in excellent condition and can pass the various government tests.

Height and weight

Next, you need to consider the size and weight of the scanner. A heavy, bulky scanner is only suitable if you don’t need to carry it everywhere. However, if you want to take the scanner with you wherever you go, it’s best to consider a portable, lightweight scanner.

On-line data and graphics

The best OBD II scanner should connect to your vehicle’s engine system and provide real-time data on engine speed, timing and other engine parameters. Better yet, this information can be presented in clear diagrams for easy understanding.

Final assessment

In summary, these are the best automotive diagnostic tools on the market that you should consider buying. The tools are very easy to use. They can easily diagnose most vehicle problems and troubleshoot for efficient operation. Use these tools to check the cause of the Check Engine Light coming on and turn it off. They are efficient, easy to use and indispensable for car owners.

This source has been very much helpful in doing our research. Read more about best professional automotive diagnostic scanner 2019 price and let us know what you think.

Frequently Asked Questions

Which is the best car diagnostic tool to buy?

Modern cars are more technologically advanced than ever, which is great for drivers and passengers. However, this also means that more things can go wrong. As a result, keeping your car in the best possible condition is an absolute must. Because of this, many drivers are considering buying a car diagnostic tool to help them fix any issues. If this sounds like you, then you’re not alone — and we’re here to help you find the right one. Some of the most popular models include: Buying the best car diagnostic tool for the job can be difficult. Luckily, we’ve compiled a list of the best car diagnostic tools for sale today, so you can find the one that suits you.

What scan tools do mechanics use?

The OTC (original equipment) scan tool that came with your car couldn’t really be described as “state-of-the-art” (or even “state-of-the-genre”). That’s probably why you’ve decide to look into buying a scan tool to use in your shop or to keep in your own toolkit. Fortunately, scan tools are both affordable and easy to use. Do you own a car, truck or other vehicle that is more than five years old? Does it have a check engine light on? If you answered yes to either question, then you may be a candidate for a scan tool. Scan tools are devices used by mechanics and other automotive professionals to diagnose problems with automotive computer systems. The tools are often used to read and clear trouble codes in an engine’s computer, allowing mechanics to troubleshoot any impending issues and suggest a course of repair. The first step to diagnosing a vehicle’s check engine light is to identify the source of the problem. After a brief test drive, the mechanic can plug a scan tool into the vehicle’s diagnostic port to read the diagnostic trouble codes (DTCs

What is the best snap on diagnostic scanner?

The best snap on diagnostic scanner isn’t just one scanner or one type of scanner. It’s a scanner that is able to plug into the OBD2 port in the car and provide data that allows users to better understand what’s going on with the car. The best scanners are the ones that can collect the most data and provide the most useful data, but there are plenty that get the job done. In this review we look at some of the best snap on diagnostic scanners. There are many reasons to consider buying a diagnostic scanner for your car, either because you want to check your car’s performance or you want to service it yourself. However, finding the right tool can sometimes be a challenge.  In this article, we’ll discuss why a diagnostic scanner is important, what features you should consider when choosing, and we’ll examine some of the best diagnostic scanners on the market.

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