The Best Auto Tester of 2022 – Reviews & Buying Guide

After hours researching and comparing all models on the market, we find out the Best Auto Tester of 2022. Check our ranking below.

2,001 Reviews Scanned

SaleRank No. #1

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on, quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself.
Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble codes in seconds. If you want to find out the cause of the check engine light, this device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. This is not the case with the AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Check compatibility with your vehicle model before purchasing.
Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car.

Rank No. #2

WINAMOO Automotive Test Light with 3-48V LED Digital Voltage Display, Auto Circuit Tester with Voltmeter & Dual Color Polarity Indicate, Electric Test Pen w/Stainless Probe for Car/Truck/SUV Checker

【PRECISE READOUTS & CLEAR DIGITAL DISPLAY】Bright LED display shows highly clear readings in any lighting condition, 0.1V resolution gives you reliable indication and shows you the voltage number easily & quickly. Bidirectional light emitting diode on the circuit board for easy battery load testing, red light indicates positive polarity, green light indicates negative polarity.
【QUICK DETECTION & EXTENSIVE USE】WINAMOO auto circuit tester helps you to quickly test car battery voltage and diagnoses issues in 3V-48V systems, including alternator tester functionality of car/truck/SUV/boat charging systems. Also to inspect circuit tester integrity of headlights, taillights, turn signal circuits, faulty sockets, fuse connections and more.
【SHARP PROBE & ANTI-LOST PROTECTIVE SLEEVE】Sharp stainless steel probe for piercing insulation with ease, also for hard to reach tight areas. Integrated anti-lost protective sleeve to secure the probe during storage and safeguarding against damage, making sure no stab and wound and won't be lost wherever you go.
【EXTENDED SPRING WIRE & LARGE ALLIGATOR CLIP】High quality 96 inch long enough spring wire increases flexibility to access across broad areas when testing. Attaching with large crocodile clip for easy single-handed operation, which is boosting the efficiency for car battery capacity checks and beyond.
【ULTRA-DURABLE & SAFE CONSTRUCTION】This voltage tester pen adopts ergonomic handle for comfort and safe grip. Constructed with premium ABS body with higher transparency, shatter-proof and durable. Ensuring reliable battery meter and circuit analysis for safe operation, making them an essential tool in electrical troubleshooting.

Rank No. #3

WINAMOO Automotive Test Light 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Light Tester, Electrical Voltage Tester with Extended Spring Wire & Probe for Car/RV/Vehicles

【LED Digital Display】: WINAMOO automotive circuit tester with LED digital voltage display for accurate volt readouts. Compared with LCD lights, LED lights are not affected by the brightness of light, so that be clearly read in daytime or dark areas.
【Extended Spring Wire with Alligator Clip】: Maximum extended to 110 inch long enough spring wire increases flexibility and a wide measuring area when testing, anti-bending design of the tail wire makes no worry about bad contact of the line. Along with large size alligator clip for easy one-hand operation.
【Bidirectional indicating light】: There is a bidirectional light emitting diode on the circuit board for polarity indication, red light indicates positive polarity & green light indicates negative polarity. You can attach the alligator clamp either to negative or positive ground, while using the probe to touch the other side.
【Computer Save】: This premium car fuse tester has a built-in circuit board chip, safer and more durable than traditional test lights. Equipped with insulation protective cover, it provides better grip and insulation protection against electric shock. This circuit board with line protection function, which is safer and more burn-resistant.
【Widely Use】: This auto electric tester pen is ideal for checking various vehicles electrical circuits. Sharp long probe is used to pierce wires and reach into narrow areas, quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and more, suitable for your daily use.

SaleRank No. #4

AMTIFO OBD2 Scanner with Battery Tester - Check Engine Light & Emissions Readiness, Plug & Play, Battery Health, Real-Time Date, Car Code Reader, Support All OBD II Vehicles

Comprehensive Vehicle Diagnostics - Car code reader supports nine OBDII/EOOBD protocols, providing complete diagnostics for all car types. Easily read and clear check engine light codes for accurate troubleshooting
Battery Health & Voltage Monitoring - Code reader for cars and truck sexclusive battery tester checks battery life, charge, and voltage, keeping you informed of your car's battery status at all times
Real-Time Data Streaming - Car scanner access live data with clear graphs, enabling you to monitor vehicle performance in real-time and ensure emissions readiness for smog checks
User-Friendly & Multilingual - Simple plug-and-play setup with a responsive color screen. Supports 13 languages, making diagnostics accessible to users worldwide.
Durable & Compact Design - Built to last with a rugged exterior for easy handling. Portable and convenient, ideal for DIY diagnostics at home or professional use in shops.

SaleRank No. #5

MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

Multi-Functions - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.
Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
2.8" LCD Display - Designed with a clear display 2.8" Large LCD screen - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector.
Compact Design - Car diagnostic scanner is equipped with a 2.5 feet long cable and made of a very thick flexible insulator.There are 6 buttons on OBD2 Scanner:scroll up/down,enter/exit and buttons that quick query VIN vehicle number& the DTC fault code.
ABS / Airbag codes NOT Supported - It is able to read and clear check engine information which is part of OBDII system, but it cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.

Rank No. #6

CMTOOL Power Circuit Probe Tester 6V-24V DC Test Light, Automotive Circuit Tester Car Short Finder, Component Activation, Polarity Identify, Overload Protection

【Wide Application & Overload Protection】The power circuit probe tester is made of ABS material, which is moisture-proof, high-temperature resistant and has a longer service life. It is suitable for diagnosis of all DC 6V to 24V automotive electrical systems and can work well on cars, trucks, boats, trailers, and motorcycles. The tester also has an overload protection device, When the current exceeds 7A, the circuit breaker inside the device will automatically trip and give out a buzzer prompt.
【Polarity Test & Continuity Test】The power circuit probe tester is made of insulating material and high-quality stainless steel tip, which can help you quickly identify the positive and negative polarity of the vehicle cable and plug. When the dc circuit tester touches the positive pole, the LED should be red; when it touches the negative pole, the LED should be GREEN. The power circuit probe tester is also used to check the continuity of switches, relays, diodes, fuses, and circuits.
【Component Activation and Testing】The automotive power circuit probe tester can activate components inside/outside the vehicle electrical system, perfect for professionals or car enthusiasts. The LED indicator light and buzzer prompt make it easy to test and check whether the component is defective or whether the rated current of the component is higher than the rated current of the car test light.
【Grounding Test & 4M Test Lead】The electric circuit tester has a ground prompt device, if the LED indicator turns green and the buzzer sounds, it means the ground is good. If not, the LED remains red and does not beep. The automotive circuit tester is equipped with a 4M extended detection line, covering the front to the rear of the vehicle, making it easy to test the entire vehicle circuit system.
【Tracking and Locating Short Circuit】The power circuit probe tester uses advanced high-sensitivity probes to provide you with fast and accurate detection. Using this automotive test light can save a lot of time to troubleshoot the car wiring circuit, to quickly and accurately find the faulty wire and its fault point.

Rank No. #7

ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow

WIDE COMPATIBILITY – Trusted by YouTube Star Scotty Kilmer. The AD410 OBD2 Scanner supports all 16PIN vehicles that comply with the OBDII protocol, including KWP2000, ISO9141, J1850 VPW, J1850 PWM, and CAN. This OBD2 code scanner compatible with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles. Multilingual support (English, German, French, Spanish, etc.), this car code reader is ideal for international users. Check compatibility with your vehicle model before purchasing. !!! Powered directly from your vehicle's OBDII connector, this diagnostic tool doesn' t need a battery or charger.
CRITICAL FUNCTIONALITY – Quickly Read & Clear Fault Codes. The AD410 obd2 scanner diagnostic tool quickly reads and clears stored emissions-related codes, pending codes, and provides code definitions. With over 42,000 built-in DTC lookups, you can easily identify faults without the need for Google searches. Reset the MIL, check monitor readiness before smog tests, and understand your vehicle's health before costly repairs. !!! Note: Fault codes can be cleared after resolving the underlying issue, the code reader itself does not have a reset function.
ENHANCED OBDII DIAGNOSTICS – Comprehensive System Testing. This engine obd2 scanner diagnostic tool offers advanced diagnostics, including testing of O2 sensors and EVAP systems. Perform a leak test on your vehicle's EVAP system and monitor the fuel tank's integrity. The O2 sensor test helps fine-tune the air/fuel mixture, improving fuel efficiency and reducing emissions—saving you money at the pump and reducing your car's environmental impact. !!! Note: The AD410 is only an engine code reader, it DOESN'T support other systems such as ABS, SRS, Transmission and others.
QVGA DISPLAY & NEW UI – Easy-to-Use, User-Friendly Interface. The AD410 scanner for car boasts a 2.4 TFT true-color LCD display (262K) for clear, easy-to-read results. With an intuitive UI design, you can quickly access OBDII diagnostics, I/M readiness checks, DTC search, and setup options. No need to read a manual—this user-friendly auto diagnostic code scanner is perfect for beginners, mechanic and seasoned users alike.
DIAGNOSTIC REPORTS & FREE LIFETIME UPDATES. The AD410 car scanner reader allows you to review, save, or print detailed diagnostic trouble code reports. Plus, with lifetime free software updates, you’ll always have the latest features and bug fixes. Simply download the updates from the ANCEL website and follow the easy on-screen installation instructions. (Note: update is not necessary, the AD410 code reader can be directly inserted into the OBDII interface of the car to use, if it doesn't work, then consider updating the device.) The ANCEL website provides the latest product user manual, which can be downloaded and viewed at any time.

Rank No. #8

Test Light Automotive, Circuit Tester 6V-12V-24V Car Electrical Test Pen with Continuity Voltage Electrical Fuse Tester for Sedan, SUV, RV and Truck

Safety of use: This automotive test light ergonomic design handle for a safe grip and comfort. Made of high quality people friendly material, more transparent, shatterproof and sturdy, and can withstand long-term rough use. High quality wire offers more flexibility, lighter and more solid than normal cable wires, will definitely improve your working efficiency
Bidirectional Current Voltage Testing: You can utilize an electric tester pen. Connect the alligator clips of the pen to either the negative or positive terminal, and then use the probe to diagnose shorted or defective fuses on the other side
Exceptional Quality: The test light automotive features long, sharp stainless steel probes for easy wire piercing and access to tight spaces. Insulated rubber tips provide protection against electric shocks. Crafted from high-quality acetate, the body is shatterproof and more solid than competitors. The premium PU wire is heat and oil resistant, ensuring safe operation
Quality Bulb: This automotive circuit tester has a built-in quality light bulb that provides a bright and reliable light indication. High visibility bulb to indicate circuits’ signal, the brightness of the light will be different with the different measured voltages
Wide Application: Multi-purpose automotive circuit tester/circuit test light has a voltage testing range of 6-24V DC. It is ideal for checking electrical circuits in various vehicles, such as turn signal circuits, headlights, taillights, motors, fuse connections, and other 6-24V DC circuits

SaleRank No. #9

Lqito Lqito Multifunctional Car Circuit Tester Component Activation Electrical Tester 6-24V/3.5-36V AC/DC Car Power Tester Digital Display Short Circuit Finder for Continuity Testing

🔺Introduction: This Multi-function Automotive Circuit Tester designed for automotive electricaland line maintenance and testing.Can be used to test battery voltagevalue, voltage polarity, conductivity, check lamp, check motor, heel Traceand locate faults such as short circuits and poor ground contacts
🔺Specificities：The power circuit probe tester uses advanced high-sensitivity probes to provide you with fast and accurate detection. Using this automotive test light can save a lot of time to troubleshoot the car wiring circuit, to quickly and accurately find the faulty wire and its fault point
🔺Reliable and Convenient：Equipped with a 4.5M extended detection line, covering the front to the rear of the vehicle, making it easy to test the entire vehicle circuit system.Equipped with an LCD display that allows the user to easily test voltages in the range of 3.5 V to 36 V and display the values on the screen, making it suitable for various automotive applications. Do not use for all AC and greater than 36V source environment.
🔺Easy to Use:The red clip is connected to the positive terminal of the battery, andthe black clip is connected to the negative terminal of the battery;thereupon the blue digit shows the current battery voltage value, and turnon the front light; Connect inversely,The voltage value is not displayed,but the lamp is still on
🔺Package Including:Tester, Accessories, Instruction Manual

Rank No. #10

KAIWEETS 0.8V-100V DC Smart Automotive Test Light, Buzzer Circuit Tester with Sharp Probe, Bidirectional Voltage Tester with Flashlight, Electric Test Pen for Car Battery Polarity Continuity Fuses

Smart Mode : The professional automotive circuit tester defaults to SMART mode. Automatically senses between DC voltage, continuity and resistance testing without having to change any settings for the highest precision, making it easy to use
0.8-100 V Wider Testing Range : Upgraded technology allows for measuring a maximum voltage of 100 V, outperforming the majority of auto electrical testers available on the market. Widely and perfectly for examining different vehicles’ electrical circuits, such as automotive headlights, taillights, faulty sockets, and fuse connections, as well as other 0.8-100 V DC wirings and circuits
Buzzing & Accurate Digital Reading : Buzzer sounds during continuity testing. 0.1 V resolution ratio with high accuracy. The test light with voltage display features a bright green backlight LCD digital display that provides accurate volt readouts, clear and visible for day and night
Quality Made & User-friendly : Our high-quality materials, unlike plastic test light bodies, are more secure to test. Its size and sharp test light probe are just right for tight areas like under the dash and a protective cover is attached to the coiled wire so you can protect against damaging things when you're done with it
Rest Assured to Buy : If durability is what you seek in a circuit testing tool, look no further. This digital test light comes with a nice little storage pouch to keep it in and a spare battery. And 3-year after-sales service and lifetime technical assistance are provided

Last update on 2025-07-11 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best Auto Tester?

Do you get stressed out thinking about shopping for a great Auto Tester? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Auto Tester, which is why we have assembled a comprehensive list of the greatest Auto Tester available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Auto Tester that you consider buying. Your questions might include the following:

Is it worth buying an Auto Tester?
What benefits are there with buying an Auto Tester?
What factors deserve consideration when shopping for an effective Auto Tester?
Why is it crucial to invest in any Auto Tester, much less the best one?
Which Auto Tester are good in the current market?
Where can you find information like this about Auto Tester?

We’re convinced that you likely have far more questions than just these regarding Auto Tester, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Auto Tester, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Auto Tester. Make sure that you are only using trustworthy and credible websites and sources.

We provide an Auto Tester buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Auto Tester currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of Auto Tester has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an Auto Tester?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Auto Tester.
Customer Ratings: Number ratings grade Auto Tester objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Auto Tester.
Product Quality: You don’t always get what you pay for with an Auto Tester, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Auto Tester is should be an indication of how long it will work out for you.

We always remember that maintaining Auto Tester information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Auto Tester is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

The Best Auto Tester of 2022 – Reviews & Buying Guide

How Do You Buy The Best Auto Tester?

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