Obd Ii Engine System Diagnostic Tools Comparison - September 2025

Last Updated - September 13, 2025

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Model

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)

Model

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

Model

FOXWELL NT301 OBD2 Scanner Graphing Live Data Diagnostic Code Reader Professional Mechanic OBDII Scan Tool for Check Engine Light 2.8'' Color Screen OBD II Scanner for 1996 or Newer Vehicle

Model

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

Model

ZMOON ZM201 Professional OBD2 Scanner Diagnostic Tool, Enhanced Check Engine Code Reader with Reset OBDII/EOBD Car Diagnostic Scan Tools for All Vehicles After 1996, 2025 Upgraded

Brand

ANCEL

Brand

MOTOPOWER

Brand

FOXWELL

Brand

ANCEL

Brand

Zmoon

Reviews

100,275 reviews

Reviews

41,706 reviews

Reviews

67,779 reviews

Reviews

26,922 reviews

Reviews

15 reviews

Features

Worth the money

9.6

Worth the money

9.4

Worth the money

9.3

Worth the money

9.6

Worth the money

9.1

Simple to use

9.8

Simple to use

9.6

Simple to use

9.3

Simple to use

9.3

Simple to use

8.9

User interface

9.6

User interface

9.4

User interface

9.1

User interface

9.1

User interface

8.6

Precision

9.6

Precision

9.4

Precision

9.3

Precision

9.3

Precision

8.9

Tech Specs

Manufacturer Part Number

AD310

Manufacturer Part Number

NT301

Manufacturer Part Number

AD 410

Manufacturer Part Number

9235

Model

AD310

Model

FOXWELL

Model

AD410

Model

ZM201

Item Weight

9.6 ounces

Item Weight

1.01 pounds

Item Weight

12 ounces

Item Weight

12.6 ounces

Product Dimensions

8.66 x 3.15 x 6.69 inches

Product Dimensions

9 x 6.3 x 1.6 inches

Product Dimensions

3.45 x 0.92 x 6 inches

Available On

Available On

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Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you

9.8
1

ANCEL
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)

9.8 Simple to use

9.6 worth the money

9.6 User interface

Why we love it

The product is easy to use, even for beginners

The product is affordable

The product is equipped with a large LCD display
Main highlights

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.
OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. 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. Note: AD310 is unable to scan vehicles that do not follow the OBD2 protocol.
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.
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. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
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 after you fixed the problem. 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.
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9.7
2

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

9.6 Simple to use

9.4 worth the money

9.4 User interface

Why we love it

The OBD2 code reader can help you determine the cause of the engine light, read codes, erase codes, view freeze frame, and more.

The OBD2 code reader is compatible with most 1996 US Based, 2000 EU Based and Asian cars, and newer OBD II CAN domestic or import vehicles.

The OBD2 code reader is designed with a clear display LCD screen and easy to use buttons.
Main highlights

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.
Screen Protecting Film - There’s a transparent screen protecting film on the screen surface. If any scratches on the film, just tear off the screen protecting film. If any more problem on the screen, just contact our customer service for replacement directly.
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.
Connection Guide - Plug the scanner into the OBDII port on your car, turn on the ignition and then press the OK button to make the connection. To view the live data, please start the engine. If connection failure, please contact motopower directly for assistance.
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.
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.
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9.6
3

FOXWELL
22% Off

FOXWELL NT301 OBD2 Scanner Graphing Live Data Diagnostic Code Reader Professional Mechanic OBDII Scan Tool for Check Engine Light 2.8'' Color Screen OBD II Scanner for 1996 or Newer Vehicle

9.3 worth the money

9.3 Simple to use

9.3 Precision

Why we love it

Read and clear DTCs

Locate bad O2 sensors

Turn off CEL or MIL
Main highlights

[Worthy to Own] Recommended by most professional mechanics on Youtube. Codes analysis and Printer compatible. Unique PATENTED design, 2.8" color screen and 1-year seller assurance with EXCLUSIVE tech and service team. Plug & Play, no need to update before use
[Vehicle CEL Doctor] The NT301 obd2 scanner enables you to read DTCs, access to I/M readiness status, figure out the root reason of check engine light or MIL turned on, monitor sensors test, read live data and retrieve VIN of your vehicle. The fault code only can be cleared after repair finished by NT301, as like all the obd2 code readers' working principle. As a basic code reader, it only support obd2 functions, not support any special functions or battery test.
[S-mog Check Helper] Read/Erase and I/M readiness hotkeys make it easy to use the car computer reader right out of the package. Red-Yellow-Green Leds and build-in speaker indicate the readiness status for confident e-missions test
[Read Fault Codes] About the read code function needs to be in the ignition on state and if the Check Engine light is on. If the vehicle is compatible with NT301, please select correct menu & ensure no hardware/wiring issues/obd2 interface damage for accurate results. The correct menu: Select OBDII/EOBD->Wait for seconds-> Select Read codes
[Please Note] If you are not pleased with your NT301 and choose to return it, please kindly mark it as unsellable to avoid and used one is resold again to other customers. Appreciate very much. If you received the used product or package damage, we also are responsible for this problem and will provide new replacement or refund
[OBDII Protocols & Compatibility] The NT301 supports OBDII protocols like KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. The device is compatible with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs. Kindly check the vehicle compatibility before the purchase. Select correct menu & ensure no hardware/wiring issues for accurate results. Vehicles from 1996-2003 may read data slower due to classic cars or high data volume
[Home Necessity] Open to global customers. No built-in battery required, Plug& Play. NT301 obd scanner is charged directly from the 16pin DLC in your vehicle. It is recommended as a necessity in your toolbox and great choice for Home and Autoshop Mechanics. Not support ABS or SRS system
[Accuracy & Streams] Live data graphing and logging. Accurately read error codes for most Worldwide cars, SUVs, light trucks and 12V diesels equipped with Obd2. Graphing live vehicle sensors data allows you to focus on any suspicious data and trend. It is a engine code reader, it DOESN'T support read datas such as ABS, transmission and others.
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Our ranking system

At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.
While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.

Features

Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.

Consumer Reviews

We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.

Popularity

Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.

Value for money

AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.

Obd Ii Engine System Diagnostic Tools Comparison - September 2025

Our Score

To Amazon

Model

Brand

Reviews

Features

Worth the money

Simple to use

User interface

Precision

Tech Specs

Manufacturer Part Number

Model

Item Weight

Product Dimensions

Available On

Our Top 3 Picks

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)

Why we love it

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

Why we love it

FOXWELL NT301 OBD2 Scanner Graphing Live Data Diagnostic Code Reader Professional Mechanic OBDII Scan Tool for Check Engine Light 2.8'' Color Screen OBD II Scanner for 1996 or Newer Vehicle

Why we love it

Our ranking system

Features

Consumer Reviews

Popularity

Value for money

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Performance Tool W2977 CAN OBD II Scanner Tool for Check Engine Light & Diagnostics, Direct Scan and Read Out

OBD2 Scanner Diagnostic Tool, Check Engine Code Reader OBD2 Scanner with Reset, Mode 6, Mode 8 & I/M Readiness, Auto Check Engine Light Car Diagnostic Scan Tool for All OBDII Car Since 1996

UMEIJA OBD2 Scanner with Upgrade Battery Tester - Diagnostic Tool for Cars That Check Engine Light & Emissions Readiness Read and Clears Vehicle Error Codes for All OBD II Protocol Vehicles Since 1996

Professional OBD2 Diagnostic Scanner Tool - Engine Check Light Code Reader, Battery Voltage Tester, I/M Readiness, Reset, and Code Eraser, Suitable for All OBD II Protocol Car & Truck Since 1996

FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission, Check Engine Code Reader for Cars and Trucks, Diagnostic Scan Tool with SRS Airbag, Automotive Diagnostic Tool with Live Data

Obd Ii Engine System Diagnostic Tools Comparison - September 2025

obd ii engine system diagnostic tools comparison

Our Score

To Amazon

Model

Brand

Reviews

Features

Worth the money

Simple to use

User interface

Precision

Tech Specs

Manufacturer Part Number

Model

Item Weight

Product Dimensions

Available On

Our Top 3 Picks

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)

Why we love it

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

Why we love it

FOXWELL NT301 OBD2 Scanner Graphing Live Data Diagnostic Code Reader Professional Mechanic OBDII Scan Tool for Check Engine Light 2.8'' Color Screen OBD II Scanner for 1996 or Newer Vehicle

Why we love it

Our ranking system

Features

Consumer Reviews

Popularity

Value for money

Related deals you might like for obd ii engine system diagnostic tools

Performance Tool W2977 CAN OBD II Scanner Tool for Check Engine Light & Diagnostics, Direct Scan and Read Out

OBD2 Scanner Diagnostic Tool, Check Engine Code Reader OBD2 Scanner with Reset, Mode 6, Mode 8 & I/M Readiness, Auto Check Engine Light Car Diagnostic Scan Tool for All OBDII Car Since 1996

UMEIJA OBD2 Scanner with Upgrade Battery Tester - Diagnostic Tool for Cars That Check Engine Light & Emissions Readiness Read and Clears Vehicle Error Codes for All OBD II Protocol Vehicles Since 1996

Professional OBD2 Diagnostic Scanner Tool - Engine Check Light Code Reader, Battery Voltage Tester, I/M Readiness, Reset, and Code Eraser, Suitable for All OBD II Protocol Car & Truck Since 1996

FOXWELL Car Scanner NT604 Elite OBD2 Scanner ABS SRS Transmission, Check Engine Code Reader for Cars and Trucks, Diagnostic Scan Tool with SRS Airbag, Automotive Diagnostic Tool with Live Data

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