Obd Ii Engine System Diagnostic Tools Comparison - May 2025

Last Updated - May 21, 2025

Our Score

To Amazon

View DealOn Amazon

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 Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

Model

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

Model

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

Brand

ANCEL

Brand

MOTOPOWER

Brand

FOXWELL

Brand

FOXWELL

Brand

WEJOWE

Reviews

132,969 reviews

Reviews

109,677 reviews

Reviews

78,975 reviews

Reviews

9,771 reviews

Reviews

438 reviews

Features

Worth the money

9.6

Worth the money

9.4

Worth the money

9.3

Worth the money

9.1

Worth the money

8.6

Simple to use

9.8

Simple to use

9.6

Simple to use

9.3

Simple to use

9.1

Simple to use

8.6

User interface

9.6

User interface

9.4

User interface

9.1

User interface

9.6

User interface

9.1

Precision

9.6

Precision

9.4

Precision

9.3

Precision

9.1

Precision

8.6

Tech Specs

item weight

9.6 ounces

item weight

10.2 ounces

item weight

5.6 ounces

item weight

3.05 pounds

item weight

11.7 ounces

manufacturer part number

AD310

manufacturer part number

MP69033

manufacturer part number

NT301

manufacturer part number

NT604 ELITE

manufacturer part number

V519T201

customer reviews

4.6 4.6 out of 5 stars 44, 323 ratings 4.6 out of 5 stars

customer reviews

4.6 4.6 out of 5 stars 36, 559 ratings 4.6 out of 5 stars

customer reviews

4.5 4.5 out of 5 stars 26, 325 ratings 4.5 out of 5 stars

customer reviews

4.3 4.3 out of 5 stars 3, 257 ratings 4.3 out of 5 stars

customer reviews

4.5 4.5 out of 5 stars 146 ratings 4.5 out of 5 stars

product dimensions

8.9L x 6.9W x 1.4H

product dimensions

6.02 x 2.75 x 0.91 inches

product dimensions

8.66 x 3.15 x 6.69 inches

product dimensions

7.68 x 3.54 x 1.18 inches

product dimensions

special features

check engine

special features

DTC lookup library, Data Flow, Real-Time Graphic View, View Freeze Frame

special features

1. Check engine/live sensor test data, 5. OBDII monitors supported: Misfire Monitor, Fuel System Monitor, Comprehensive Components Monitor, Evaporative System Monitor, Secondary Air System Monitor, Air Conditioning Refrigerant Monitor, 2. One-click readiness key, 3. On-board monitoring test, 4. Display fault code definition automatically with HELP Button to get Possible Causes

special features

check engine code reader abs scanner srs code reader transmission scanner, Solid Protective Toolcase

special features

batteries

1 Lithium Ion batteries required.

batteries

1 Lithium Ion batteries required. included

batteries

1 Lithium Polymer batteries required.

batteries

model

AD310

model

MP69033

model

FOXWELL

model

Review

Read Review

Review

Available On

Available On

View Deal

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

Simple to use with no batteries required.

Supports all OBDII protocols for broad compatibility.

Compact and lightweight, easy to transport.
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. 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.
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.
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.
Show more
On Amazon

Show more
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

Easy to use for beginners.

Supports multiple car models.

No battery needed; powers from car.
Main highlights

Multi-Functions - It's a practical multi-function OBD2 code reader which helps you determine the cause of the check engine light coming on, quickly read and remove 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. Wide Compatibility - Supports 9 protocols compatible with most 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. It can also be used for some motorcycle OBD2 system diagnosis. (Note: an additional specific adapter cable is needed. not included with this device) 2.8" LCD Display & Multi-language - Designed with a clear 2.8" LCD screen (128 x 64 pixels) - 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. It also supports 6 languages - English,German, Dutch, Spanish, French and Italian. This scanner is enjoyed and highly recommended by the customers worldwide. Compact Design & Easy to Use - It weighs about 12 ounces and measures 6 x 2.75 x 0.9 inches. Equiped with a 2.5 feet long heavy duty cable and the standard 16-PIN OBD connector. 6 buttons for quick operation. The plug and play design makes it user-friendly. Even if you don't have much technical knowledge, you can operate it without any hassle. "Accurate & Fast - Different with other similar scanners, the MP69033 scanner use the brand new ARM micro processor to make sure the ultra high accuracy and fast speed. With the excellent performance of the micro processor, the detailed real-time engine data can be detected and displayed on the screen in seconds. Get codes, fix the problem and turn off the CEL. If you just need a code reader to check your car, it's definitely an affordable and reliable tool.
Show more
On Amazon

Show more
9.6
3

FOXWELL
FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

9.3 worth the money

9.3 Simple to use

9.3 Precision

Why we love it

Extensive vehicle compatibility.

User-friendly interface.

Durable and compact design.
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 using. Available to windows system. NOT support ios and Mac
[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
[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
[Please Note] Dear customer, we have enhanced the outer package to carton box package from July 2024. You can check the correct package in images. 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, we also are responsible for this problem and will provide new replacement or refund
[OBDII Protocols & Compatibility] The NT301 supports standard OBDII protocols like KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. The device may not be compatible with Fiat/ALFA/Lancia, or some models of the French PEUGEOT, Citroen, South Korea Ssangyong, Russia Lada, VAZ, UAZ, GAZ because they are non -standard OBD2 protocols. Kindly check the vehicle compatibility before the purchase
[Home Necessity] Open to global customers. No battery required, 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. This scanner for car only supports to read the fault code of engine system, not support ABS or SRS
[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.
Show more
On Amazon

Show more

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 - May 2025

Our Score

To Amazon

Model

Brand

Reviews

Features

Worth the money

Simple to use

User interface

Precision

Tech Specs

item weight

manufacturer part number

customer reviews

product dimensions

special features

batteries

model

Review

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 Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

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

MOTOPOWER MP69041 OBD2 Code Reader Scanner Tool Oil Maintenance Reset, EPB Reset, Performance Test, Live Data, Pro-Level Design & Lifetime Updates (Professional Diagnostic Tool, Large)

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

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

iCarsoft i906 Compatible for Volvo/Saab OBD2 Diagnostic Scanner Multi-System Engine ABS SRS

ANCEL FX2000-US OBD2 Scanner Diagnostic Tool, ABS SRS Transmission Airbag Car Scanner, Check Engine Car Code Reader, Automotive Diagnostic Tool Lifetime Free Upgrade

Obd Ii Engine System Diagnostic Tools Comparison - May 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

item weight

manufacturer part number

customer reviews

product dimensions

special features

batteries

model

Review

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 Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light

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

MOTOPOWER MP69041 OBD2 Code Reader Scanner Tool Oil Maintenance Reset, EPB Reset, Performance Test, Live Data, Pro-Level Design & Lifetime Updates (Professional Diagnostic Tool, Large)

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

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

iCarsoft i906 Compatible for Volvo/Saab OBD2 Diagnostic Scanner Multi-System Engine ABS SRS

ANCEL FX2000-US OBD2 Scanner Diagnostic Tool, ABS SRS Transmission Airbag Car Scanner, Check Engine Car Code Reader, Automotive Diagnostic Tool Lifetime Free Upgrade

Sign up and get exclusive special deals