Best Engine Diagnostic Tools of 2025

Our top 3 picks

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  TOPDON OBD2 Scanner ArtiDiag500, Engine Transmission ABS SRS Diagnostic Tool, SAS Calibration/Throttle Reset/Oil Reset, AutoVIN, Car Battery Voltage Test, Wi-Fi Free Update

  The TOPDON ArtiDiag500 OBD2 Scanner is a versatile diagnostic tool designed for car enthusiasts and mechanics. It supports over 57 car brands and 10,000+ models, making it a reliable choice for various vehicles. This scanner offers comprehensive diagnostics for engine, transmission, ABS, and SRS systems, ensuring accurate fault detection and resolution. The one-click AutoVIN feature streamlines the diagnostic process by automatically identifying the car's make, model, and year, saving time and effort. Users can enjoy free lifetime updates via WiFi, keeping the scanner up-to-date with the latest features and improvements. The 5.0-inch 720P touchscreen provides a user-friendly interface, praised for its ease of use. Additionally, the scanner includes special functions like Throttle Adaptation, Oil Reset, and SAS Calibration, enhancing its utility for pre-mechanic checks. With multilingual support and a real-time battery voltage monitor, the ArtiDiag500 is a practical, efficient tool for maintaining vehicle performance and longevity.
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  XTOOL AD20 Pro OBD2 Scanner, Wireless Full System OBD2 Code Reader Car Diagnostic Tool, Free Update, Oil Reset, Smog Check, Performance Test, Voltage Test, Engine Fault Code Reader for iOS & Android

  The XTOOL AD20 Pro OBD2 Code Reader is a versatile and user-friendly car diagnostic scanner ideal for both DIY enthusiasts and professional mechanics. Its fast Bluetooth 5.0 connectivity allows seamless pairing with iOS and Android devices, making it easy to use with the Advancer AD20 app. The scanner offers comprehensive diagnostics, including full system scans, oil resets, and complete OBD2 test modes, ensuring thorough vehicle analysis. Users appreciate its ability to read and clear codes, track car performance, and provide fault code definitions, enhancing both convenience and safety. With lifetime free updates and 24/7 tech support, the AD20 Pro is a reliable tool for maintaining vehicle health and readiness for MOT tests. It's an excellent gift for car owners, offering practical applications and peace of mind in vehicle maintenance.
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  MOTOPOWER MP69033 OBD2 Scanner Universal Car Engine Fault Code Reader, CAN Diagnostic Scan Tool for All OBD II Protocol Cars

  The MOTOPOWER MP69033 OBD2 Scanner is a versatile and reliable tool designed for car owners and mechanics alike. It features a comprehensive diagnostic capability with a built-in OBD2 DTC lookup library, allowing users to determine engine light causes, read and erase codes, and access real-time data. Its wide compatibility supports most vehicles from 1996 onwards, including US-based, EU-based, and Asian models. The scanner's user-friendly design includes a clear LCD screen with adjustable contrast, making it easy to read diagnostic information. With a 2.5-foot cable and a compact, durable design, this tool is both portable and practical. It requires no batteries, drawing power directly from the vehicle, which adds to its convenience. Although it does not support ABS or airbag codes, it excels in providing essential engine diagnostics, making it a valuable addition to any car maintenance toolkit. Ideal for non-technical users, this scanner combines ease of use with comprehensive functionality, ensuring you can address engine issues efficiently and effectively.