ANCEL BD310 Bluetooth OBD2 Scanner, 2-in-1 Car Diagnostic Scan Tool Reader with App, Battery Test, Trip Analysis, Performance Test, for iPhone Android, All 1996+ Vehicles Review: "For the average quasi-car guy this is the sweet spot. I tried a highly rated dongle and downloaded and tried 3 diff" Link

【2-IN-1 WIRED & BLUETOOTH OBD2 SCANNER】Get the reliability of a wired code reader and the convenience of Bluetooth app diagnostics in one compact tool. The ANCEL BD310 lets you read and clear check engine codes directly on the device or access advanced app features from your phone, including battery monitoring, smart driving insights, and live vehicle data. Designed for DIY drivers who want more than a basic scanner without stepping up to a professional tablet
【UNDERSTAND CHECK ENGINE LIGHTS BEFORE PAYING FOR REPAIRS】Stop guessing why your warning light is on. Read engine trouble codes, view plain-English DTC explanations, and use built-in Google Search support to learn possible causes and fixes before visiting a repair shop. Clear codes after repairs, verify the issue is resolved, and avoid unnecessary diagnostic fees and surprise repair costs
【MONITOR BATTERY HEALTH & VEHICLE PERFORMANCE】Track battery voltage in real time and spot charging system problems before they leave you stranded. The free app also includes battery testing, performance testing, and trip analysis tools that help you monitor driving behavior, coolant temperature, acceleration, braking, and overall vehicle health over time
【PASS SMOG CHECKS & EMISSIONS TESTS WITH CONFIDENCE】Run I/M Readiness checks at home before inspection day and avoid wasted trips to the testing station. Verify emissions monitor status, confirm O₂ sensor readiness, detect EVAP-related issues, and check whether your vehicle is ready for state emissions testing. A practical OBD2 scanner for routine maintenance, road trips, and everyday vehicle health checks
【SMART HUD DISPLAY & LIVE DRIVING DATA】Use HUD mode to display real-time speed, RPM, voltage, and other key vehicle data directly on your windshield or phone screen while driving. Customize dashboard layouts, monitor live performance data, and keep important vehicle information within view for a smarter and more connected driving experience
【FULL OBD2 DIAGNOSTICS WITH FREE LIFETIME APP UPDATES】Supports all 10 OBDII modes, including live data, freeze-frame, EVAP tests, O₂ sensor tests, I/M readiness, and vehicle information. Compatible with most 1996+ OBDII cars, SUVs, and light trucks. Includes free lifetime app updates with no subscriptions, unlock fees, or recurring charges. Note: ABS, SRS, and transmission code clearing are not supported