There are many reasons. Cheap Chinese versions don't work properly on many cars because the makers skimp on many of the more expensive components needed for the full range of OBD protocols. By leaving out key regulating components the cheap versions normally burn out after a few uses.
eBay
ANCEL AD710 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.
eBay
eBay
Save money and enjoy the convenience of the CRP123X. LAUNCH CRP123X OBD2 Scanner ABS SRS Code Reader Check Engine Car Diagnostic Tool. 🚘【Accurate & IntuitiveMulti-System Diagnosis 】 The Launch CRP123X diagnostic tool can pinpoint the problem components when warning lights flash for the transmission, ABS, and SRS airbag check engine.
eBay
ICarsoft CR V3.0: Professional Automotive Diagnostic Scan Tool. With a flexible 10-vehicle model selection and full-system diagnostics, it is the ideal tool for professional automotive technicians. Upgrade your diagnostic capabilities with the iCarsoft CR V3.0?.
eBay
In Excellent condition - Opened Packaging
eBay
What Upgrade We Did on ANCEL V3 Elite?. and upgrade via WiFi, get rid of the USB cable and card reader, no troubles. The Update application screen displays. Support Check Diagnostic Coverage List online.
eBay
Top Reasons to Choose Foxwell GT60 Foxwell GT60 Specifications. Launch, Foxwell, Thinkcar, EUCLIA, Autek, ANCEL, Innova, Autophix, Kzyee, Fcar, Nexas. 1 GT60 BT Main unit. 1 GT60 BT VCI. For Abarth,For Alfa,For Astonmartin,For Audi,For Bentley,For Benz,For Bmw,For Bugatti,For Citroen,For Dacia,For Ferrari,For Fiat,For Fordeu,For Jaguar,For Lamborghini,For Lancia,For Landrover,For Maserati,For Maybach,For Mini,For Opel,For Peugeot,For Porsche,For Renault,For Rolls-Royce,For Saab,For Samsung,For Seat,For Skoda,For Smart,For Sprinter,For Vauxhall,For Volvo,For Vw,For Vw_Cv.
eBay