Bluetooth V2.1 Mini Elm327 obd2 scanner OBD for Smart Fortwo Forfour453 451 450 - AliExpress
On-Board Diagnostics - mk7
ChipPower OBD v4 Chip Tuning Box Plug&Drive compatible with Smart Fortwo Mk2 II 451 1.0 Turbo/Brabus 2007-2015 Tuningbox Petrol ChipBox Performance More Power Less Consumption : Amazon.co.uk: Automotive