Problems with Opel Mokka: Engine cuts out and how to deactivate start-stop?

For the engine shutting off issue, start by checking the fuel filter for any clogs or dirt, as this can restrict fuel flow and cause the engine to stall. If the filter is clean, it might be worth inspecting the fuel pump and injectors. Regarding the start-stop system, it can often be deactivated via a button on the dashboard or through the vehicle's settings menu. If you're unsure, consult your owner's manual for specific instructions. Let me know how it goes or if you have any further questions!