GeneS

Is the Mercedes WiFi hot spot worth getting in 2022 glc300?
Or is the mobil magenta in a dongle a better choice?

DanD.

I would go with dongle. Don't like to locked in.
With dongle you can take it to another car and all gadgets will work no changes required.
Only concern with dongle, can it drain the battery over night, fee days or week. Im not sure if car kills power in the OBD port.