TL;DR from this thread: Most folks recommend reliable name brands like Mustart or getting a solid adapter setup for the ID.4. Just a heads up though.....
Hey! For a 2012 S550, don't overthink it. I've tried many over the years. Mobil 1's good, but honestly, a quality synthetic like SuperT...
Been using Seat Armour since '16! Still look new. Around $150. Fantastic investment!
Hey! For safety, skip sketchy off-brands. I've been happy with my Tesla Mobile Connector (Gen 2). Not the fastest, but reliable and UL certified....