Just to be completely OCD on definitions:

An electromagnet is a device that has a core and coil. The core is fixed. Common examples are the big pickup device on the end of the crane in a scrap yard or the device that holds doors open and lets them close in case of fire.

A solenoid is a coil with a movable core. Common examples are valve actuators or door chimes or the device that pulls the starter shaft in contact with the ring gear.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech