They say it's because of audio quality, but it isn't that simple:
It's easy to take for granted amenities in our cars like air conditioning and the radio, which have been standard equipment for longer than many of us have been alive. But the rise of electric vehicles is giving the auto industry the chance to rethink norms and jettison ideas that belong in the past. One of those ideas may be AM radios, which some carmakers say they won't include on future EVs, and which are already unavailable on a few. Car companies blame interference from EVs' drivetrains, but the answer isn't that simple—not by a long shot.
[....] EVs from Audi, BMW, Porsche, Tesla, and Volvo are sold without AM radios, and it's been that way for years.
[....] So are highly complex EVs incompatible with one of the oldest, simplest electronics? BMW and Volvo told me it was due to audio quality problems rooted in electromagnetic interference, of which EVs' drivetrains produce a significant amount. Cars' engines and other complex electronics have always made EM interference, but low-wattage static is relatively easy to shield against. It's not as simple with EVs that may pull hundreds of watts from their batteries
[....] But it's hard to take them at their word when EVs are built with AM radios and in no small numbers. Detroit's Three—Ford, General Motors, and Stellantis—have produced or currently make EVs that include AM radio
Can radio be an addiction? I suppose it depends on the frequency.
Will the FCC cry foul if there is interference? Only if the batter hinders the catcher after a third strike.
(Score: 4, Informative) by corey on Sunday July 10 2022, @10:42PM
They’re probably not wrong. It is not easy to control the EMC of high current switching electronics. The trams in Melbourne and their power lines always screw with my AM radio reception. But there are standards I’m sure they need to meet (eg. EN 61000), but I’m not sure that even meeting that would mitigate radio interference at close proximity.
I think it’sa big part saving costs and letting go of old technology, as they did with tape decks and cd stackers.