Not anymore. And not with just about any luxury car brand. They simplify their manufacturing buy putting everything in. So you may not have a head unit equipped with satellite radio. But the antennas and such? I would not bet on them not being there. This has been a thing for years. When car toys became popular a few car brands tried to discourage aftermarket electronics and so on. But it costs them too much money in manufacturing costs to keep it diversified over time. Money that could be going to investors. So to do that they diversified their manufacturing. And then streamlined it again. So for instance your base model might not come with all the bells and whistles. But the antennas? The wire harnesses? Those are all the same. It’s like how if they make a model with a sunroof that sunroof has to drain. Models not equipped with the sunroof will not have the glass or the drains. But the drain holes? Yeah they just plug those with a rubber stopper.

That’s why you could upgrade a fair few cars. Add in radios with tape decks and aux jacks and so on. The plugs were all there. So chances are if they sell the model with a radio transceiver installed then all the trim levels have it.