Most cars, even BMWs, come lightly swirled/marred at delivery. Even if the dealer put a high quality sealant or wax on the car, it is highly unlikely they did anything about the paint surface. The best thing you can do for the appearance of your car is a light paint correction to remove micro-marring once the paint is fully cured (30 days after production should be good). It will make a big difference in the appearance. You can then apply whatever paint protection you like. After that, only hand wash yourself with microfiber towels and don't ever let the dealer wash the car unless you want new swirls and micro-marring.
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