u/Few_Acanthisitta_234

My 2021 540i x drive at 40mph i tapped the gas a bit it jerked and kinda breaked then jerks again then it said drivetrain malfunction. I stopped the car and turned it back on it drove perfectly fine after that no warnings or codes or anything anyone know what this could be thanks.

Just pick up this 2021 540i x drive fully loaded with 60k miles. What maintenance should I do to keep it reliable? Thanks