BMW 540i 2018 Engine Shaking/Stalling

Hi Everyone,

I've had my check engine light on my 2 month old 540i with 2500 miles on for
the past 4-5 days. I took it to AutoZone to get the code read.. The device pulls
an error but doesn't tell us what the code is. We also tried clearing it with the
device but that didn't work. Taking it to BMW Service on Monday to see what's
up with it.

The car starts to shake/stall when I go into reverse and also at low speeds or
at a stop light. Any ideas on what this can be?

I also just thought about the MPG I'm getting which seems to be a lot lower
than what was advertised.. I'm getting an average of 19 MPG when advertised
is 21/30. I have EcoPro on most of the time and don't accelerate quickly...
Should I be concerned about this difference?

Any ideas on what could be causing the engine light or shaking? Just want to
know what questions to ask when I go see the advisor Monday.