[Joe-BMW33]

These cars do not "consume coolant" as the dealer might tell you. You have a leak, a small leak that will eventually rear it's ugly head. Most likely the leak is dripping onto the valley pan and burning off. So nothing on the ground and nothing to see in the engine bay.

I was adding a pinch of coolant every other month. Dealer said normal. Then the leak increased to the point where I could smell the burn off coming through my interior vents. Nose burning and eye watering. My turbo coolant lines were leaking and they were replaced with the updated stainless ones as this is a known issue. I have not had to add coolant since, problem solved.

Tell the dealer you have the same smell even if you don't. This will at least make them look hard for coolant burn off powder on the valley pan or other places.