[Polot]

The curb weights quoted are coming straight from BMW themselves (you can see it under the “specifications” tab on their website. Industry standard is weight of full tank of gas, full fluids, and only standard equipment. No options, no passengers. Note for the 2 series in the US that will include the sunroof, as the sunroof is technically standard with the delete an option. Some OEMs include driver (unsure if BMW does)- if so they usually estimate 160-175ish lbs for them (~75-80 kgs)

You can find specific weight information on your car on the driver door jamb compliance label (that also has things like recommended tire pressures listed). If exact curb weight is not listed you can get a rough estimate based on gross weight minus max allowed payload. These labels are required by law and are specific to your VIN and the options included on the vehicle.