Where is the engine serial number located on a BMW 320i?

[LeReagan]

BMW 320i engine serial number is located on the nameplate on the left side of the engine compartment wall. More information is as follows: Engine number cannot be altered: The engine number cannot be arbitrarily changed or replaced. If the engine number or vehicle identification number becomes illegible or damaged due to wear, corrosion, accidents, etc., an application for record filing can be made to the vehicle management office at the registration location. Composition of the engine serial number: The digits on the engine serial number represent the engine number, which consists of 4 parts: the prefix includes product series code, generation symbol, and regional/enterprise code; the middle section consists of cylinder count symbol, cylinder arrangement symbol, stroke symbol and bore diameter symbol; the rear section includes structural feature symbol and usage feature symbol; the suffix is a distinguishing symbol - when differentiation is required for improved versions within the same series, the manufacturer selects appropriate symbols, with the rear section and suffix potentially separated by "-".