The chassis number consists of ten digits. The first two numbers indicate the model type, and the third number gives the model year. For example, a 2 as the third digit means that the car was produced during the 1972 model year run.
The chassis number is stamped on a metal plate. On Type 1, 3, and 4 models, the plate is located in the luggage compartment, on the frame tunnel under the back seat, and on the driver's side of the instrument panel (visible through the windshield). On Type 2 models, the plate is located behind the front passenger's seat, on the left-hand engine cover plate, and on top of the driver's side of the instrument panel.