Segway Villain SX10 Owner's Manual page 106

VEHICLE IDENTIFICATION NUMBER(VIN)
Record the frame identification code and engine serial code in the spaces provided
for assistance when ordering spare parts from a dealer or for reference in case the
vehicle is stolen.
The frame number is located on the frame tube on the lower right rear side of the
vehicle.
Frame identification code
The engine number is stamped on the engine.
Engine serial code
5-3
5-4