VISTA (2015-2019) / VISTA V2 : The serial number is a long string of characters located below the bar code on a sticker on the bottom left of the stroller frame.
VISTA (2014 - earlier) : The serial number is a long string of characters, located on a sticker with a barcode on the bottom right of the stroller frame.
CRUZ (2015) / CRUZ V2 : The serial number is a long string of characters beginning with CRZ, located on a bar-coded sticker on the right-hand side of the stroller frame above the basket.
CRUZ (2014 - earlier) : The serial number is a long string of characters, located on a sticker with a barcode on the bottom right of the stroller frame.
MINU/MINU V2 : The serial number is a series of characters located below the barcode on a label on the back of the stroller frame, between the rear wheels. Undo the ties on the basket and lift the fabric to find the label.