Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece
and leave with the element ID LEGO asks for, or a link to buy the part.
Duplo Car Formula One with One Stud in Cab, Blue Bottom and Yellow Number 2 PrintBluePart dupupn0013c02pr0001a×1
Duplo Car with 2 x 2 Studs in Bed, 1 Stud in Cab and Yellow BaseBluePart 2218c06×1
Duplo Figure, Early, with Short Parted Hair Light Gray, Black Legs, Light Lime Bow Tie, Glasses PrintBluePart 74511pr0025×1
Duplo HookBluePart 4662Element 466223×1
Green
3 pieces
Duplo Brick 1 x 2 x 2 with Screwdriver and Wrench PrintGreenPart 4066pr0056×1
Duplo Car with 2 x 2 Studs in Bed, 1 Stud in Cab and Yellow BaseGreenPart 2218c06×1
Duplo Container with Recycling Arrows Print and Opening Rear DoorGreenPart 2247c01pr0001×1
Black
1 piece
Duplo Figure, Early, Fire Helmet Red, Black Legs, White Buttons PrintBlackPart 74365pr0002×1
White
1 piece
Duplo Figure, Early, Aviator Hat Red, White Legs, Top with Black Zipper and Racer #2 in Blue Circle PrintWhitePart 74509pr0022×1
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for
the set number and each piece's element ID, the number printed beside the piece in the parts list at the back
of the instructions. This checker lists both.
Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from
older or second-hand sets.
Keep a record
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick
pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.