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.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Plate 1 x 2Yellow ×2Trans-Yellow ×5Trans-Yellow is see-through: hold the piece up to a light.
Plate 2 x 2Black ×3Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Sports Roller SkateFlat SilverPart 11253Element 62154471 spare in the box×4
Bag / Messenger Pouch with Long StrapPearl GoldPart 61976Element 6410498×4
Plates Wedged
8 pieces
Wedge Plate 2 x 2 Cut CornerDark RedPart 26601Element 6210310×2
Wedge Plate 3 x 2 LeftDark RedPart 43723Element 6267490 or 4224297×1
Wedge Plate 3 x 2 RightDark RedPart 43722Element 6267492 or 4224295×1
Wedge Plate 6 x 3 LeftDark RedPart 54384Element 4539069 or 4528043×1
Wedge Plate 6 x 3 RightDark RedPart 54383Element 4539068 or 4528041×1
Wedge Plate 2 x 4 27° LeftMetallic SilverPart 65429Element 6412273×1
Wedge Plate 2 x 4 27° RightMetallic SilverPart 65426Element 6412268×1
Tiles Round and Curved
6 pieces
Tile Round 1 x 1 QuarterDark RedPart 25269Element 63118901 spare in the box×2
Tile 4 x 4 Curved, MacaroniLight Bluish GrayPart 27507Element 6458164 or 6163989×4
Technic Bricks
5 pieces
Technic Brick 4 x 4 with 2 x 2 OpeningBlackPart 32324Element 6222427 or 4226981×1
Technic Brick 1 x 2 [1 Pin Hole]RedPart 3700Element 370021×4
Transportation - Land
4 pieces
Spoiler 2 x 4 with Handle [Plain]Dark RedPart 98834Element 6219659×1
Wheel Arch, Curved Wedge 4 x 3 with 2 x 2 Opening and 4 StudsLight Bluish GrayPart 47755Element 6381293 or 6005667×1
Wheel Arch, Mudguard 4 x 2 1/2 x 2 with 2 x 2 PlateLight Bluish GrayPart 50745Element 6377932×2
Hinges, Arms and Turntables
2 pieces
Hinge Brick 1 x 2 BaseBlackPart 3937Element 393726×1
Hinge Brick 2 x 2 Top Plate ThinLight Bluish GrayPart 6134Element 4211881×1
Technic Axles
2 pieces
Technic Axle 4BlackPart 3705Element 370526×2
Technic Beams
2 pieces
Technic Beam 1 x 11 ThickWhitePart 32525Element 6028103 or 4296265×2
Bricks Round and Cones
1 piece
Brick Round 2 x 2 with Axle HoleTrans-Bright GreenPart 3941Element 6549515 or 6514287×1
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.