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.
271 pieces in 131 part and color combinations, plus 1 minifigure.
The official piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.
Before you call it missing
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.
Brick Curved 2 x 1 No Studs [1/2 Bow]Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Panel 1 x 1 x 1 CornerRedPart 6231Element 4190219 or 623121×2
Plate 1 x 1RedPart 3024Element 3024211 spare in the box×6
Plate 1 x 2RedPart 3023Element 302321×5
Plate 1 x 2 with White Stripe PrintRedPart 3023pr0011Element 6539345×2
Plate 2 x 2RedPart 3022Element 4613974 or 302221×4
Plate Special 1 x 1 x 2/3 Half Round with Side StudRedPart 3386Element 6494496×4
Plate Special 1 x 2 Rounded with 2 Open StudsRedPart 35480Element 6210269×3
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)RedPart 15573Element 6092565×2
Plate Special 1 x 2, Top Clip [Open O]RedPart 44861Element 6347308×2
Plate Special 3 x 2 with Rounded End, HoleRedPart 3176Element 4188189 or 317621×1
Technic Axle 4RedPart 3705Element 6129995 or 4265797×1
Tile 1 x 1 with GrooveRedPart 3070bElement 3070211 spare in the box×2
Tile Round 1 x 1 QuarterRedPart 25269Element 61703901 spare in the box×2
Tile Round 1 x 2 Half CircleRedPart 1748Element 65165441 spare in the box×1
Tile Special 1 x 1 with Clip with Rounded EdgesRedPart 15712Element 6348058 or 6072998×2
Tile Special Round 2 x 2 with HoleRedPart 15535Element 6102138×1
Dark Bluish Gray
18 pieces
Bracket 1 x 1 - 1 x 1 InvertedDark Bluish GrayPart 36840Element 6225494×2
Brick Curved 2 x 1 No Studs [1/2 Bow]Dark Bluish GrayPart 11477Element 6029948Also in Black×2
Plate 1 x 1Dark Bluish GrayPart 3024Element 42107191 spare in the box×6
Plate 1 x 6Dark Bluish GrayPart 3666Element 4211056×2
Technic Brick 1 x 1 with Axle HoleDark Bluish GrayPart 73230Element 6362259×1
Technic Pin 1/2 with FrictionDark Bluish GrayPart 89678Element 63956351 spare in the box×2
Tile Special Round 1 x 1 with Hollow BarDark Bluish GrayPart 20482Element 62717521 spare in the box×3
Light Bluish Gray
15 pieces
Bracket 1 x 2 - 1 x 2 InvertedLight Bluish GrayPart 99780Element 6004990×4
Plate Round 1 x 1 with Solid StudLight Bluish GrayPart 6141Element 42115251 spare in the box×3
Plate Special 1 x 2 Rounded with 2 Open StudsLight Bluish GrayPart 35480Element 6248890×6
Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedLight Bluish GrayPart 32123bElement 6271165 or 42115731 spare in the box×2
Yellow
9 pieces
Bracket 1 x 2 - 1 x 2 InvertedYellowPart 99780Element 6057458×3
Brick Round 2 x 2, Pin HolesYellowPart 17485Element 6378132 or 6102524×1
Plate 1 x 2YellowPart 3023Element 302324×2
Plate Round 1 x 1 with Open StudYellowPart 85861Element 6168644 or 60508501 spare in the box×2
Tile Round 1 x 1YellowPart 98138Element 6284577 or 60707141 spare in the box×1
White
7 pieces
Plate 1 x 4WhitePart 3710Element 6552108 or 6548266×3
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)WhitePart 15573Element 6550152 or 6051511×1
Technic Axle Pin 3L without Friction Ridges and 2L AxleWhitePart 65249Element 6289797×2
Tile 1 x 1 with GrooveWhitePart 3070bElement 6550138 or 3070011 spare in the box×1
Dark Orange
3 pieces
Plate 1 x 1 x 2/3 with Open StudDark OrangePart 86996Element 6382577×2
Plate Special 2 x 2 with Only 2 studsDark OrangePart 33909Element 6394948×1
Tan
3 pieces
Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)TanPart 71752Element 6330903×1
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×2
Trans-Clear
2 pieces
Minifig Neckwear Bracket with 2 Back StudsTrans-ClearPart 18986Element 6166106 or 6100958×2
Flat Silver
1 piece
Tool Screwdriver and Spanner / WrenchFlat SilverPart 4006Element 6167576×1
Pearl Titanium
1 piece
Game Controller with F1 Steering Wheel Controls PrintPearl TitaniumPart 53118pr0003Element 6472255×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 77242-1[No Color/Any Color]Part 10115308Element 6581075 or 6535288×1
Minifigures
1 figure
Ferrari F1 DriverMinifigure, checked as a whole figure×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.