Motorized Hogwarts Express

What there is most of

• Plate Round 1 x 1 with Solid Stud · Black×31
• Brick 1 x 2 · Light Bluish Gray×26
• Brick 1 x 1 · Light Bluish Gray×23
• Brick 1 x 2 · Red×21
• Brick 2 x 2 Corner · Dark Bluish Gray×21
• Vehicle Track, Train, 9V Curved · Dark Bluish Gray×16
• Brick 1 x 6 · Red×14
• Brick Round 1 x 1 Open Stud · Black×11
• Brick Sloped 45° 2 x 2 · Sand Green×11
• Tile Special 1 x 2 Grille with Bottom Groove · Dark Bluish Gray×11
• Brick 1 x 1 · Red×10
• Brick Round 1 x 1 Open Stud · Dark Red×10
• Glass for Train Window 1 x 4 x 3 · Trans-Clear×10
• Window 1 x 2 x 3 Pane · White×10
• Window 1 x 4 x 3 Train with All Studs Hollow · Red×10
• Brick 1 x 4 · Dark Bluish Gray×9
• Plate Round 1 x 1 with Solid Stud · Dark Red×9
• Wheel Holder, Train with Wheels [Complete Assembly] · Black×9
• Brick Special 1 x 1 with Headlight · Dark Bluish Gray×8
• Tile 1 x 2 with Groove · Dark Red×8

The twenty most numerous parts, longest bar first. Start a checklist to see all the part types and tick them off as you find them.