Piece counts vary widely, from small toddler sets (about 65 pieces) up to large adult model kits (up to 1,872 pieces). Other example counts include 165, 319, 484, 808, 905 and 1,466 pieces.
Instruction formats include printed instructions or an included idea book for some sets, and digital guidance via the LEGO Builder app. Several sets explicitly mention the app, which supports zooming, rotating and step-by-step builds.
Listings cover a wide span of age targets, with examples including 18 Months and Up, 4 Years and Up, 7 Years and Up, 9 Years and Up, 10 Years and Up, and 18 Years and Up.
Common functional elements include working engines and steering, moving pistons and suspension, opening doors (scissor or gull-wing), fold-down/folding wheels or tires, and opening hoods/bonnets or spoiler mechanisms.
