Which LEGO Star Wars set, released in 2007, was the theme’s largest by piece count at release?

The 2007 LEGO Star Wars Millennium Falcon (10179) was the theme’s largest set by piece count at release.

Set 10179 belongs to LEGO’s Ultimate Collector Series, a range designed for older builders and collectors rather than ordinary play. Its model represents the heavily modified YT-1300 freighter flown by Han Solo and Chewbacca in the original trilogy. The set contained 5,197 pieces, making it an especially ambitious Star Wars building set for its time.

The set is often confused with later LEGO Millennium Falcon releases. LEGO issued several smaller play-focused versions, while the 2017 Ultimate Collector Series Millennium Falcon became considerably larger, with 7,541 pieces. Thus, the 2007 set is the relevant answer when the question specifies its release period and status at release.

Its size, display-oriented construction, minifigures, and high original price helped establish large Star Wars sets as major collector merchandise rather than only children’s toys.