What age is each LEGO set aimed at?

LEGO prints an age guide on every box. In this roundup the Classic brick boxes and City construction sets skew younger (roughly 4-6), themed City vehicle sets land around 6-7, and Creator 3-in-1 and Technic sets are pitched at 8-12. Community reviewers note the Technic Off-Road Buggy is a common 'first Technic' build for kids stepping up in difficulty.