- This article is about the year. For the set, see 1966 Car Repair Shop.
- The number of countries in which LEGO products were sold reached 42.
- The 1x4x2 lattice fence and 1x4x2 lattice gate bricks were introduced.
- The 1x1 round brick was updated to feature a tapered base, allowing easier disassembling.
Themes introduced or discontinued
- Train was introduced.