We bought this for my son at Christmas (he's 11). We did worry it would be too complicated as it is a 16+, but its fine - although he is very good at following the instructions! It takes about 3-4 hours solid legoing (is this a word?!) to make. He has made it 3 times now, the first time was a bit disappointing as just as he finished it, the engine fell out of the bottom, and he couldn't get it back in without taking the whole thing apart and starting again. However subsequent building has been very successful. The detail is increadible - lava lamp, a sink, drawers, movable gear stick, foot pedals, fabric curtains and fully operational pop top! (although the VW splitty by rights shouldn't have a pop top!!). Expensive yes, but much much better than any of the other lego sets he has - and he's got most sets!