Airfix's tank kits haven't aged well in many instances which isn't surprising when you consider that they date from the 1960's and 1970's. Many of their aeroplane kits are also of a similar vintage but they seem to have aged better - I suspect because they are usually made from fewer, and larger, parts.
This Panzer IV kit is one kit that still makes a nice and accurate model and doesn't have any of a the glaring errors or omissions of some of their other tanks. Fit of the parts is also still pretty good although not, obviously, as precise as more modern kits by Revell and Dragon.
Another reviewer below states her son's frustration with this kit and that is understandable. There are some very small parts included here and it takes a bit of skill to get to grips with Airfix's rubbery vinyl tracks. I personally wouldn't recommend this kit to a very young or inexperienced modeller.