
Have been considering a 98/99 - 05 ish year TDI ( I guess this is referred to as mk4?), Jetta, Passat, Golf, not too picky, either of those will do fine.
From reading it sounds like these like to have an airbag and CEL light come on for mysterious/finicky reasons. Other than that, any things I need to look out for? Little differences between the years where a x year would be better or worse than y year? Certain items that mean "Stay the freak away from", or "this diesel is about to explode",

For those that don't know me, I'm familiar with auto's in general, just not this one in particular so no need to suggest things like, "Check that it's got enough headlight fluid" or "Request that they repack the muffler bearings".

If it matters; not looking to mod/tweak/pimp/slam/stance/rice/stretch/poke or otherwise adjust the vehicle from stock. Just need it to reliably get me from point a to b without fail. It's going to be the wife's daily so… no go fast bits on this one.