Hello, perhaps someone might be able to advise? I have just been given a old Audi A6 2.5 TDI V6 (high mileage but immaculate), but it has the Glow Plug warning light come on shortly after starting and stay on. Apparently it has done this for a while and does not seem to effect performance. However on reading forums on the issue it seems the vehicle could go into limp mode any time (not nice on a motorway!). Whilst it is a lovely car to drive I don't want to get into expensive repairs so am I best to just sell it on and if so presumably I still need to get it diagnosed as no one will buy it with this light on (does this model have an EMS or does the Glow Plug light sort of do this job covering all sorts of possible issues?). On the other hand maybe it's worth spending a few hundred pounds to drive what is a lovely car!!!