Hi everyone, Can I first take the opportunity to thank all you guys who are very, very clued up about Mercedes! I have spent a lot of time reading and researching on this forum before I went out and bought myself a Y-reg (2000) E320 estate (diesel). I have only owned the car for two weeks and it is a very good car. The problem that I am having is that when the car is running idle (traffic lights etc), the car judders/shakes. I am based in Birmingham and after getting recommendations (from you guys) I have been to WDM Cars Ltd. I have used them before and they are quite good. The gentleman ran diagnostics and could not find the fault as to why the car was juddering. Although he did identify that one of the glow plugs did need replacing (I knew they had to be replaced because when I bought the car the light was on, but thankfully it is just the one). WDM said it could be the injector, but he advised me to take the car for a proper run on the motorway (I drove 100 miles last night) and to see if this fixes the problem. It has not. WDM dismissed the torque convertor, because this is a problem with later models (2002 or 2004 onwards I think). So what do you guys think? Will it be an expensive fix? Should I stop driving the car until the problem is solved? I will try to get to the garage today/tomorrow if they have any appointments, otherwise I will get it booked in for Monday. Thanks in advance.