M47 reliability. First reliability and fuel consumptions. The EGR's need an occasional clean-out if left unrestricted, and the 120d swirl flaps can fail if they get too sooty (from the EGR again). There's 2 versions of this engine which changed early 2001 iirc. No DPF to go wrong, and nice reliable timing chains. The M47 is pretty reliable. __________________. 136hp with rotary injection pump. N47C (03/07) engines are safe as they have rectified the parts which break and lead to timing chain failure. What Are The Common BMW M47 Engine Problems? Common problems with this engine include vacuum leaks, failed injectors, failed turbocharger, problems with the VP44 fuel pump on the older non-common rail model, EGR failures, and crank pulley failures. BUT there are some points that need attention. So if you wish to go for 320D, then make sure it has N47C. I've been told by a BMW dealership it has the M47 engine which pleased me as I was keen to avoid the N47. My first choice was the facelift version, manufactured between 2008-9. All the 5 series 320D suffer from timing chain issues, as they never had N47C. Long and short answer is: yes, they are very reliable. But i read that their N47 engine's timing chain COULD be a ticking bomb, not to mention the swirl flaps. 0 diesel engine? I'm about to buy a 2006 (06 plate) 320d touring (109K miles on it, but full BMWSH). I owned one of these. Not the quickest but pretty reliable with one exception: once the engine exceeds 250 000km, the injection pump is a time The UK M47's are usually very good. . Inlet swirl flaps can be an issue so check they've been removed and go through the service history with a fine-tooth comb. What Are The Common BMW M47 Engine Problems? Common problems with this engine include vacuum leaks, failed injectors, failed turbocharger, problems with the VP44 fuel pump on the older non-common rail model, EGR failures, and crank pulley failures. Is The BMW M47 Engine Reliable? Any major known faults on the M47 (not N47) 2. nosyuepmccmqlqzqvszckhwpdpbsicfojwsjjrlyqhqfesze