Hi Everyone, please see my complaint and issue with the car.
During disengagement of the accelerator the engine speed decreases too slowly.
The overrun fuel cutoff is not working, the braking effect of the engine is not always present and fuel is being consumed when off the accelerator at a high rate, can be seen in the fuel mpg gauge.
If the accelerator is pressed and the revs climb above 3000rpm when stationary the engine speed sometimes drops too slowly.
There is no relevant error entered in the DME fault code memory.
Apparently BMW say: All your my issues we published with dealerships last year, all in relation to the OPF/PPF Petrol Particular Filter, so my OPF is trying to clear itself of bad pollutants but has to chuck loads of fuel in to it to resolve it. So it needs to have the right conditions etc. I was advised this is normal and the characteristics of all cars now fitted with the OPF/PPF filter, the car is trying to continually clean and remove bad pollutants, with it being colder months this might be producing more than normal, but it should improve. The said all M5's have been removed from track races due to this issue.
So this has not improved and it seems to do this in every mode possible and however hard or softly I drive it, I'm currently getting around 19MPG sat at 70mph on the motorway vs before this happening I was getting around 34mpg. The car is so consistently unpredictable and unsafe if driving hard due to zero engine breaking. I have attached some videos for you all to see, can someone please put me out of my misery and agree this isn't right. The car has done 8000 miles and never missed a beat before this happened, also when this happens the car stops making its backfires completely. The car stops better if I put it into neutral and brake. Has anyone experienced this or know what it is?
Cheers
videos
https://www.dropbox.com/s/mycuml43xx...tside.mp4?dl=0
https://www.dropbox.com/s/mtbtb2lxza...iving.mov?dl=0
https://www.dropbox.com/s/mtbtb2lxza...iving.mov?dl=0