One quote I have heard many a time and I stick with it, if you own a diesel and you have a mot due, then just before handing over the keys, give the car a good blast.AlunS said:
By that I mean you should go for a run in the car and for example instead of driving at 30 mph in 4th or 5th gear, do it in second or third gear. High revs and a good run will bring down the emissions.