Hi i am  now looking at a Vrs Cr, Just after some advise in regards to potential issues caused by short runs. I am aware that the cr does not suffer with the horrendous issues that the old PD suffered with the DPF but? the car will mostly do around 20 miles round trip for work with motorway runs at least once a week around 65 miles. will it suffer any DPF  issues with this use? i know you will say get a petrol but i love diesels and always had them. thankyou in advance.

I have a 2008 CR vRS which hasn't yet done 40k miles, and has done quite a number of shortish journeys

It has also been remapped

The only issue I have had is the faulty diesel particulate sensor which was replaced recently

It will be very difficult for anyone to categorically say whether you will or won't have a problem as there are so many variables in the equation

I have a 2012 CR. Very often it does trips under 2 miles and has a run probably once a week of 25 miles and in 1 year of ownership no issues. Obviolusly MPG is down to 40 to the gallon but thats about it.

You'll be fine. All I probably would say is just try and be concious when the car is undertaking a passive regen (revs rise to 1k at idle and once hot enough the cooling fans come on), do your best to drive the car until its complete. They normally only take a few minutes to finish. Isnt a train smash if you do disrupt, just try not to disrupt one acter the other after the other as thats when the problems begin.

As above nobody can give you a definite answer, much in the same way that noboby could guarentee you wouldn't have any issues with the tsi, but in general your driving pattern would suggest you should not have any problems with the dpf itself as your journeys would mean you reach normal operating temperature for long enough for it to both burn off soot through the passive regen process as well as complete its active regen cycle which happens every 600 ish miles or when the soot reaches a pre determined level (whichever comes first). Mines 2 1/2 years old and done 12.5k miles and I've had no problems at all and my typical normal journeys are less than yours. You will get more active regens during the winter months but even with my trips I vary rarely notice them happen-it just gets on with it while you do your normal driving. So far I've only interupted a very small number of active regens which result in the fans going flat out until its cooled everything down, but in each case it finished the cycle next time I went on a run where it got up to working temperature.

edit: forgot to add the active regen doesn't bring any lights up on the dash, it heats the dpf up by injecting more fuel post combustion to burn the soot off and typically all you'll notice is the revs rise to 1000 ish rpm on tickover while it does this and your fuel economy will drop. From what I've experienced it normally completes the cycle in around 15 minutes. If you get a dpf light on the dash thats the driver assist stage so try and complete the cycle until it goes out-I normally do this on the active one too if I can.

Thank you for the replies you have certainly put my mind at rest, one thing I would say is I won't be doing twenty miles in total to work its 9.5 miles either way, still ok?

As you can tell I tend to worry a bit! :-) still I'm in the right place for advise.

I personally wouldn't want to run mine on only 9.5 mile trips daily. Your choice though.

I too wouldn't be happy about doing less than 10 miles each way with a DPF.

 

However the CR170 engine is mated very well with it's DPF and seems to cope very well.

 

If your heart is set on a diesel then go for it.

My car does less than 10 miles a day normally, had it since new June 2008. Never had any dpf problems.