I am thinking of ordering a vRS CR 170 - probably with DSG. I am a little alarmed to read of the problems owners of 170 PD engines have with DPF across the VAG range.

My motoring is probably 75/25 urban/highway, and although I push the engine hard whenever possible, I am worried that I might have problems. Does any one know if the CR engines are less likely to bung up the DPF than PD engines?

I have the older PD engine with 30K on it and mine is about a 50/50 split urban/highway and the DPF light has only come on once (a really hot day in the middle of standstill traffic in the middle of London).

I just checked the manual (yes I know ) and once I got out of the traffic just ran it at high revs for about 20 minutes and the light went off, no problems since...

I think as long as you have a sensible split between faster and slower driving this should keep you out of trouble with the DPF.

The other thing to bear in mind is that the DPF technology is improving all the time. Compared to the first system which were introduced in 2002 (which needed refilling), the current products are way better.

Currently, there are still people for whom a DPF is unsuitable, but they are becoming fewer. I've got a vRS TDI, and not had any problems at all with regeneration. As I live in Cornwall, probably 80% of my driving is stop/start urban motoring. I also do 2 long motorway journeys a month, and this balance seems to work fine.

There have been a number of ECU updates to help the regeneration process work better, and I think this has got rid of a lot of the problems people were seeing.

With regards to the CR engine, it's a bit too early to tell. I suspect the DPF system is still the same, so can't see why it should be any more problematic than on the PD engine.

It should also be noted that what some people describe as DPF problems are not necessarily a problem with the DPF itself.

I've had the engine and DPF lights on mine on two seperate occasions that required the garage to fix. The first time was related to the wiring and the second was an exhaust pressure sensor.

A lot of the problems I've read about turned out to be faulty sensors (or associated wiring). That said, I think the DPF TDIs seem to work better for people who are able to drive for 15-20 minutes at 2,000rpm at least once a week to burn off the accumulated soot particles (this can be in 3rd or 4th gear), and they don't like constant stop/start driving in heavy traffic (without a regular good run).

Yep, DPF TDIs need a good blast to clear the PDF - mine hates doing the school run & pottering in traffic & will clog up after 3 or 4 days but clears pretty soon at motorway speeds. My dealer actually quizzed me on the type of driving I did before purchase

That said, I think the DPF TDIs seem to work better for people who are able to drive for 15-20 minutes at 2,000rpm at least once a week . .

That's no hardship in a vRS TDi

I've had the engine and DPF warning light on two seperate occasions that required the garage to fix, both times related to the exhaust pressure sensor.

Any update on this as I'm picking mine up Friday?

Anyone with the CR had DPF issues?

Any update on this as I'm picking mine up Friday?

PD or CR engine?

Anyone with the CR had DPF issues?

Don't know, probably still too soon to know.

However, you might like to read through this thread;- http://briskoda.net/octavia-ii/vrs-pd-170-engine-management-software-disk-part/120394/

Of note, since this thread started, there is a 'campaign' no. 26E6 in operation for the 170 PD engine that involves a remap, changing the throttle and power characteristics, plus fitting a modified upgraded exhaust gas pressure sensor for the DPF.

IIRC the CR engine puts out less soot than the TDI anyway, so hopefully it should be less of an issue from the start.

Got a CR - have now done 4200 miles - not had the DPF on once.

And I have driven it rather briskly on occasion

I'm getting the CR.

Just wondering the liability of it!

I'm getting the CR.

Just wondering the liability of it!

Mate... its fantastic. Dont worry, so happy with mine!

ive had my cr vrs for a month now,only drive about five miles each way to work in the week, the engine never really warms up due to the short distance and nature of the journey 30 and 40 mph speed limits so it only gets driven steadily monday to friday ! done 1100 miles now with no problems never seen dpf light not an issue. If anyones routine would show dpf problems i would imagine mine would.

I've had my cr vrs for a month now,only drive about five miles each way to work in the week, the engine never really warms up due to the short distance and nature of the journey 30 and 40 mph speed limits so it only gets driven steadily Monday to Friday ! done 1100 miles now with no problems never seen dpf light not an issue. If anyone's routine would show dpf problems I would imagine mine would.

I agree; this is the sort of driving pattern to try and avoid if you have the PD engine, unless you can give the car a blast at the weekend.

I work in NW London and if ever I have to drive around the area during the day (not often fortunately) I will get the discreet regeneration on the 7 miles I do on the way home before I get to the M'way.

Interestingly; I had the regeneration going earlier this week (could hear the gruff engine note but don't think I got the 1,000rpm tickover) and stopped for fuel before getting on the M'way. I got out of the car and could smell the heat of the exhaust pipe. Went to the back of the car and the tailpipes were exceptionally hot (I would have seriously burnt myself if I had touched them), whereas ordinarily they are only warm to the touch.

Hmmm.

Only time I had dpf problem was when I had a problem which kicked in 'creep home mode' - otherwise it has been OK. If it does happen, it just needs a motorway blast to clear it.

I've got 13k kms on my CR RS and its remapped for the last 4 weeks and no fault lights :-)

Have done 30000 miles in 18 months in my PD vRS and have never had the DPF light come on. Keep in mind we have no motorways hereabouts .... AND we do a lot of short journeys. We do, do a lot of caravanning so maybe the extra effort that requires helps to sort it out.

We collect our new CR vRS on Sunday and don't expect any problems.