With a petrol then your certain to have no DPF probs at all?

Not for much longer. Wait for PPF (petrol particulate filters) to start appearing with future emissions standards.

With a petrol then your certain to have no DPF probs at all?

And with a diesel you'll never get a faulty coil pack

My 2009 CR170 is on nearly 100k of Hackney Carriage miles. I do a lot of short start stop journeys, moving up the rank and not had a problem yet. Although it does get some good runs every week. Don't get me started on any other issues though. Not as solid as they seam.

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Nice to see the other side of the coin chaps. If nothing else it should give someone who is looking to buy some encouragement that a DPF failure isnt the 100% likelihood it appears to be made out to be.

On 37,000 miles over 2 years on a 2010 1.6TDI, mostly short runs interspersed with longer runs at the weekend.

Unaware of any DPF issues

I did comment to the wife yesterday that there must have been a "burn" since over 30 odd sensible miles I was getting 45 mpg instead of the usual 55mpg.

However last night on a 25 mile round trip, back up to the mid 50,s

Edited 26 October, 201213 yr by dieseldogg

2008 PD140 (Scout) now on 84k miles and only had the light on twice but went out quickly when the revs were raised. Mainly 40 mile round trip daily to work which is 50/50 country roads to town, plus the odd motorway trip.

my last 3 cars have had DPF's thats 2 skodas Octavias Vrs PD and CR (current car) and one BMW 325D and they have been as good as gold

Saying that if it goes tits up its getting removed

59 plate CR with 23k on the clock, no issues here.

Fear not the particulate filter of doom

18k In Passat 2.0 CR and 19k in Octavia 1.6 CR no light in either.

17.3k in exactly two years no problems, mix of driving, town crawls and motorway blasts, first variable service on monday quoted £163 by Underwoods Colchester.

No dpf problems with my pd 2.0 lt 140 hp, it has not got dpf fitted .

2010 2.0 CR 170, no probs at all in 28k. Have noticed it doing the occasional regen, but never had the light come on.

My last car was a 1.9 PD 105PS Octy and i ran it for 3 years doing 90k miles on it and i never saw a single fault light on it the whole time.

15k miles in a 140pd Scout often used for short runs and haven't seen the light on yet. I've felt the regen a couple of times though. Been using Uliimate for the last year as I get a 6p a litre discount.

I have had problems with engine oil level increasing though so I'm doing an intermediate oil change. Pretty sure ill have a PDF delete sometime in the future.

Mark

Rising oil level is a major concern - something is getting in there. Has to be either diesel or coolant, either way this is not good. If it is coolant then the coolant will be contaminated with oil and you need a new head gasket. Im not so sure about the problem of diesel getting into the oil, or how likely this is, as I am new to diesels.

Edited 27 October, 201213 yr by Octy0GG

07 vrs 2.0 pd.. 40000 miles on by me in last 2 years and no issues at all. Felt probably 3 regens in all that time .

Good to see that not everyone has problems with DPFs, however the fact that this number of people are reporting no problems, as a response to a post which only invites responses from people with no problems, is not enough to give the DPF a clean bill of health. I do not belive that the massive number of people experiencing problems are making it up or that they all have unusual driving habits, as is sometimes suggested by manufacturers and their dealer network while attempting to defend DPFs.

The fact remains that DPFs are unreliable. All manufacturers know this but would rather devote their energies to denying the problem than to making the technology reliable.

The DPF is the work of the devil.

Good to see that not everyone has problems with DPFs, however the fact that this number of people are reporting no problems, as a response to a post which only invites responses from people with no problems, is not enough to give the DPF a clean bill of health. I do not belive that the massive number of people experiencing problems are making it up or that they all have unusual driving habits, as is sometimes suggested by manufacturers and their dealer network while attempting to defend DPFs.

The fact remains that DPFs are unreliable. All manufacturers know this but would rather devote their energies to denying the problem than to making the technology reliable.

The DPF is the work of the devil.

Rubbish. The majority of noise comes from the minority of owners. My car has no current problems, I'm not the original owner but there is nothing in the service history about DPF problems. I just didn't consider this thread worth the effort.People with no problems, don't troll the internet looking for threads about having no problems to reply to.

Edited 30 October, 201213 yr by Kiwibacon

Not Octavia’s but both of ours have the 170CR, my superb is on around 28K and SWMBO’s TT is just over 30K, neither have had the light DPF on, the TT is generally driven for sub 7 mile journeys and rarely goes over 2K RPM (unless I drive it) and no issues at all.

Good to see that not everyone has problems with DPFs, however the fact that this number of people are reporting no problems, as a response to a post which only invites responses from people with no problems, is not enough to give the DPF a clean bill of health. I do not belive that the massive number of people experiencing problems are making it up or that they all have unusual driving habits, as is sometimes suggested by manufacturers and their dealer network while attempting to defend DPFs.

The fact remains that DPFs are unreliable. All manufacturers know this but would rather devote their energies to denying the problem than to making the technology reliable.

The DPF is the work of the devil.

I know people who have got rid of cars at less than 6 months old due to DPF problems. Dealers seem incapable of sorting the problems.

The DPF WILL eventually block and need replacement at a ridiculous cost. Mazda have designed a new engine that can meet Euro 6 emissions without exhaust after treatment - sounds like the way forward.

Mark999, at what mileage do you expect a DPF to block and need replacement? When used appropriately.

Mark999, at what mileage do you expect a DPF to block and need replacement? When used appropriately.

It really depends on driving style. For fleet use a figure of about 80k was mentioned. With shortish runs I would expect much less.

My colleague who got rid of his dpf equipped Fabia was told by Skoda that a min of 20miles commute was needed.

The way the dpf works is it collects soot which is burnt off to form ash which has a smaller particle size, this is trapped in the PDF and eventually it will fill up and need to be replaced. I have seen some company's offering dpf cleaning, I'm not sure hoe effective this is.

Mark

Rising oil level is a major concern - something is getting in there. Has to be either diesel or coolant, either way this is not good. If it is coolant then the coolant will be contaminated with oil and you need a new head gasket. Im not so sure about the problem of diesel getting into the oil, or how likely this is, as I am new to diesels.

When the dpf does an active regeneration the sequence injects extra diesel to initiate a catalytic reaction to increases the exhaust temperature so that the soot can be burned off. A bit of The extra diesel ends up in the sump hence rising oil levels.

2008 PD140 Remapped DSG DPF Superb MK2, no DPF issues at all in 44K miles. The last year of ownership with me the car was used predominantly around town with just the occasional long run.

I did however have the dreaded pressure sensor failure 4 weeks before I sold it and got the Audi, replaced sensor myself and no issues in the 4 weeks before being sold.

Mark999, where are you getting all this ash from? Diesel fuel doesn't burn to ash, it burns to CO2, H2O and a few related compounds. If it didn't you'll see ash coming out the back of every vehicle. To form ash in a DPF you need to have burn contaminants, high sulphur fuel was an old source, oil additives are another. If you have an oil consumption problem, it will likely cause DPF problems.

I haven't seen the rash of 80k mile DPF failures yet. My scout is on 80,000km, I'll let you know but I'm not expecting any. Despite it's previous owners doing largely city running. There are two audis in my family with DPF sensor replacements. DPF's themselves are fine.

So far it's a lot of scaremongering and no hard data.

BTW, if you have fuel in your sump, it's completely unrelated to DPF burn. Fuel into the sump is a leak somewhere in your fuel system. Even a cold diesel cranking will put diesel out the exhaust rather than past the rings. At operating temps there is no show of hosing diesel out of the combustion bowl, across the piston and down the sides of the bore.