DPF issues, car going into limp mode.
Discussion
eybic said:
It depends what you mean by "some years back"?
DPF's have been around since 2009 ish and problems known about for around that time too so it's certainly not new news.
My point is that we have gone backwards in terms of diesel reliability. Trying to meet stringent emissions levels set by governments has been impossible for the manufacturers to achieve and therefore they have been making unreliable cars or cheating, rather than standing up and saying it is not possible.DPF's have been around since 2009 ish and problems known about for around that time too so it's certainly not new news.
Emeye said:
My point is that we have gone backwards in terms of diesel reliability. Trying to meet stringent emissions levels set by governments has been impossible for the manufacturers to achieve and therefore they have been making unreliable cars or cheating, rather than standing up and saying it is not possible.
Correct to a point.It's the clever dick EU that's been expecting miracles. They eventually managed to f
k it up.Cobnapint said:
Jazzy Jag said:
On a depressing note, I was in a meeting last week when the term " Petrol Particulate Filter" was banded about.
Blimey, the motorways are going to be busy at the weekends....http://www.autoexpress.co.uk/volkswagen/tiguan/965...
Just thought I would add some closure to this thread.
My car went into limp home mode again Weds evening without warning so I took the car back to Bolton on Thursday morning and after a long chat with the DP and Sales Manager they have agreed to take the car back and are issuing a full refund. I was offered a build slot on a 2.0 for delivery in December but I'm either going to opt for a GTS or probably the new Cayenne neither of which can be delivered any time soon. As an interim solution and because they don't have any suitable vehicles they can loan me long term I have agreed to purchase the next Macan 2.0 that arrives in group and when the car I order (Macan or Cayenne) arrives Porsche will purchase the Macan 2.0 at the price I paid for it which seems like a good deal to me.
I have say Bolton have been absolutely superb throughout. They have done everything they could to rectify the issue and say Porsche are working on a solution. I'm not convinced there is one, this is a big problem that it isn't going away. I consider myself fortunate that the problem surfaced within the first 6 months so Sale of Goods Act was still applicable. Not sure what Porsche's stance would be if I had had the issue outside of this window.
My car went into limp home mode again Weds evening without warning so I took the car back to Bolton on Thursday morning and after a long chat with the DP and Sales Manager they have agreed to take the car back and are issuing a full refund. I was offered a build slot on a 2.0 for delivery in December but I'm either going to opt for a GTS or probably the new Cayenne neither of which can be delivered any time soon. As an interim solution and because they don't have any suitable vehicles they can loan me long term I have agreed to purchase the next Macan 2.0 that arrives in group and when the car I order (Macan or Cayenne) arrives Porsche will purchase the Macan 2.0 at the price I paid for it which seems like a good deal to me.
I have say Bolton have been absolutely superb throughout. They have done everything they could to rectify the issue and say Porsche are working on a solution. I'm not convinced there is one, this is a big problem that it isn't going away. I consider myself fortunate that the problem surfaced within the first 6 months so Sale of Goods Act was still applicable. Not sure what Porsche's stance would be if I had had the issue outside of this window.
Edited by moonigan on Sunday 22 October 16:01
Interesting read. As part of my due diligence, I've just found this thread and pick up a Macan S Diesel tomorrow!
Salesman did point out that at only 6k pa there may be DPF issues, but hardly any of my journeys are in stop/start traffic, mostly 30 mile each way motorway and cross country runs. We haven't had any problems with our Q5 in 45k miles, so I'm not unduly worried, but will keep an eye out for the warning light!
Salesman did point out that at only 6k pa there may be DPF issues, but hardly any of my journeys are in stop/start traffic, mostly 30 mile each way motorway and cross country runs. We haven't had any problems with our Q5 in 45k miles, so I'm not unduly worried, but will keep an eye out for the warning light!
moonigan said:
Just thought I would add some closure to this thread.
My car went into limp home mode again Weds evening without warning so I took the car back to Bolton on Thursday morning and after a long chat with the DP and Sales Manager they have agreed to take the car back and are issuing a full refund. I was offered a build slot on a 2.0 for delivery in December but I'm either going to opt for a GTS or probably the new Cayenne neither of which can be delivered any time soon. As an interim solution and because they don't have any suitable vehicles they can loan me long term I have agreed to purchase the next Macan 2.0 that arrives in group and when the car I order (Macan or Cayenne) arrives Porsche will purchase the Macan 2.0 at the price I paid for it which seems like a good deal to me.
I have say Bolton have been absolutely superb throughout. They have done everything they could to rectify the issue and say Porsche are working on a solution. I'm not convinced there is one, this is a big problem that it isn't going away. I consider myself fortunate that the problem surfaced within the first 6 months so Sale of Goods Act was still applicable. Not sure what Porsche's stance would be if I had had the issue outside of this window.
Only just seen this OP. That is one hell of a result - good on Bolton OPC!My car went into limp home mode again Weds evening without warning so I took the car back to Bolton on Thursday morning and after a long chat with the DP and Sales Manager they have agreed to take the car back and are issuing a full refund. I was offered a build slot on a 2.0 for delivery in December but I'm either going to opt for a GTS or probably the new Cayenne neither of which can be delivered any time soon. As an interim solution and because they don't have any suitable vehicles they can loan me long term I have agreed to purchase the next Macan 2.0 that arrives in group and when the car I order (Macan or Cayenne) arrives Porsche will purchase the Macan 2.0 at the price I paid for it which seems like a good deal to me.
I have say Bolton have been absolutely superb throughout. They have done everything they could to rectify the issue and say Porsche are working on a solution. I'm not convinced there is one, this is a big problem that it isn't going away. I consider myself fortunate that the problem surfaced within the first 6 months so Sale of Goods Act was still applicable. Not sure what Porsche's stance would be if I had had the issue outside of this window.
Mr2Mike said:
rkwm1 said:
Regardless of driving style and distances covered this should not be happening!
Wrong, it's well known that driving style and distances have a profound effect on the longevity of a DPF, and this is for all manufacturers, not just Porsche.Fish said:
Basically you have the wrong car for your needs. You need a petrol.
He is right. And you are being unreasonable in expecting the diesel to not clog up on lots of small journeys with the wife driving like Miss Daisy. (No offence to the wife, or Miss Daisy). The only time diesels make any sense is when you are doing super high mileage on long continuous trips. As in you are a taxi driver, or a delivery driver or a sales rep. I had a 530d for a while: I was frequently driving between Amsterdam and London and for that use the car fit well. But for a 5 mile round trip to the supermarket or an office the car would be totally inappropriate.Recommend you sell the Turbo Diesel ASAP before you bugger up the engine any more. Give someone else a chance to enjoy the car that will use it more / more appropriately. Meanwhile for your wife's usage pattern - and if you care about emissions / polar bears / bunny rabbits - consider getting a pure electric car or a petrol / electric hybrid. Electric cars really come into their own for short journeys like the ones your wife has been doing. If you need the flexibility of range for occasional much longer trips then go for a hybrid.
Just picked up on this thread as I am having the same issues with my wifes Macan.
I bloody hate diesel and would have much preferred a petrol but at the time I couldn't get a petrol Macan due to demand, and nobody said to me "do you do short journeys" when I bought it, nor does it say anywhere "only suitable for long trips."
Yes her driving tends to be short local trips, however this never happened with the XC90, Discovery, X5 or RR Sport that have come before it.
They clearly have an issue and it's f%&£ing annoying and utterly ste.
It's like going back to the 1940s...oh have you greased the trunnions this week...grrrrr
I bloody hate diesel and would have much preferred a petrol but at the time I couldn't get a petrol Macan due to demand, and nobody said to me "do you do short journeys" when I bought it, nor does it say anywhere "only suitable for long trips."
Yes her driving tends to be short local trips, however this never happened with the XC90, Discovery, X5 or RR Sport that have come before it.
They clearly have an issue and it's f%&£ing annoying and utterly s
te.It's like going back to the 1940s...oh have you greased the trunnions this week...grrrrr
smudger911 said:
Land Rover have similar issues with oil dilution on their new Ingenium engines. Rather than the prescribed 20,000 miles service interval ours is having an oil change every 6,000 miles.... Quite shocking and will be the last diesel we run.
What’s causing the dilution? Terrible and why my diesel will be replaced with petrol in April.smudger911 said:
garyhun said:
What’s causing the dilution? Terrible and why my diesel will be replaced with petrol in April.
DPF re-gen not fully completing, diesel being sucked into the engine and oil dilution occurring. garyhun said:
Thanks. Never realised that an incomplete re-gen would do that. I’ve been lucky with my diesel (bmw) but it’s put me completely.
Having had a google on the subject, it seems the Euro6 engines are most commonly affected - LR, Ford, Audi, FIATEither way there seems a ground-swell starting that diesels are bad, dirty blah blah. I'm sure those elected people we love and trust will begin to tax the living daylights our of all diesels very soon.
bertie said:
smudger911 said:
DPF re-gen not fully completing, diesel being sucked into the engine and oil dilution occurring.
How does one know when it's complete?I've just taken the Macan for a right royal thrash for 25 minutes on a dual carriageway but not idea if that's enough.
There are two tales of Macans going into limp mode, due to only doing local short journeys,
in the Porsche forum. Best look up the specifics for your car or talk to your OPC.
garyhun said:
Supposedly it’s not a thrash that you want but a steady 60-70 for about 30 minuets.
There are two tales of Macans going into limp mode, due to only doing local short journeys,
in the Porsche forum. Best look up the specifics for your car or talk to your OPC.
That's what it's had, but I varied between 65 and higher all in 4th gear so it was revving......well as much as a crappy diesel will rev.There are two tales of Macans going into limp mode, due to only doing local short journeys,
in the Porsche forum. Best look up the specifics for your car or talk to your OPC.
I'll see what it says next time I get in at lunch, if not I'm swapping the bloody thing for something petrol!!
This may have been covered before, but for the Diesel Particulate Filter to work properly it has to be really hot. The particles then burn off which in combination with the AdBlue (urea) reduce massively the amount coming out the exhaust, often to less than that of an equivalent petrol engine, if Euro-6 compliant.
The problem with the short journeys is that the filter never gets hot enough to burn off the particles and then clogs up, hence the need to give it a good run at higher revs to get the DPF hot enough to re-generate and clear itself out.
The problem with petrol SUVs is that you're often lucky to get mid-20s economy on a run (and often much less) and a Diesel will get you 35-45mpg in many cases, hence why everyone wanted a Diesel in the first place. The rock and a hard place scenario...
The problem with the short journeys is that the filter never gets hot enough to burn off the particles and then clogs up, hence the need to give it a good run at higher revs to get the DPF hot enough to re-generate and clear itself out.
The problem with petrol SUVs is that you're often lucky to get mid-20s economy on a run (and often much less) and a Diesel will get you 35-45mpg in many cases, hence why everyone wanted a Diesel in the first place. The rock and a hard place scenario...
OhThatHurtAbit said:
This may have been covered before, but for the Diesel Particulate Filter to work properly it has to be really hot. The particles then burn off which in combination with the AdBlue (urea) reduce massively the amount coming out the exhaust, often to less than that of an equivalent petrol engine, if Euro-6 compliant.
The problem with the short journeys is that the filter never gets hot enough to burn off the particles and then clogs up, hence the need to give it a good run at higher revs to get the DPF hot enough to re-generate and clear itself out.
The problem with petrol SUVs is that you're often lucky to get mid-20s economy on a run (and often much less) and a Diesel will get you 35-45mpg in many cases, hence why everyone wanted a Diesel in the first place. The rock and a hard place scenario...
I'm not fussed about economy, if I wanted that I'd go petrol hybrid like an X5 40E and do most of the wifes journeys would be on electric.The problem with the short journeys is that the filter never gets hot enough to burn off the particles and then clogs up, hence the need to give it a good run at higher revs to get the DPF hot enough to re-generate and clear itself out.
The problem with petrol SUVs is that you're often lucky to get mid-20s economy on a run (and often much less) and a Diesel will get you 35-45mpg in many cases, hence why everyone wanted a Diesel in the first place. The rock and a hard place scenario...
If you want to talk economy, I ran a Ferrari FF as a daily a while back......
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