2.0T Increasing fuel consumption

[Kris M]

No, haven't had that problem (yet).
On the other hand, the high fuel consumption problem, I'll call it HFCP from now on, causes the engine to run rough (jerky) at any constant speed. Specially noticable with cruise control at e.g. 50 or 70.
In my case, the HFCP isn't even there after a cold start, it takes some driving before it starts.
I was able to drive 19 km with normal fuel usage by driving extremely gentle. But once the HFCP begins, it won't go away as long as the engine is running, not even after 250 km of driving.
Turning off the engine for at least 5 minutes temporarily resets the HFCP and I can drive again 1 or 2 km before the HFCP starts again. (The longer you turn off the engine, the longer it takes for the HFCP to return)

 

[systemx32]

Hello guys, i have the same problem as Kris M rpm drops and fuel consumption increase it's feels a lil bump every time when she do this, i search it on google and found this thread, i read all what you sayd so the conclusion is DPF, i talk whit some guy at my local dealer and he told me that he waits for a new firmware update that will fix dpf regeneration.
Andrei da mi add pe Facebook ( Ianis Ștefan ) poate ma ajuți cu ceva sfaturi se pare ca ești mai bine informat.

 

[7Andrei7]

An update: there are 3 of us here in Bucharest (RO) that are experiencing this problem, as far as the dealer knows. They called all of us to take the series off our ECUs and they will call us to have them replaced. I guess this is happening because the software update is not as easy as it sounds and they have to update the ECUs at the factory. Sending us new ECUs is probably their way of not immobilising our cars for a long period of time.
Will keep you guys updated.
Any news in Belgium, Spain, Bulgaria? Maybe others?

 

[Kris M]

An update: there are 3 of us here in Bucharest (RO) that are experiencing this problem, as far as the dealer knows. They called all of us to take the series off our ECUs and they will call us to have them replaced. I guess this is happening because the software update is not as easy as it sounds and they have to update the ECUs at the factory. Sending us new ECUs is probably their way of not immobilising our cars for a long period of time.
Will keep you guys updated.
Any news in Belgium, Spain, Bulgaria? Maybe others?

Thx for the update.
To not waste any time at the dealer and getting a no-fix interaction, I was waiting for any feedback about the fix that Kia is working on, as you had mentioned in some earlier post.
If you get any more details about this, please let us now, I'll be greatful for that!

 

[Ralf]

Got a mail of my dealer:

In the meantime, we have received an answer from KIA.
Apparently there are already a few cases on a worldwide level at KIA.
The fluctuating consumption would presumably purely show with the regeneration of the particulate filter in the exhaust.
To make this happen more smoothly, they are now developing a software update.

They will notify us as soon as it is approved and available.
My suspicion is that this may take a while.

I will keep you informed as soon as I receive more information.

 

[Ralf]

My average fuel consumption in liters/100km. Horizontal axis is total km at that moment. You can clearly see when problems occur.

 

[Kris M]

View attachment 52767
My average fuel consumption in liters/100km. Horizontal axis is total km at that moment. You can clearly see when problems occur.

Which value is that? Calculated yourself on fill-up? Total stats of the car? Did you reset them every time?

 

[Kris M]

I informed my dealer again that the problem is not solved.
Hopefully this time they reach out to Kia so my car gets on the list as well to motivate Kia to get it fixed sooner rather than later.

 

[Ralf]

Which value is that? Calculated yourself on fill-up? Total stats of the car? Did you reset them every time?

From stats on the car. But I calculated it many times to compare and it was correct. I did reset them every time.

 

[7Andrei7]

They have informed me in writing that the new software was done as of 20.11.2020 and that it should take 30-40 days for them to produce and ship a new ECU (with the new software) for my car. In the mean time I have new, more severe, symptoms. When the engine is cold and car is in D or R it can’t hold steady revs and is very very twitchy. They replaced all fuel injectors, did a bunch of tests and now they say it’s the ECU (software) and it will get fixed once they replaced it.
So, let’s see. Should come for Christmas or sometime beginning of next year

 

[Kris M]

They have informed me in writing that the new software was done as of 20.11.2020 and that it should take 30-40 days for them to produce and ship a new ECU (with the new software) for my car. In the mean time I have new, more severe, symptoms. When the engine is cold and car is in it can’t hold steady revs and is very very twitchy. They replaced all fuel injectors, did a bunch of tests and now they say it’s the ECU (software) and it will get fixed once they replaced it.
So, let’s see. Should come for Christmas or sometime beginning of next year

That's interesting, so currently we have conflicting information between 2 sources...

 

[Kris M]

Update: my dealer first came back asking to provide actual fueling numbers as there could be a problem with the instrument panel (software).
I provided all fueling quantities and kilometers driven and this morning they informed me with this (paraphrased):
We sent all information to Kia and they suspect it is a problem with the particulate filter regeneration and Kia Motors Europe is working on a solution.

 

[Ralf]

It's clear that KIA can't ignore the problem. Hopefully the solution won't take to long.

 

[Kris M]

It's clear that KIA can't ignore the problem. Hopefully the solution won't take to long.

Unfortunately GPF problems seem to exist from at least june 2019, as I found this thread on the uk stinger forum:

Anyone had their GPF light on?

So I didn't even know a GPF (Gasoline Particulate Filter) was a thing until two weeks ago. My car had its very first service and on the way home I decided to put it in Sport mode and have some fun on the country roads. Anyway half way home I noticed the GPF light come on. No noticeable...

www.kiaownersclub.co.uk

The only difference seems to be that they got the GPF indication on the dash, which we don't, but they had, or have, the same other issues as us: increased fuel consumption and the engine running rough.

 

[STINGERFIN]

I'm very to eager on any progress with Kia Motors Europe. I own 2019 GT (3.3l), which has issues on the GPF. I have been to the dealership many times and they did an ECU update + cleaned the filter on spring 2020. As the problems persist they have been in contact with the local importer, but they say no issues can be found or identified with my car.

Based on butt-dyno I think the regen is on most of the time. The problem is highlighted when temperatures drop to less than 15 celcius degrees. It's like regen is always on and the start and stop more or less never functions. Engine feels rought and fuels consumption is high. Also the performance is not always the same.

I'm very keen to hear any development on the new firmware done in Nov 2020. If that turns out to be valid, I will contact my dealer if the 3.3. is affected too.

 

[ch123]

Hi, I also drive a 2019 2.0 GTLINE in Hungary a bought the car in June with 14k km and managed to keep consumption levels around 9,5 with long trips but usually dinamic driving. Now I have 29k km on and since a month or so i noticed that the car started to use 2-3 liter more fuel avg of 11,5 12,5 and could get it down like you guys even if a drove very careful. Tried to contact dealer but just sad he never heard of this problem and hasn't got any kind of firmware/software update that he could help me with.

 

[7Andrei7]

@ch123 it was the same for me the first time I told the dealer about it. Push them a little and they will look. After I made them report the problem to Kia they miraculously found similar cases in Poland and Germany.

 

[ch123]

They gave me an appointment for 11th of january so hopefully they can manage to update the firmware until then or something that helps.

If you guys have any addvice, what to tell the mechanic I could use the help from your expreiences.

Thanks!

 

[Ralf]

I was wondering. If KIA don't show up with a solution. Would it be possible to have a GPF delete done?

 

[STINGERFIN]

I have been looking into it myself. Apparently this will trigger engine error light (CEL) so just replacing the pipe is not an option. It requires an ECU tune to remove GPF. I'm interested if someone finds a tune that can reliably do this. With the tune we get more power as side-benefit if we wish