30 MPG on 2.0 TDI. What could be wrong? (Long)

[Ootohere]

1.5 litres to fill to the correct level having no idea when it was last at the correct level if ever it was at the last service or at the time of collection. 

[Warrior193]

5 minutes ago, toot said:

1.5 litres to fill to the correct level having no idea when it was last at the correct level if ever it was at the last service or at the time of collection. 

By my estimation that's about 1/3rd engine oil capacity - was the low oil warning showing before topping up?

Apart from possible high oil consumption, is the oil monitoring system working correctly? 

[Ootohere]

1.4 TSI Twincharger engines with a 3.6 litre oil capacity could be (Still can be)1.5 litres low and no Low Oil Level light or message and you might get a Low Oil Pressure light or message first. 

Part of the reason so many died prematurely.

[Warrior193]

3 minutes ago, toot said:

1.4 TSI Twincharger engines with a 3.6 litre oil capacity could be (Still can be)1.5 litres low and no Low Oil Level light or message and you might get a Low Oil Pressure light or message first. 

Part of the reason so many died prematurely.

That truly is a crying shame, that could have been an exceptional engine. It just highlights the importance of regular checks.

Edited 20 November, 2022 by Warrior193
extra comment

[Brianjuk]

3 hours ago, J.R. said:

And what about the 1.5 litres oil consumption in a very short time?

 

We dont know how long or how many miles but the OP did say recently bought.

 

I have driven half a million miles with 3 Skodas and only used 0.5 litres of oil in total, that was on the MK1 1.9 TDi ASV engine where the rings only bedded in after 200K miles and the consumption ceased, also I had gone way beyond the scheduled  oil change.

 

Return the vehicle for a refund or you will regret it dearly, this is probably just the beginning of many problems.

Assuming I didn’t mess up checking it when I bought it, that would be 1.5l in 850 miles. 
 

I have reached out to the selling dealer. We will see what is offered.

[Brianjuk]

2 hours ago, Warrior193 said:

By my estimation that's about 1/3rd engine oil capacity - was the low oil warning showing before topping up?

Apart from possible high oil consumption, is the oil monitoring system working correctly? 

It flicked the low oil warning light on, I parked it up, let it sit and checked the dipstick, where the level was too low to touch it. I am also shocked that the low oil warning came so late. My 2004 clio, and all previous newer cars have all been better in that respect. Not a great design choice IMO

[Brianjuk]

18 hours ago, SuperbTWM said:

Have you tried looking at the raw value of the DPF pressure sensor with the engine off to verify its zero calibration and that the sensor is good?

Engine off.

Pressure differential 0hPa

differential pressure sensor static offset: 0hPa

 

[SurreyJohn]

4 hours ago, J.R. said:

And what about the 1.5 litres oil consumption in a very short time?

 

We dont know how long or how many miles but the OP did say recently bought.

Op said 125k miles, owned it a fortnight.

 

Check the mileage on receipts (and Government mot checker).  Then use this to see miles each year.  My hunch is the car got to nearer 110k miles in 4 years then has only used for local journeys during lockdowns and probably somebody started working from home so it lost it’s longer commuting journeys.  Therefore journeys far too short to ever do a full regen and the baked on soot has just built up.   
 

If it is drinking oil, and oil is full of contamination, then I suspect the pistons are going to be worn/damaged too.  It will only lead to more problems and be a money pit.   Even if it looked good value you should price it with a replacement engine and DPF, otherwise return.

[J.R.]

6 hours ago, SurreyJohn said:

Check the mileage on receipts (and Government mot checker).  Then use this to see miles each year.  My hunch is the car got to nearer 110k miles in 4 years then has only used for local journeys during lockdowns and probably somebody started working from home so it lost it’s longer commuting journeys.  Therefore journeys far too short to ever do a full regen and the baked on soot has just built up.   

 

Smart thinking! 👍

[J.R.]

Just now, J.R. said:

the baked on soot

Sounds like an advert for an oven cleaner!

 

A Mr Muscle enema (well the Lidl version) sorted out my MK1 Octavia several times, not sure I would try it on a DPF but if it was blocked anyway what is there to lose?

[MarkyG82]

2 minutes ago, J.R. said:

 but if it was blocked anyway what is there to lose?

 

We need that video'd. Pretty please.

[MarkyG82]

If the first response from the dealer isn't along the lines of being very apologetic and wanted to help you out without you being out of pocket I'd be handing the keys back with a full refund.

 

The more I hear about this car the more it needs binning off.

[Brianjuk]

I have spoken to the dealer and I am cautiously positive. 
 

what we have agreed is that they will pay for the car to be diagnosed, have the dpf removed and cleaned, the inlet tract and dpf cleaned at a terraclean centre of my choice. 
 

if, after that and an oil change, the car uses oil in the next 1000miles they will take it back and give a full refund. 
 

that seems pretty reasonable to me. What do you think? 

[varooom]

1 hour ago, Brianjuk said:

I have spoken to the dealer and I am cautiously positive. 
 

what we have agreed is that they will pay for the car to be diagnosed, have the dpf removed and cleaned, the inlet tract and dpf cleaned at a terraclean centre of my choice. 
 

if, after that and an oil change, the car uses oil in the next 1000miles they will take it back and give a full refund. 
 

that seems pretty reasonable to me. What do you think? 

I would ask for all of that to be put into writing, if you are going to go ahead with this route.

[Brianjuk]

3 hours ago, varooom said:

I would ask for all of that to be put into writing, if you are going to go ahead with this route.

Always. I’m with Sam Goldwyn. “A verbal contract isn’t worth the paper it is written on.”

[Warrior193]

5 hours ago, Brianjuk said:

I have spoken to the dealer and I am cautiously positive. 
 

what we have agreed is that they will pay for the car to be diagnosed, have the dpf removed and cleaned, the inlet tract and dpf cleaned at a terraclean centre of my choice. 
 

if, after that and an oil change, the car uses oil in the next 1000miles they will take it back and give a full refund. 
 

that seems pretty reasonable to me. What do you think? 

Sounds fair, but get all that in writing - with no wriggle-room exceptions.

[GordoGT]

I'm interested to see how this one plays out.

Sounds like a great car with a 'Worse than V6 Petrol' fuel economy at the moment.

Hope it gets sorted soon and can't wait to read what the fix is/ was.

[Brianjuk]

Not gone away but nothing to report yet. 
 

I have had the dpf cleaned and the oil changed. BUT I have caught Covid and it has properly done me over so no chance I’ll get enough miles driven to update any time soon. ☹️

pretty sure the news will not be good. The car used another 1/2 litre in the last 300 miles. My local vag specialist, who did the oil change suggested the oil burning is the real reason that the dpf keeps clogging and won’t regen. They think that explains why the dpf light seems to come on more on the motorway than around town. Next step, as soon as I’m well enough, is to get a few hundred motorway miles on it and see where we are at….

[varooom]

24 minutes ago, Brianjuk said:

Not gone away but nothing to report yet. 
 

I have had the dpf cleaned and the oil changed. BUT I have caught Covid and it has properly done me over so no chance I’ll get enough miles driven to update any time soon. ☹️

pretty sure the news will not be good. The car used another 1/2 litre in the last 300 miles. My local vag specialist, who did the oil change suggested the oil burning is the real reason that the dpf keeps clogging and won’t regen. They think that explains why the dpf light seems to come on more on the motorway than around town. Next step, as soon as I’m well enough, is to get a few hundred motorway miles on it and see where we are at….

Sorry to hear you caught COVID, not what you need with this to deal with.

 

That car is seriously chomping on the oil, and it's the oil itself that is source of the oil ash material that cannot be burnt off.

 

Your local VAG specialist is bang on, but sadly driving the car to clean exhaust is now practically an impossible task, the oil will just keep clogging up the work's.

[Brianjuk]

So, as suspected the car is still chomping oil. I will drive the rest of the 1000 miles and get the garage to note the oil used.

 

here is an out there question, I have been planning to reject it under the sale of goods act and that is probably the course I will still take, but superb l&k estates with DSG and good history are scarce in my price bracket and I’m a bit concerned I might end up with another duffer.

what about seeing if I could push the selling dealer to fund a replacement engine? Am I in cloud cuckoo land for even thinking that? 

[MarkyG82]

Depends on how much they are set to lose by you returning it. Certainly won't get a customer out of a briskoda member after all this (or anyone else doing a search).

If you do get it rejected are there any forum rules about posting the reg?

A colleague got a ford recon engine done at ford for something like £1300. So it's not an expensive thing to do in general. 

[bigjohn]

28 minutes ago, Brianjuk said:

I have been planning to reject it under the sale of goods act and that is probably the course I will still take,

 

To be honest it sounds like you've bought someone's previous problem so I think that's the best plan of action. A recon engine from Skoda will be lots of dosh(much more than £1300) - don't accept what some people call a recon engine that's just an engine out of a scrap car.  Also with this sort of oil usage lots of things will be not so good eg DPF, Cat, exhaust sensors, EGR and turbo with oil/diesel contamination. 

 

Edited 11 December, 2022 by bigjohn

[Micky 32]

It seems some of the 150’s have an issue with high oil consumption. A friend has a 2017 model with high oil consumption. Destroyed two DPF’s in a short space of time. The burnt oil was clogging the DPF. He had to replace the engine in the end.

Edited 13 December, 2022 by Micky 32

[Brianjuk]

Scores so to speak.

 

I have officially rejected the car today:

it is still using 1.35l per 1000miles of oil

there is a suspension creak (I suspect front arb)

the battery has died

and it is giving every indication that the dpf is rapidly clogging up again. 
 

let’s see if the dealer honours their word. I hope so…. If they do I will not name and shame. 
 

if anyone knows of a good Octavia or superb estate for sale as follows, please let me know: 

must have:

ULEZ compliant. 
1.4tsi or 2.0tdi

heated leather 

acc

Apple CarPlay

heated front screen

 

Much prefer:

beige leather

panoramic roof

park pilot

DCC suspension 

Limit is £15k

[varooom]

At least it's done now, hopefully you get a better example.