Polo GTI High Oil Usage - Discussion Thread

[muli]

Bottom of dipstick is 1l, each notch is 100ml roughly

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[RoknRob]

If you too are still having problems with oil consumption, read this.

At 75000 km, I decided to try an experiment and drive only in manual mode.

Perhaps not surprisingly, given Gav's experience, my oil consumption dropped. I've gone through more tanks of fuel without having to top up than ever before.

But what I can't understand, is that my fuel consumption IMPROVED! So much for my justification for NOT driving in manual. I really don't get it, but there it is. Anybody else want to try the experiment?

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[staz88]

If you too are still having problems with oil consumption, read this.

At 75000 km, I decided to try an experiment and drive only in manual mode.

Perhaps not surprisingly, given Gav's experience, my oil consumption dropped. I've gone through more tanks of fuel without having to top up than ever before.

But what I can't understand, is that my fuel consumption IMPROVED! So much for my justification for NOT driving in manual. I really don't get it, but there it is. Anybody else want to try the experiment?

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See my post #1875 in this thread.

[RoknRob]

See my post #1875 in this thread.

Yes, thanks. I think the oil consumption improving was pretty well established, especially in low mileage cars.

I just thought it was interesting that it would still make a difference in a car with as much mileage as mine.

Also, I don't understand how driving in manual can improve my fuel mileage when my shift points are so different to the auto shift points that presumably are in place to maximise fuel economy. Which is what I prioritise.

So I am just saying, that if you've hesitated to use Manual all the time because you're convinced - like I was - that your fuel economy will suffer, maybe give it a try and see?

(That being said, I am basing my results on what the MFD figures are. Haven't verified them independently.)

[gavs]

The shift points are higher in the rev range so theoretically you will automatically think you will use more fuel, however you're not loading up the engine as much to push up the revs, to do that the engine pumps in more fuel. So while your revs are higher, you need less throttle input to have/generate the same momentum in manual mode.

Example:
You're driving along at 60kph in 7th and want to accelerate up to 100. Think about how much throttle you have to apply and for how long to get there in D because the engine won't kick down unless you really mash the throttle. Now the same thing in 4th gear, the car does it easily with far less throttle. So while the engine is pumping in fuel more often with the increased revs, the actual volume of fuel going in is far less because everything is less, boost is less, strain is less.... Look at when top gear tested the Prius against the m3 I think it was, similar theory....

[RoknRob]

The shift points are higher in the rev range so theoretically you will automatically think you will use more fuel, however you're not loading up the engine as much to push up the revs, to do that the engine pumps in more fuel. So while your revs are higher, you need less throttle input to have/generate the same momentum in manual mode.

Example:
You're driving along at 60kph in 7th and want to accelerate up to 100. Think about how much throttle you have to apply and for how long to get there in D because the engine won't kick down unless you really mash the throttle. Now the same thing in 4th gear, the car does it easily with far less throttle. So while the engine is pumping in fuel more often with the increased revs, the actual volume of fuel going in is far less because everything is less, boost is less, strain is less.... Look at when top gear tested the Prius against the m3 I think it was, similar theory....

Makes sense. But you'd think the engineers would have noticed that and worked out a way to mimic that, rather than simply moving the shift points. There must be a good reason why they programmed the DSG the way they did...

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[gavs]

And why they tried to cheat all the global NOx emissions as well.... Because it's cheaper to do it the easiest, shortest way. I've dealt with these OEMs for years and trust me, it all comes down to doing things as quickly and cheaply as possible, they don't give a rats about the consumer

[ScotRok]

I've just joined the forum, like most do when their car develops a fault.

my wife's 2013 build GTI is using excessive amounts of oil, it's got the CTH series engine which I have read is better than the old versions. The symptoms are smoke under full throttle and there is a film of oil on the tailgate.
Looking for a few pointers for when it goes into the dealer, I don't want to have to go through the 1000k test. The dealer I want to use is in Campbeltown and we are in Swansea. Unfortunately we didn't buy the Polo from them but did buy my Amarok and father in laws Golf new last year from them. The dealer we bought the polo from tried to sell us an extended warranty even though it had the factory one in place, doesn't bode well!

[JonW]

It shouldnt matter if you didnt buy your car from them, its all VW and warranty is valid at all dealers. You should still be under your original warranty as well id have thought, or close enough that the ACCC would find in your favour as this is a known problem, hit up VWA for it and dont pay a cent. you will need the oil test tho, they wont do anything until theyve seen the results of the test. Make sure they dont mess up the Km readings tho, my dealer wrote 1400km instead of 1040km and VWA suggested my car was borderline and not a drinker... mental. The next test it did 600 of the 1000km before the oil fill light came on, that time they took notice.

All dealers will try and sell you an extended warranty, no matter who or what it is. When i bought my Subaru it came with a 5yr extended warranty as part of the current deal, the finance guy offered to upgrade the 3yr warranty to 5 for just 2k... er, it comes with that already... car dealers, sigh...

[ScotRok]

I'm on good terms with the Campbelltown dealer, they were recommended on another forum, and I actually ordered my Rok when I was still in Scotland via email. Collected it once we arrived a month later. Then we bought a golf for my father in law two months later.
Went to look at a Jetta and ended up with the Polo. Love the cars performance but wonder if this is why it was for sale.previous owner traded it in?
Golf has got the same engine and not used any oil in 6000k's. It's still running in too.