Hi I have the same problem as you, can you tell me did you buy the car from an audi dealer? and was the last service from an Audi garage

Thanks for any help

 

Bravo, I ended up purchasing a dipstick because the MMI is always a hit and miss, can never get a reading when I want.

Danluc

 

I bought my Audi A5 NEW from Audi Tamworth UK. Its registered Oct 2009. Oil problem was always there but they claimed it was normal. But it got so bad that they had to look at it Nov 2012.

It was repaired under warranty and given back to me. Other forums say it is a case of replacing Pistons and Con rods. But they said it only required to replace the crankshaft seals and breather valves.

But late 2013 it all started again!! I was due a service anyway so I booked it in and got it back all serviced. They said Oil has been sorted and if the warnig light comes on, then call in

Sure enough it did! A reduction in performance was noticed staright away and the black exhaust mark on the garage floor appeared. The oil was going from full to RED warning light in 250 miles !! Thats easily over a litre, maybe two of oil

Part one test was conducted. Failed

Part 2 test failed and Audi UK got involved with the dealership.

The solution is to replace Pistons and Con Rods. And once in there, if they notice any other damage, then that will have to fixed.

Audi UK agreed to give the parts free. Dealer reduced his costs from £120 per hour to £86 per hour. Total for 21 hours was around £2146.

But thats the minimum. once theyre in the car, they might find they need to charge for more.

I have decided to recover my car from the Tamworth Audi dealer, who still wants to charge me £200 for doing the oil checks

Following all the AUDI OIL CONSUMPTION PROBLEMS on the internet, and the poor experience I received, I WILL NEVER BUY ANOTHER AUDI EVER AGAIN !!

My Audi A5,....RIP !!

 

So finally after the 3 oil consumption test, all under warranty though, pistons and rings will be replaced on September 29, 2014, also under warranty. Quite happy about the result. Hope all goes well. Will also add that the dealership has been quite good.

 

The piston and ring replacement is the fix. Mine since repaired after 3.5 years of oil usage, now fixed by Audi has not used any oil worth mentioning. Prior is was using 1 Qt every 1200 miles.

 

Audi appears to be taking some action.

From my post in the A6 forum:

"My 2012 A6 needed 1 qt of oil 7,000 miles after the first oil change at 5K and another at 5K after the 15K oil change and another qt 2K later. I took it to the dealer who performed "Part one of oil consumption test" and replaced the crankcase pressure regulating valve and reflashed the ECM."

Won't know for a while if this improves things but no one said anything about this type of consumption being "normal"

 

I am sure if you never give up they will repair the problem. They know there is an Engineering issue with the pistons and rings, why would they replace them in production of future vehicles in 2012? The dealer had a 1/4 packet of tests provided to Audi and they replaced the pistons and rings and even stated that there has not been one vehicle that came back after the replacement for the oil consumption issue. As a matter of fact Audi or the dealer never called back to make sure I was satisfied. They know the car was repaired. The oil consumption tests only draw out the repair and consumers get tired, may end up paying the repair in part. The oil tests do not produce the same results, I had a few and not one result was the same. Funny they only pay for one test...

 

The Car is still a great vehicle, I love it. I just don't think Audi handles the repairs in the best interest of the consumer and the brand. I think it will hurt them in the long run, but shores up the profit and not many companies address problems as long as they are gaining market share, profits climbing. Customer loyalty would increase profit and future market share. Issues like the oil consumption (piston & rings) will cost Audi a part of their future customer base, but if sales continue to climb the new customers will outpace those lost by not taking care of those customers/cars stuck with the oil consumption problem or any other problem for that matter. Audi is reacting to the issue, but not at a rapid pace to satisfy the owed.

 

As I mentioned above, my A4 is getting the pistons and rings replaced but here is a bit of history on my tests.
The first test, under warranty, they did part 1 but part 2, according to the dealer failed for some reason, mainly something to do with a software updated.
The second test, also done under warranty, part 1 was done and in part 2 there was a mistake made in measurements which meant I had to do the test a third time. At this time I was also told a small fix had been made, the replacement of the oil pan and a tweak in software of the IMI.
This did not really change the outcome. I had the third test done also under warranty and this time both part 1 and 2 were successful and the result was the pistons and rings to be changed under warranty.
I do agree that this is something that Audi should address from factory but at least they are doing the fix. I also agree that this puts a real question mark on whether I will ever get an Audi again. I am lucky this time that the car is still under warranty and that the issue with mine is quite severe, 1L every 975KM.
I am not sure where the oil goes, I would think if it gets consumed it would be burned, but according to the dealership it is not burned, it is consumed. Not sure what that means.
As soon as the fix is done I will post the results to let you know how it all turns out.

 

The gases that bypass the piston and rings enter the lower crankcase and mix with the oil, the heat causes a small portion of the oil to vaporize in the crankcase. The vaporized mixture is pulled through the crankcase ventilation system (PCV) valve and back into the piston chamber. It burns along with the mixture of gases entering the cylinders and burns. Look at Audi exhaust systems there are a lot of them that are black. This is caused by the gases which includes the oil taken from the crankcase, most is burnt but the residue remains and exits the exhaust thus the blackened exhaust. This also causes carbon buildup in other areas that could build on values, cylinder heads and turbos. A little build up does not hurt, but these are other related issues caused by the badly engineered pistons and rings that were installed in some 2.0 TFSI engines from 2009-2012, so I am told.