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Looking at a High Mileage 2013 S6

Old 10-20-2018, 08:33 AM
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Default Looking at a High Mileage 2013 S6

Greetings. Looking ago a few 2013 Audi S6 with around 80000-90000 miles. Any issues that can arise?? They all have clean carfax and just like any other cars with these miles anything can go wrong. I was looking at parts for these cars like brakes and they are quite expensive. They also have air suspension which worries me a bit. Any input is appreciated. Thanks to all

Last edited by graycat89; 10-20-2018 at 11:28 AM.
Old 10-20-2018, 10:25 AM
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I had one air suspension experience personally with Audi - '04 S4. 157k from new, zero issues. I get those cars in for service here, and besides some oil leaks, and intercooler pipe leaks, they are incredibly built IMHO.

Carfax might show you the service history too if you look, depending on where it was done.

Brakes, and really any parts are going to be expensive - because it was an expensive car to start off with
Old 10-20-2018, 10:56 AM
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The brakes on the S6 are a lot cheaper to replace on the S6, than the RS7.

The S6 rear brakes are similar to the A6, the 4H0615301AL S6 front rotor are the expensive S6 brake parts.
MSRP = $330.00 each, Online Price = $265.98 each

The main issue with the 4.0T S6 is the Turbo oil supply screen and check valve, plus the oil seperator, since there is a lot of labor/time to replace. The clogged turbo oil supply screen and check valve are what lead to many turbo failures at around 35k to 50k miles. Many of us are changing the oil/filter every 5k miles, hoping to delay the inevitable failure.

Note the TSB, below, indicates the production fix for this is the revised oil strainer: revision "G".

The TSB (revision 4) for this failure runs from 2013 to 2017 4.0T model years: https://www.audiworld.com/forums/s6-...urbos-2955774/



Last edited by m444; 10-20-2018 at 10:59 AM.
Old 10-20-2018, 11:22 AM
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Thanks to all for the replies.
Old 10-20-2018, 11:32 AM
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What kind of oil do you use?? I have a 2008 Audi a6 avant and a 2005 AUDI TT 3.2 DSG and use Mobil 1 0w-40 European formula. According to the service manual the oil can last up to 10000 which I think is WAY too long. Since both cars are non turbos I generally do mine every 7500 or 8000 miles. ECS Tuning sells an oil change kit with Castrol 5w 30 professional extended life for the S6.
Old 10-20-2018, 07:15 PM
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Clean CarFax means nothing.

I had a brand new Lexus get stolen in Atlanta a week after I bought it. Cops chased the suspects high speed through midtown before he crashed into a parking garage and fled on foot. Police impounded the car until I could pick it up. I had the car repaired by a reputable shop for about $15,000.

When I sold the car about 3 years later I ran a CarFax just to see what was on the report. Nothing! The report was 100% clean. No mention of the theft, police chase, or the crash into the garage. No mention of the body shop repair, either.
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Old 10-21-2018, 02:52 AM
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Yup, (CarFax means nothing) and thank god for that! The funny thing is, it really is only a good thing for the buyer (if it's reported) if you are selling a car, it only helps if like the service history is reported to CarFax, but even in that case if one shop reports and one does not, it now appears that perhaps you skipped service and maintenance. Also over the years we've all had something happen to our vehicles like a small dent accident, and I always have the vehicles repaired (with the best available auto body shops) Something small like that should not be reported it only comes across as negative to a potential buyer.
Old 10-21-2018, 09:17 AM
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Originally Posted by m444
The brakes on the S6 are a lot cheaper to replace on the S6, than the RS7.

The S6 rear brakes are similar to the A6, the 4H0615301AL S6 front rotor are the expensive S6 brake parts.
MSRP = $330.00 each, Online Price = $265.98 each
FWIW the S6 rotors are similar but not the same as A6. S6 is larger diameter.
S6 $190 online 356x22mm
https://genuineaudiparts.com/parts/2...=REAR%20BRAKES

A6 $88 330x22mm
https://genuineaudiparts.com/parts/2...=REAR%20BRAKES


Old 05-23-2022, 11:05 AM
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I'm considering a high milage 1 owner purchase as well at 91,000 miles. I spoke to one shop that mentioned many of S6 C7 issues coming in for piston failure and damage. I intend to do a pre purchase inspection, but also maybe add to it compression tests for an additional $575 bucks in addition to the PPI cost $370. I figure pay about a grand now and avoid more grands later. Who knows...LoL. From Pics looks in immaculate condition. But I will let the PPI and Compression test guide me along with mechanic input. We'll see.
Old 05-23-2022, 12:13 PM
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Originally Posted by subterFUSE
Clean CarFax means nothing.

I had a brand new Lexus get stolen in Atlanta a week after I bought it. Cops chased the suspects high speed through midtown before he crashed into a parking garage and fled on foot. Police impounded the car until I could pick it up. I had the car repaired by a reputable shop for about $15,000.

When I sold the car about 3 years later I ran a CarFax just to see what was on the report. Nothing! The report was 100% clean. No mention of the theft, police chase, or the crash into the garage. No mention of the body shop repair, either.
I'm considering a 2013 S6 high milage 1 owner purchase as well at 91,000 miles. I spoke to one shop that mentioned many of S6 C7 issues coming in for piston failure and damage. I intend to do a pre purchase inspection, but also maybe add to it compression tests for an additional $575 bucks in addition to the PPI cost $370. I figure pay about a grand now and avoid more grands later. Who knows...LoL. From Pics looks in immaculate condition. But I will let the PPI and Compression test guide me along with mechanic input. We'll see.

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