2015 Audi S6 problems

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The Audi S6 is the performance variant of the Audi A6, an executive car produced by German automaker Audi. It went on sale in 1994, shortly after the "A6" designation was introduced, replacing the "100" nameplate.

The original S6 was largely the same car as the outgoing, original Audi S4 (C4) (Ur-S4), with the only visible differences being new body-cladding and badging. In certain markets where the even-higher performance RS6 (which is also based on the A6) is not sold, the S6 is the most powerful A6 trim there.

The S6, like all Audi "S" models, is fitted as standard with Audi's trademark quattro four-wheel drive (4WD) system, the S6 using the Torsen-based permanent 4WD.

2015 Audi S6

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Common 2015 Audi S6 problems

Based on complaints from owners of the Audi S6 2015, several common problems have been reported:

  1. Ride Height Sensors Failing:
    • The ride height sensors failing can lead to the vehicle sagging at corners or on one side, indicating issues with the suspension system. This can be identified by a service suspension message on the dashboard (C1031F1 code). Worn sensors can cause the vehicle to sag, affecting the overall driving experience.
  2. Turbocharger Failure:
    • Turbocharger failure in the Audi S6 2015 can occur due to oil starvation, often caused by clogged oil feed lines and filters. Lack of regular oil changes can exacerbate this issue, leading to sudden lack of engine power, engine misfires, rough running engine, and potential damage to the turbocharger system.
  3. Ignition Coil Failure:
    • With a V8 engine configuration, the Audi S6 2015 is prone to ignition coil failures. This problem can manifest as a flashing check engine light, engine misfires, and rough engine performance. It is recommended to replace the spark plugs along with the ignition coils to ensure optimal engine operation.
  4. Coolant Leaking:
    • Coolant leaks in the Audi S6 2015 can result from water pump failures over time. Low coolant levels and warning lights on the dashboard can indicate this issue. If left unaddressed, coolant leaks can lead to engine overheating, necessitating water pump replacement. Regular maintenance and prompt repairs are crucial to prevent engine damage.
  5. Start-Stop Technology Defects:
    • The start-stop technology in the Audi S6 2015 has been associated with complaints related to sudden engine stalls and difficulties starting the engine. This issue can be attributed to oil-starved turbochargers caused by clogged filters, leading to acceleration noises and potential engine shutdowns while driving.

These problems highlight the importance of regular maintenance, timely repairs, and thorough inspections to address issues promptly and ensure the Audi S6 2015 operates smoothly. Owners should stay vigilant for warning signs such as dashboard alerts, unusual engine noises, and performance changes to address potential problems proactively.

2015 Audi S6 engine

Is it worth it to buy an Audi S6?

Is the Audi S6 a good car? The Edmunds experts tested the 2024 S6 both on the road and at the track, giving it a 8.3 out of 10. Edmunds' consumer reviews show that the 2024 S6 gets an average rating of 5 stars out of 5 (based on 3 reviews) What about cargo capacity?

Is the Audi S6 fast?

2022 Audi S6 Sedan Overview

The 2022 Audi S6 Sport Sedan turns heads on Orange County roads with its 444 horsepower, 443 lb-ft of torque, and taking only 4.4 seconds to go from 0-60 mph.

What engine does a 2015 Audi S6 have?

4.0 L V82015 Audi S6 / Engine

The 2015 Audi S6 is the performance variant of the A6. The all-wheel-drive sedan is powered by a twin-turbocharged 4.0-liter V-8 rated at 420 hp and 406 lb-ft of torque, and paired to a seven-speed dual-clutch automatic transmission.

What is the mileage of Audi S6?

The S6 mileage is 13.4 kmpl.

Is The Audi S6 A Good car?

Is the Audi S6 a good car? The Edmunds experts tested the 2024 S6 both on the road and at the track, giving it a 8.3 out of 10. Edmunds' consumer reviews show that the 2024 S6 gets an average rating of 5 stars out of 5 (based on 3 reviews) What about cargo capacity?

Is the Audi S6 fast?

2022 Audi S6 Sedan Overview

The 2022 Audi S6 Sport Sedan turns heads on Orange County roads with its 444 horsepower, 443 lb-ft of torque, and taking only 4.4 seconds to go from 0-60 mph.

Is the Audi A6 a reliable car?

The Audi A6 Reliability Rating is 3.5 out of 5.0, which ranks it 8th out of 30 for luxury fullsize cars. The average annual repair cost is $913 which means it has poor ownership costs. The severity of repairs is average, and major issues are less frequent than average, so major repairs are not common for the A6.

Is Audi S6 twin turbo?

The standard 2.9-liter V-6 is twin-turbocharged and uses a 48-volt hybrid system to power an electric supercharger for additional boost. Altogether, the system pumps out a robust 444 horsepower.

2015 Audi S6 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Audi S6 problems, we found that the most common problems with these 2023 model year vehicles are:

  • Engine problems
  • Fuel/propulsion system problems
  • Unknown or other problems

The graph below shows statistics for all 2015 Audi S6 vehicle components and the number of complaints received.

2015 Audi S6 complaints

The NHTSA has received 4 complaints about various vehicle components related to the 2015 Audi S6.

2021-09-01

ENGINE PROBLEM

  • Date Of Incident: 2021-05-31
  • VIN: WAUF2AFC6FN
  • Components: ENGINE
  • Summary: Turbos blew causing the vehicle to lose power while trying to merge in traffic.
2021-06-11

ENGINE,FUEL/PROPULSION SYSTEM PROBLEM

  • Date Of Incident: 2020-11-15
  • Crash: 1
  • VIN: WAUF2AFC9FN
  • Components: ENGINE,FUEL/PROPULSION SYSTEM
  • Summary: Multiple turbo failures. Engine shook violently then suddenly stopped in the middle of the road. This same issue happened 3 times affecting both turbos. It may be due to faulty oil filter/strainer. From online research (link below) this is a common problem for C7 Audi s6. https://www.audizine.com/forum/showthread.php/851578-2016-S6-4-0T-Turbo-Failure
2021-04-06

UNKNOWN OR OTHER PROBLEM

  • Date Of Incident: 2021-04-06
  • VIN: WAUF2AFC4FN
  • Components: UNKNOWN OR OTHER
  • Summary: I WAS DRIVING DOWN THE HIGHWAY AND MY SUNROOF EXPLODED. THERE WAS A LOUD BANG AND I SAW AND FELT AIR AND DEBRIS COME IN THROUGH MY SUNROOF VISOR VENTS. WHEN I PULLED OVER AND GOT OUT OF THE CAR I SAW MY SUNROOF HAS EXPLODED. I SAY EXPLODE BECAUSE IT IS CLEARLY VISIBLE THAT THE SUNROOF IS BROKEN FROM THE INSIDE OUT. THERE WERE NO TRUCKS AROUND TO KICK UP DEBRIS AND IT WAS NOT HIT BY A ROCK. AUDI STILL CLAIMS NO FAULT EVEN THOUGH THERE WERE CONSUMER REPORTS ARTICLES AND RECALLS DONE ON OTHER MODELS. LUCKY FOR ME MY SUNROOF VISOR WAS CLOSED IF IT WAS NOT I WOULD HAVE BEEN RAINED DOWN ON BY THOUSANDS OF SHARDS OF GLASS CAUSING A SAFETY ISSUE. THE GLASS EXITING THE VEHICLE HAS SCRATCHED THE ROOF AND TRUNK LIKE A SHOTGUN BLAST. AS IT IS THE SOUND OF THE SUNROOF EXPLODING WAS ENOUGH TO STARTLE MANY PEOPLE INTO AN ACCIDENT. IT IS A SHAME THIS STILL GOES ON TODAY AND AUDI DOES NOT WANT TAKE RESPONSIBILITY FOR THIS FAULT. NON-THE-LESS I AM FORCED TO FILE AN INSURANCE CLAIM TO GET THIS REPAIRED.
2021-03-23

ENGINE PROBLEM

  • Date Of Incident: 2021-03-05
  • VIN: WAUF2AFC5FN
  • Components: ENGINE
  • Summary: DRIVING ON THE NEW JERSEY TURNPIKE AND BOTH TURBOCHARGERS FAILED. CAR LOST POWER AND I HAD TO STEER TO SIDE OF THE HIGHWAY WITHOUT POWER STEERING AND BRAKES FROM FAR LEFT LANE. AUDI SERVICE SAYS BEARINGS STARVED OF OIL AND SEIZED. THEY SAID THIS IS A COMMON PROBLEM WITH THE 4.0 TWIN TURBO AUDI ENGINES AND THAT THE OIL FEED LINE GETS BLOCKED AND STARVES THE TURBOCHARGERS OF OIL, RESULTING IN BEARING FAILURE. REPAIR COST IS $9,000. CAR HAS LESS THAN 70,000 MILES. AUDI HAS A TECHNICAL SERVICE BULLETIN ON FILE WITH THE NHTSA THAT SPECIFICALLY ADDRESSES THIS KNOWN PROBLEM. AUDI NORTH AMERICA WILL NOT ASSIST WITH COST OF REPAIRS.

2015 Audi S6 recalls

The National Highway Traffic Safety Administration (NHTSA) has issued 2 recalls for different components of the 2015 Audi S6.

2022-03-23
  • Manufacturer: Volkswagen Group of America, Inc.
  • Components: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
  • Summary: Volkswagen Group of America, Inc. (Audi) is recalling certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 vehicles. The turbocharger oil supply strainer can become blocked, causing wear to the bearings due to lack of lubrication.
  • Consequence: Worn bearings can cause the turbine wheel to contact the turbocharger housing or cause the shaft to break, causing an engine stall and increasing the risk of a crash.
  • Remedy: Dealers will replace the oil strainer and perform an oil change, free of charge. Owner notification letters were mailed August 4, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 21H7.
2018-06-04
  • Manufacturer: Volkswagen Group of America, Inc.
  • Components: AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION
  • Summary: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S6 and S7, 2012-2018 A7 and A6 Sedan, and 2014-2018 RS7 vehicles equipped with basic seats (with or without heating). Stress or wear of the body-sensing mat within the front passenger seat may cause the Passenger Occupant Detection System (PODS) control module to malfunction.
  • Consequence: If the PODS module malfunctions, the front passenger air bag may not deploy properly in the event of a crash, increasing the risk of injury.
  • Remedy: Volkswagen will notify owners, and dealers will install a PODS system repair kit, free of charge. The recall began November 29, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 74D5.

Positive 2015 Audi S6 car reviews

  1. Norwood Reichert 2024-07-14

    I recently traded in my 2011 Audi S4 Prestige with drive Select for a 2013 S6 with the invovation package. Even though the S6 was 30% more expensive than the S4, I still consider it a bargain. In my opinion, it rides better, handles better, is faster, and is much more technologically advanced than the S4. Surprisingly, it also gets just as good gas mileage. As someone who has been driving Audi Quattros since 1987 and has owned eleven of them, I can confidently say that the 2013 Audi S6 is one awesome car!

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Additional sources

More sources of information about 2015 Audi S6 problems:

Any S6 engine problems out there? - AudiWorld Forums
Any S6 engine problems out there? - AudiWorld Forums
https://www.audiworld.com/forums/s6-c7-platform-discussion-199/any-s6-engine-problems-out-there-2897208/

Mar 9, 2016 ... AudiWorld Member. Looking at getting an S6 soon, 2013-2015. Has anyone had any major engine problems or hear of any? I did a little search ...

Audi S6 Problems: 4th Generation (2013 to 2018) - Expert Tips - 1A ...
Audi S6 Problems: 4th Generation (2013 to 2018) - Expert Tips - 1A ...
https://blog.1aauto.com/audi-s6-problems-4th-generation-2013-to-2018/

Sep 15, 2022 ... Top 5 Problems with the 2013 to 2018 4th Generation Audi S6 · 1. Ride Height Sensors Failing · 2. Turbocharger Failure · 3. Ignition Coil Failure.

Would a 15-16 Audi S6 be a good daily? : r/Audi
Would a 15-16 Audi S6 be a good daily? : r/Audi
https://www.reddit.com/r/Audi/comments/141qc15/would_a_1516_audi_s6_be_a_good_daily/

Jun 6, 2023 ... 15 and below had some odd issues, specifically with the mechatronics. -speaking of mechatronics, they will have problems. It's a fact. All OB5/ ...

A6 Turbodiesel common issues - Forum
A6 Turbodiesel common issues - Forum
https://www.audizine.com/forum/showthread.php/893360-A6-Turbodiesel-common-issues

Apr 27, 2020 ... A6 Turbodiesel common issues. Thread: A6 ... Any common failure parts? I've got a friend that is ... 2015 Audi C7 A6 TDI S-Line Black Optics.

Audi S6 Problems and Complaints - 9 Issues
Audi S6 Problems and Complaints - 9 Issues
https://repairpal.com/problems/audi/s6

Top Audi S6 Problems · Bushings May Deteriorate With Age and Cause Noise · Rainwater May Accumulate in Plenum Tray Due to Clogged Drains · Overheating Due to ...

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S6 2016
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S6 2017
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audi s6 2018 photo
S6 2018
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S6 2022
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S6 1995
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S6 1996
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