Au7o mascotAu7o
Known IssuesTest Hub demo
  1. Au7o
  2. /
  3. Known Issues
  4. /
  5. Audi
  6. /
  7. A6
Audi · Known Issues

2013 Audi A6 Problems: 4 Known Issues

2013 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

Share:@au7o.io

2013 · All trims · All engines

Choose the year and equipment for your written issues and visual request.

Known IssuesMotorcycle IssuesDTC LookupDrivePricingAboutTermsPrivacyCookiesConsentData rightsCopyrightFeedback
Share:@au7o.io

Vehicle data and repair guidance on this site are compiled with AI assistance and may contain errors. Always verify with your service manual or a qualified mechanic.

Data protection representation

DataRep representative in the United KingdomDataRep representative in the European Union
Au7o · 2026
Built for DIY mechanics. Privacy-first.
Explore free Hub demo
No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

$4.99/month plus taxes at launch · No payment today

Preview the XT6 example
Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2013 Audi A6 has 4 documented known issues. None of the listed issues is rated critical; this is not a complete reliability assessment. Across all issues with published estimates, repair costs range from $100 to $2,500. DIY maintenance guides at au7o.io.

In This Article

  • A6 Engine1
  • A6 Brakes1
  • A6 Electrical1
  • A6 Emissions1
  • Recalls16
  • FAQ
Get Started
Back to top

In This Article

  • Engine1
  • Brakes1
  • Electrical1
  • Emissions1
  • Recalls16
  • FAQ

All 4 Known Issues

Filter:
ALL YEARS2025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995

On the 2005-2023 Audi A6, water pump failures are common across all A6 generations due to plastic impeller degradation and seal leaks. Audi uses plastic impellers that crack or disintegrate over time (typically 80,000-120,000 miles), causing coolant leaks and overheating. The water pump is often driven by the timing belt or timing chain, so replacement is recommended during timing service to save labor. Thermostat housings also crack due to heat cycling, causing coolant leaks and erratic temperature readings. Symptoms include coolant leaks under the car, overheating in traffic, temperature gauge fluctuations, and coolant warning lights. Ignoring a failed water pump can lead to severe engine overheating, warped cylinder heads, and blown head gaskets ($3,000-$5,000 repair). Some models have electric auxiliary water pumps that also fail, causing poor heater performance.

This issue also affects: Audi Q7, Porsche Panamera, SEAT Ateca

Common Symptoms

  • Coolant leak under front of car (pink/green puddle)
  • Overheating in stop-and-go traffic or at idle
  • Temperature gauge rising above normal (middle position)
  • Coolant warning light or low coolant message
  • No heat from cabin heater (auxiliary pump failure)
  • Hissing or gurgling noise from engine bay
  • Steam or coolant smell from engine

How to Fix

Replace water pump AND thermostat together ($800-$1,500 with labor). Always use OEM or high-quality aftermarket parts (Rein, Hepu)—cheap pumps fail within 20,000 miles. If water pump is timing belt/chain driven, replace during timing service to save labor. Flush cooling system and refill with OEM Audi G12++ or G13 coolant (do NOT mix types). Inspect coolant hoses and replace if cracked. If auxiliary electric water pump fails, replace separately ($300-$600). Monitor coolant level weekly and address leaks immediately to prevent overheating damage.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Beck/Arnley 131-2517 main engine water pump
    Cross-refBeck/Arnley 131-2517

    Confirm VIN and current fitment before ordering; this is not an auxiliary water pump.

    eBay

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • TipPhotograph the suspected leak before cleaning it, then recheck after the system is filled and the car is driven. The Audi bulletin requires the leak to be reproduced rather than inferred from old residue.
  • WarningConfirm that the failed component is the main engine coolant pump. The A6 also has auxiliary pumps, and those are different parts with different repair roles.
Typical repair cost:$800 - $1,500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence

On the 2012-2015 Audi A6, audi TSB 2037761/1 covers a specific situation in which a 2012-2015 A6 shows ABS/ESP warnings and the engine does not switch off with a normal press of START ENGINE STOP. The ignition system uses the ABS control unit's vehicle-speed signal to determine whether the car is stationary. A control-module/signal fault can remove that signal; prolonged wheel slip in winter can also make wheel speeds appear implausible and temporarily deactivate ABS even when there is no permanent system error. The previous record duplicated the older C5 Bosch-module card and sent users to a 4B0614517P search without establishing vehicle generation, DTC, system version, or a failed module.

Common Symptoms

  • ABS or ESP warning is shown in the instrument cluster
  • A normal press of START ENGINE STOP does not switch off the engine while stopped
  • The condition may follow loss of the ABS speed signal or prolonged winter wheel slip

How to Fix

Bring the vehicle to a complete stop in a safe location. Audi states that below 6 mph (10 km/h), the emergency-off function is activated by holding START ENGINE STOP while pressing the brake pedal. Diagnose the vehicle according to the stored DTCs rather than ordering an ABS module from the warning alone. If the warning followed sustained winter wheel slip, Audi notes that the system may become fully active again after the ignition is switched off and the vehicle is restarted; persistent warnings still require diagnosis. Do not use the emergency-off procedure while driving except as described by the owner's manual and Audi safety information. This informational bulletin specifies no replacement part, so this record has no commerce link.

Owner tips & cautions

  • WarningStop safely before using the emergency-off function. At speeds below 6 mph, Audi specifies holding START ENGINE STOP while pressing the brake pedal.
  • TipSave the full DTC scan and the conditions that preceded the warning, including sustained wheel slip. The bulletin directs diagnosis by DTC and does not identify a universal ABS replacement part.

Research This Issue

GoogleRedditYouTubeNHTSA
Manually Verified
High ConfidenceVerifiedReviewed Jul 2026

On the 2005-2023 Audi A6, the Audi A6 is prone to various electrical gremlins across all generations, including window regulator failures, door lock actuator failures, MMI/infotainment glitches, and battery drain issues. Window regulators fail due to weak plastic clips in the mechanism, causing windows to drop into the door or move slowly. Door lock actuators wear out, causing doors to unlock randomly, fail to lock, or make grinding noises. MMI (Multi Media Interface) infotainment systems freeze, reboot randomly, or display "SAFE" mode. Battery drain issues (parasitic draw) are common, leaving the car dead after sitting for a few days. Many electrical issues are caused by aging control modules, corroded connectors, or software bugs. While frustrating, most electrical issues are not safety-critical and can be addressed individually as they arise.

Common Symptoms

  • Window drops into door or won't roll up/down
  • Door locks fail to lock or unlock (one or more doors)
  • Grinding or clicking noise from door when locking
  • MMI screen freezes, reboots, or shows "SAFE" mode
  • Battery dies after car sits for 2-3 days
  • Warning lights for systems that work fine (phantom codes)
  • Backup camera, parking sensors, or adaptive cruise intermittent

How to Fix

Window regulator replacement: $300-$600 per window (DIY $150-$250 with aftermarket kit). Order regulator with metal clips, not plastic. Door lock actuator: $200-$400 per door at dealer, DIY $50-$100 per actuator (1-hour job). MMI/infotainment glitches: Perform hard reset (hold power + volume up for 10 seconds). If that fails, Audi dealer can update software or replace MMI unit ($1,000-$2,500). Battery drain: Have dealer perform parasitic draw test to identify faulty module. Common culprits: trunk electronics, MMI, comfort control module. Address issues as they arise—most are minor annoyances, not showstoppers.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine Audi front-left window regulator, motor not included
    OEM4F0837461DCross-ref4F0837461C (previous revision)

    Quantity 1 only for a mechanically confirmed front-left regulator failure on the C6 A6. Confirm VIN and door position before ordering.

    eBayFCP Euro

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Owner tips & cautions

  • TipListen for the motor and watch whether the glass tilts before buying anything. Motor noise with poor glass movement points toward the mechanical regulator; silence requires an electrical diagnosis first.
  • Warning4F0837461D is front-left and does not include the motor. It is not the right part for another door position or for a failed switch, motor, door module, or lost one-touch setting.
  • WarningThe front door contains a side-airbag sensor. Follow the factory battery and airbag safety procedure before disassembling the window frame.
Typical repair cost:$100 - $2,500

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence

On the 2012-2014 Audi A6 2.0L TFSI, audi emissions service action 17F9 covers certain 2011-2014 vehicles equipped with the 2.0L TFSI engine, including affected A6 vehicles in the 2012-2014 model-year range. The pressure-regulating valve diaphragm may be damaged and the vehicle may fail an emissions inspection. Eligibility is VIN-specific. The former record incorrectly combined this 2.0T campaign with the different 3.0T crankcase-ventilation assembly and promoted an unrelated diaphragm kit, valve cover, and catch can as interchangeable fixes.

This issue also affects: Audi A4, Porsche Cayman, SEAT Leon

Common Symptoms

  • Vehicle may fail an emissions inspection
  • Pressure-regulating valve diaphragm is damaged during campaign inspection

How to Fix

Check the VIN with Audi and ask whether service action 17F9 is applicable or already complete. The Audi procedure inspects the pressure-regulating valve and, when the inspection calls for it, installs repair kit 06H198542A. Do not order the former 06H103495AK search result, Dorman diaphragm, 3.0T valve-cover assembly, or catch can as the campaign remedy. A 3.0T A6 or a vehicle with ongoing drivability or oil-consumption symptoms requires a separate engine-specific diagnosis.

Find a Audi dealer

Choose to share your location for this search, or enter an area below. Your search location is sent to Google to find dealers.

Open Audi dealer map in Google Maps ↗

Call to confirm they service Audi vehicles and check your VIN, recall eligibility, parts availability, and appointment options.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

Check your VIN for an open recall before buying.A dealer repairs an open manufacturer recall at no charge. Confirm coverage with NHTSA first.
  • Pressure-regulating valve repair kit
    OEM06H198542A$0

    Quantity 1 only when the 17F9 inspection procedure calls for replacement. Dealer and VIN check first; no retail purchase is needed for an open service action.

Owner tips & cautions

  • TipHave Audi check service action 17F9 by VIN before buying a crankcase-ventilation part.
  • WarningThis record is for the 2.0L TFSI campaign only. The 3.0T uses different components and must not be matched to this repair kit by model name alone.
Typical repair cost:$0 - $0

Research This Issue

GoogleRedditYouTubeNHTSA
Recall Related
High ConfidenceVerifiedReviewed Jul 2026
NHTSA Recalls16 recalls

AIR BAGS

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi RS6 Avant, RS7, 2020-2021 A6 Allroad, S6 Sedan, S7, 2019-2021 A6 Sedan, and A7 vehicles. The score line on the passenger air bag may not have been manufactured correctly.

Campaign #21V15900010/03/2021

ELECTRICAL SYSTEM:STARTER ASSEMBLY

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019-2020 Audi A6 vehicles equipped with mild-hybrid technology and 2.0TFSI engines. Moisture may enter the starter generator and cause an electrical short circuit.

Campaign #20V15300019/03/2020

ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE:FUEL LEVEL FLOAT/SENSOR/SENDING UNIT

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 RS6 Avant and RS7, 2020-2022 A6 Allroad, S6 Sedan, and S7, and 2019-2022 A6 Sedan and A7 vehicles. The fuel level sender may stick, causing an inaccurate fuel level reading to be displayed on the instrument cluster.

Campaign #22V15500014/03/2022
🔧
A mechanic who knows YOUR exact car
Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.
Get ahead of Audi A6 problems — free
Leave your email and we'll alert you the moment there's a new recall or known issue for your Audi A6. Free, no account needed.

Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

Other Audi Models

Audi R830Audi Q329Audi A427Audi S722Audi S419Audi S819

Frequently Asked Questions

What are the most common Audi A6 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2013 Audi A6 has 4 documented issues. The most frequently reported are: Water Pump and Thermostat Failure (Overheating), 2012-2015 A6 ABS/ESP Warning With Engine Will Not Switch Off, Electrical Issues (Window Regulators, Door Locks, MMI). None are rated critical, but regular maintenance is recommended.

Is the Audi A6 reliable?

The 2013 Audi A6 has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Audi A6 problems?

Repair costs for known Audi A6 issues range from $0 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2005-2023 Audi A6 Water Pump and Thermostat Failure (Overheating)?

Water pump failures are common across all A6 generations due to plastic impeller degradation and seal leaks. Audi uses plastic impellers that crack or disintegrate over time (typically 80,000-120,000 miles), causing coolant leaks and overheating. The water pump is often driven by… Repairs typically run $800-$1,500. Severity: medium.

What is the 2012-2015 Audi A6 2012-2015 A6 ABS/ESP Warning With Engine Will Not Switch Off?

Audi TSB 2037761/1 covers a specific situation in which a 2012-2015 A6 shows ABS/ESP warnings and the engine does not switch off with a normal press of START ENGINE STOP. The ignition system uses the ABS control unit's vehicle-speed signal to determine whether the car is stationa… Severity: medium.

What is the 2005-2023 Audi A6 Electrical Issues (Window Regulators, Door Locks, MMI)?

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

ELECTRICAL SYSTEM

Volkswagen Group of America, Inc. (Audi) is recalling certain 2020-2022 Audi S7, S6 Sedan, A6 Allroad, 2021-2022 RS7, RS6 Avant, 2019-2022 A7, and A6 Sedan vehicles. Liquid spilled in the rear seat may penetrate and cause the gateway control module to shut down.

Campaign #22V86100021/11/2022

SERVICE BRAKES, HYDRAULIC:FLUID

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi S7, S6 Sedan, RS7, RS6 Avant, A6 Allroad, 2019-2021 A7, and A6 Sedan vehicles. An incorrectly labeled brake fluid cap may have been installed, which can result in the use of the wrong type of brake fluid.

Campaign #23V60100025/08/2023

+ 11 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

The Audi A6 is prone to various electrical gremlins across all generations, including window regulator failures, door lock actuator failures, MMI/infotainment glitches, and battery drain issues. Window regulators fail due to weak plastic clips in the mechanism, causing windows to… Repairs typically run $100-$2,500. Severity: low.

What is the 2012-2014 Audi A6 Crankcase Pressure-Regulating Valve Service Action 17F9 (2.0T)?

Audi emissions service action 17F9 covers certain 2011-2014 vehicles equipped with the 2.0L TFSI engine, including affected A6 vehicles in the 2012-2014 model-year range. The pressure-regulating valve diaphragm may be damaged and the vehicle may fail an emissions inspection. Elig… Repairs typically run $0-$0. Severity: low.