Photo: Wikimedia Commons (CC)
Every generation
Power
0–62 mph (0–100 km/h)
Top speed (250 km/h)
Combined, EPA 2027
What owners say
Our take, from owner reports
Sentiment is mixed and heavily dependent on the specific generation and powertrain.
7 problems reported (2 very frequent, 4 recurrent, 1 isolated) · medium confidence
Problems owners report
- Very frequentCatastrophic turbocharger failure (C7 4.0T V8)
Caused by restrictive oil screens leading to oil starvation, turbo failure, and potential engine destruction. Repair costs are extremely high ($9,000-$12,000 USD at a dealer). A manufacturer recall addressed the screen design.
- Very frequentHigh maintenance and repair costs
General consensus that parts and labor are expensive, especially for electronics and engine-out procedures.
- RecurrentSoftware and electronic issues (S6 e-tron)
Numerous software glitches requiring multiple service visits, though not necessarily impacting drivability.
+ 4 more issuesShow fewer
- RecurrentCarbon buildup (C6 V10 models)
Leads to rough running and performance issues, particularly noted on 2007-2008 models.
- RecurrentTransmission shifting problems (C7 models, 2013-2016)
Jerky or delayed shifting, addressed via software updates. Requires regular DSG/S-Tronic fluid service.
- RecurrentElectric power steering rack failures
High failure rates reported on newer Audi models, leading to expensive repairs.
- IsolatedAir suspension failure
Struts and related components can fail at high mileage (around 200,000 km / 124,000 miles), leading to costly repairs.
The version owners recommend
Insufficient owner data available to declare a consensus "best" version. For the C7 generation (4.0T), there is a strong emphasis on purchasing a vehicle with a comprehensive extended warranty that explicitly covers the turbochargers. For the newest S6 e-tron, the Sportback body style is praised for its practicality and design. Trims with the sports handling package (on related SQ7 models) and comfort seats with ventilation/massage are highly recommended by individual owners for significantly improving the driving experience and long-distance comfort.
Competitors to consider
Owners compare it most often with the BMW 550i xDrive, BMW M5, Mercedes-Benz E53 AMG, Porsche Taycan and Audi SQ7.
Is the S6 right for you?
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Full owner reportHide full owner report
Overall sentiment
Sentiment is mixed and heavily dependent on the specific generation and powertrain. For the C7 generation (approximately 2013-2018) with the twin-turbo 4.0L V8 (4.0T), the vehicle is widely praised for its potent performance, refined luxury, and high-speed cruising capability, described as stable and quiet even at high speeds (e.g., 155 mph / 250 km/h). However, this generation is overshadowed by a very frequent and severe concern regarding catastrophic turbocharger failure, linked to oil screen design flaws, which can lead to engine destruction and extremely high repair costs. For the C5 generation (approximately 2002-2003) with the 4.2L V8 and the C6 generation (approximately 2007-2010) with the 5.2L V10, feedback is more sparse but indicates they are viewed as fun, powerful, and relatively bulletproof aside from known issues like carbon buildup on the V10. The newest S6 e-tron generation receives initial positive remarks for its design, range, and value compared to competitors, but early adopter reports mention numerous software-related service issues. Across all generations, the S6 is appreciated as a comfortable, powerful, and practical luxury sedan or avant (wagon), but ownership is characterized by an acute awareness of potential major mechanical or electrical expenses.
Positioning vs competitors
Positioned as a comfortable, powerful luxury sedan/avant that blends performance with practicality, often for commuting professionals with families. It is frequently compared to the BMW 5-series and Mercedes E-Class equivalents, with some owners noting the BMW may be sportier while the Audi prioritizes comfort and all-weather capability. The S6 is seen as offering a more understated and elegant aesthetic compared to more overtly sporty rivals. Within the Audi lineup, it is considered a step below the RS6 in performance but significantly more affordable, and is often cross-shopped with the larger S8 for similar powertrain characteristics. The new S6 e-tron is positioned as a high-value alternative to the Porsche Taycan, offering similar EV performance and practicality at a lower cost, albeit with first-generation teething issues.
Recommended configurations
For C7 V8 models: A comprehensive extended warranty is considered essential. A thorough pre-purchase inspection focusing on turbocharger health and service history is mandatory. For newer e-tron models: The sportback for added utility. Comfort seats with ventilation are recommended for long-distance comfort. An L2 home charger is recommended to maximize convenience and range.
General recommendations
Suitable for buyers who prioritize a blend of luxury, comfort, and strong performance, and who are financially prepared for potential high-cost repairs. Strongly recommended for purchasers of the C7 4.0T V8 to secure a warranty that explicitly covers turbocharger failure. Not recommended for those with low tolerance for repair costs or reliability concerns. For used models, purchasing from an Audi dealership with full service history is preferred over independent lots sourcing from auctions. For the new S6 e-tron, expect initial software-related issues but appreciate the strong range and charging capability. Always verify maintenance records, especially for transmission services (S-Tronic/DSG) and engine oil changes.
Remarks
The turbocharger issue on the C7 S6 (and related 4.0T models like S7, S8) is the dominant topic in owner discussions, creating a significant dichotomy between the car's praised driving experience and the fear of a financially ruinous failure. This has led to a strong market for aftermarket solutions (e.g., serviceable oil line kits) and made an extended warranty a near-universal recommendation. The V10-powered C6 S6 is noted for its character but is a much rarer vehicle with less available feedback. The new S6 e-tron represents a fundamental shift to electric propulsion, with early feedback focusing on its value proposition and next-generation platform benefits (PPE), tempered by expected first-model-year software issues. Analysis based on discussions covering the C5, C6, C7, and next-generation e-tron models.
Generation by generation
Owner insights per generation and US complaint/recall records (NHTSA).
S6 (C8)2019–202510 complaints · 13 recallshigh confidenceRead report
Most-reported areas (NHTSA): electrical system (8) · engine (3) · structure (2)
Our take, from owner reports
Owners of the C8 S6 broadly praise the car's power delivery, describing it as feeling like a jet and faster than advertised, with the electric supercharger and 48V mild hybrid system credited for eliminating turbo lag.
7 problems reported (1 recurrent, 6 isolated) · high confidence
Problems owners report
- RecurrentSoftware issues with the 2025 model year's new entertainment system
Described as nothing but problems and a lot.
- IsolatedFaulty ECM requiring replacement, with the part on back order and no ETA
- IsolatedFaulty N80 purge valve
+ 4 more issuesShow fewer
- IsolatedAC blowing hot air with a hissing noise
- IsolatedWater pump failure leaking coolant into and contaminating vacuum lines
Requiring two weeks at the dealer to clean.
- IsolatedExcessive and annoying start/stop functionality from the mild hybrid system
- IsolatedUnreliable touchscreen interface
Is a 2019–2025 S6 right for you?
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S6 (C7)2012–201895 complaints · 13 recallshigh confidenceRead report
Most-reported areas (NHTSA): engine (67) · power train (13) · electrical system (8)
Our take, from owner reports
Owners of the C7 S6 describe it as a fast, luxurious, and discreet performance sedan that is genuinely thrilling when it is working, with praise centered on the 4.0 twin-turbo V8's power delivery, the chassis and sport differential, the diamond-stitched seats, and the car's understated "body builder in a tailored tuxedo" character.
16 problems reported (3 very frequent, 8 recurrent, 5 isolated) · high confidence
Problems owners report
- Very frequentTurbocharger failure, often both turbos, sometimes at 25k-60k miles
- Very frequentThermostat failure
- Very frequentOil separator / PCV failure
+ 13 more issuesShow fewer
- RecurrentTurbo coolant line and O-ring leaks
- RecurrentWater pump failure
- RecurrentOil screen blockage leading to turbo oil starvation
- RecurrentMotor mount leaking or failing
- RecurrentControl arm and bushing wear at higher mileage
- RecurrentJerky low-speed behavior from the dual-clutch transmission, especially in dynamic mode
- RecurrentCarbon buildup requiring cleaning at higher mileage
- RecurrentBeing left stranded by failures
- IsolatedFuel door getting stuck and needing a new actuator
- IsolatedFuel line rupturing
- IsolatedRear AC fan failure
- IsolatedAir suspension leak at a front strut
- IsolatedBrake caliper leak
Is a 2012–2018 S6 right for you?
Get an answer for your year, mileage and budget.
S6 (4F,C6)2006–20103 complaints · 4 recallshigh confidenceRead report
Most-reported areas (NHTSA): air bags (2) · seat belts (1)
Our take, from owner reports
Owners of the 2006-2010 S6 describe it as a labor of love: a naturally aspirated 5.2L V10 that sounds and performs unlike anything else, wrapped in a car that is expensive and demanding to maintain.
18 problems reported (1 very frequent, 3 recurrent, 14 isolated) · high confidence
Problems owners report
- Very frequentCarbon buildup on intake valves requiring walnut blasting
- RecurrentIntake manifold flaps breaking or sticking, sometimes requiring manifold replacement or gutting
- RecurrentOil leaks, including from camshaft solenoid O-rings and valve cover gaskets
+ 15 more issuesShow fewer
- RecurrentExpensive engine-out repair bills for major engine work
- IsolatedTiming chain noise
- IsolatedInjector failure requiring replacement of ten injectors
- IsolatedOxygen sensor failure requiring engine removal to replace
- IsolatedAC compressor concerns, complicated by being chain-driven
- IsolatedAdaptive headlight motors not working
- IsolatedIgnition key breaking off in the ignition
- IsolatedFuel sensor or fuel pump causing intermittent cutting out
- IsolatedMisfires traced to faulty flap actuators
- IsolatedStarter failure preventing cranking
- IsolatedElectrical gremlins at this age
- IsolatedTransmission fluid service overlooked due to "lifetime" rating
- IsolatedFront crash sensor failure
- IsolatedSuspension wear requiring replacement, with OEM DRC being very costly
- IsolatedBrake costs described as very expensive
Is a 2006–2010 S6 right for you?
Get an answer for your year, mileage and budget.
Complaints and recalls by model yearWorst year: 2013. Years to avoid: 2016, 2014, 2013Source: NHTSA (US)Show table
Each year graded against the model's other years: Year Score. See all Audi S6 years to avoid
| Year | Complaints | Recalls | Most-reported area |
|---|---|---|---|
| 2025 | 4 | 3 | electrical system |
| 2022 | 4 | 4 | electrical system |
| 2020 | 2 | 6 | electrical system |
| 2018 | 4 | 1 | steering |
| 2017 | 5 | 2 | engine |
| 2016 | 19 | 2 | engine |
| 2015 | 5 | 2 | engine |
| 2014 | 20 | 3 | engine |
| 2013 | 42 | 3 | engine |
| 2010 | 1 | 2 | air bags |
| 2008 | 2 | 2 | air bags |
| 2003 | 2 | 2 | fuel system |
| 2001 | 1 | 1 | air bags |
| 1997 | 1 | 0 | fuel system |
Complaint counts come from owner reports filed with the US National Highway Traffic Safety Administration. Higher-selling years naturally accumulate more complaints.
Recall notices34 on record · Source: NHTSA (US)Show recalls
2025 · back over prevention: sensing system: cameracampaign 25V900000
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
2025 · seat belts:front:retractorcampaign 25V638000
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2025 GTI, Golf R, Audi A5, A6 Sportback E-Tron, S5, S6 Sportback E-Tron, 2026 Q4 Sportback E-Tron, and Q4 E-Tron vehicles. The torsion bar in one or both front seat belt retractors may have been damaged during production.
2025 · seat belts:rear/other:retractorcampaign 25V899000
Volkswagen Group of America, Inc. (Audi) is recalling certain 2025 SQ6 E-Tron, SQ6 Sportback E-Tron, Q6 Sportback E-Tron, A6, A5, A6 Sportback E-Tron, Q6 E-Tron, S5, and S6 Sportback E-Tron vehicles. The automatic locking retractor may fail to engage when a child seat is installed using the seat belt. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 208, "Occupant Crash Protection" and 209, "Seat Belt Assemblies."
2022 · equipment:electrical:infotainment:video (touch)screen/monitor/unitcampaign 22V806000
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 AUDI A8, A6 Allroad, E-TRON Quattro, 2022 S3, RSQ8, RS7, RS6 Avant, Q8, Q7, Q3, E-TRON Sportback Quattro, S5 Cabriolet, E-TRON GT, S5 Sportback, A7, A6, A5 Sportback, A5 Cabriolet, A4, A4 Allroad, A3, S8, SQ7, SQ8, S6, and S4 vehicles. The infotainment main unit may become damaged internally when the vehicle is shut off, resulting in an inoperative rearview camera display the next time the vehicle is started. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
2022 · electrical systemcampaign 22V861000
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.
2022 · electrical system:instrument panel:fuel gauge:fuel level float/sensor/sending unitcampaign 22V155000
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.
2022 · back over prevention: sensing system: cameracampaign 25V900000
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
2020 · tirescampaign 22V034000
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, SQ5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, RS7, RSQ8, SQ5 Sportback, SQ7, and SQ8 vehicles. The rear axle alignment may not have been inspected after the repairs for Recall 21V-295 (42L1) were performed.
2020 · air bagscampaign 21V159000
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.
2020 · suspension:rear:axle:non-powered axle assemblycampaign 21V295000
Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2019-2021 RS5 coupe, A5 Sportback, S5 Sportback, RS5 Sportback vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion.
2020 · electrical system:instrument panel:fuel gauge:fuel level float/sensor/sending unitcampaign 22V155000
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.
2020 · electrical systemcampaign 22V861000
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.
2020 · back over prevention: sensing system: cameracampaign 25V900000
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
2018 · air bags:sensor:occupant classificationcampaign 18V370000
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.
2017 · air bags:sensor:occupant classificationcampaign 18V370000
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.
19 older recalls not shown. Check nhtsa.gov with your VIN for the full history.
Specifications
Enthusiast code: C8
2.9 TFSI V6 Mild Hybrid quattro
2.9L 6-cylinder · 444 hp · AWD · automatic
Built 2023–2025