What is the 2013-2014 Audi S7 4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6)?

Certain 2013-2014 S7 vehicles with the 4.0L engine can develop a fuel-line leak because of manufacturing tolerances, creating a fire risk near an ignition source. Severity: high.

What is the 2013-2018 Audi S7 S-tronic 7-Speed Dual-Clutch (DL501/0B5) Mechatronic and Clutch Wear?

EU-spec C7 S7s paired the 4.0T with the 7-speed S-tronic dual-clutch transmission (DL501 / 0B5). Owners report clutch judder/shudder when pulling away from a standstill, hesitation and jerky low-speed shifts, and in severe cases loss of drive. The dominant failure modes are mecha… Repairs typically run $1,500-$6,000. Severity: high.

What is the 2013-2018 Audi S7 Turbocharger Wastegate Linkage Rattle and Underboost (4.0T V8)?

The 4.0T's two turbochargers sit in the 'hot-V' between the cylinder banks, where trapped heat coks oil and wears the turbo bearings and wastegate hardware over time. A very common failure is wastegate-linkage wear: the hole in the wastegate arm where the actuator peg sits elonga… Repairs typically run $3,000-$9,000. Severity: high.

What is the 2020-2022 Audi S7 Rear-Seat Liquid Spill Can Shut Down Gateway Module (Recall 22V861 / 90V2)?

On certain 2020-2022 S7 vehicles, liquid spilled in the rear seat can reach the gateway control module, shut it down, and suddenly reduce engine power. Severity: high.

What is the 2020-2021 Audi S7 Rear-Axle Lock Nut and Alignment Recall Follow-Up (21V295 / 22V034)?

Certain 2020-2021 S7 rear trailing-arm lock nuts can fracture from stress corrosion and misalign the rear axle. A follow-up recall covers vehicles whose alignment and tire condition may not have been checked after the first repair. Severity: high.

What is the 2020-2024 Audi S7 Rearview Camera Image May Not Display (Recall 25V900 / 90TV)?

Within the official 25V900 Part 573 model scope, certain 2020-2024 S7 vehicles can fail to display the rearview-camera image as intended because of a software error. Severity: high.

What is the 2021 Audi S7 Incorrect Brake-Fluid Reservoir Cap Label (Recall 23V601 / 47T9)?

Certain 2021 S7 vehicles may have an incorrectly labeled brake-fluid reservoir cap, which can lead to use of the wrong fluid and reduced braking ability. Severity: high.

What is the 2013-2018 Audi S7 Front Control Arm Bushing and Ball Joint Failure (C7 Suspension)?

Separate from the adaptive air-suspension struts, the C7 S7's multi-link front suspension uses several aluminum control arms whose rubber bushings and ball joints are common wear items. Failures are widely reported between 70k-100k miles (and sometimes as early as 30k-40k on hard… Repairs typically run $900-$2,500. Severity: medium.

What is the 2013-2018 Audi S7 PCV / Oil Separator (Ölabscheider) Failure Causing Oil Consumption and Whistling (4.0T V8)?

On the C7/C7.5 S7's 4.0T TFSI (EA824) V8, the PCV valve integrated into the oil separator is a high-failure item. The diaphragm fails and the crankcase ventilation system loses its ability to regulate pressure, leading to elevated oil consumption (often 1 quart per ~500-1000 mile… Repairs typically run $400-$1,200. Severity: medium.

What is the 2013-2022 Audi S7 Premature Front Brake Rotor Warping and Pad Wear?

Owners of the heavy A7/S7 frequently report premature front brake wear and rotor warping, with some replacing front rotors multiple times in well under 50k miles. The OEM rotors are relatively soft and reach minimum thickness after roughly one pad set, and uneven pad engagement l… Repairs typically run $600-$1,800. Severity: medium.

What is the 2013-2018 Audi S7 Rear Differential Mount and Driveshaft Center Bearing Wear Causing Drivetrain Clunk (C7)?

Distinct from the engine motor mounts, the C7 S7's quattro driveline develops play as the rear differential mount and driveshaft center support bearing age. The factory rear diff mount has large voids in its rubber, allowing excessive differential movement under load that produce… Repairs typically run $400-$1,600. Severity: medium.

What is the 2013-2018 Audi S7 Fuel Injector Deposits / Failure Causing Misfire and Rough Running (4.0T V8)?

The direct-injection 4.0T TFSI is prone to injector-related driveability faults: clogged or leaking injectors and injector-seal failures cause random/multi-cylinder misfires, rough idle, a rich-running condition, and hesitation. German A7/S7 reliability guides list injector damag… Repairs typically run $500-$2,500. Severity: medium.

What is the 2013-2018 Audi S7 Sunroof / Panoramic Roof Drain Clog Causing Water Intrusion and Electronics Damage (C7)?

The C7 S7's sunroof drainage channels route water down through the A- and C-pillars to exit beneath the car. The drain tubes clog with debris, and the snap-fit connector where the tube attaches to the sunroof frame can loosen as its bonding ages, so water overflows into the cabin… Repairs typically run $0-$800. Severity: medium.

What is the 2013-2018 Audi S7 Ignition Coil Pack Failure Causing Misfires (4.0T V8)?

The eight individual coil-on-plug ignition coils on the 4.0T V8 are a recurring misfire source as they age, especially on tuned cars where higher cylinder pressures stress the spark. A failing coil produces a cylinder-specific misfire (P030X) and a flashing or steady check engine… Repairs typically run $350-$900. Severity: medium.

What is the 2013-2022 Audi S7 Power Liftgate Motor and Gas Strut Failure (Sportback Tailgate)?

The S7's large Sportback hatch uses a power liftgate driven by spindle/lift motors and supported by gas struts. Over time the gas struts lose pressure and the motors wear, so the hatch opens slowly or struggles, opens a few inches and stops, won't stay up (slowly drifting closed… Repairs typically run $250-$1,200. Severity: low.

Audi · Known Issues

2013-2024 Audi S7 Problems: 22 Known Issues

2013-2024 model years · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026

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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2013-2024 Audi S7 has 22 documented known issues, with 12 rated critical. The most serious are 4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6), Rear Seat-Belt Retractor Can Release a Child Restraint Early (Recall 21V606 / 69CS), Instrument Panel May Fail to Display Critical Safety Information (Recall 25V201 / 90VC), High-Pressure Fuel Pump (HPFP) Failure Causing Hard Start and Power Loss (4.0T V8) ($700-$2,200 repair), S-tronic 7-Speed Dual-Clutch (DL501/0B5) Mechatronic and Clutch Wear ($1,500-$6,000 repair), Turbocharger Wastegate Linkage Rattle and Underboost (4.0T V8) ($3,000-$9,000 repair), Rear-Seat Liquid Spill Can Shut Down Gateway Module (Recall 22V861 / 90V2), Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5), Rear-Axle Lock Nut and Alignment Recall Follow-Up (21V295 / 22V034).

Frequently Asked Questions

What are the most common Audi S7 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2013-2024 Audi S7 has 22 documented issues. The most frequently reported are: 4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6), Rear Seat-Belt Retractor Can Release a Child Restraint Early (Recall 21V606 / 69CS), Instrument Panel May Fail to Display Critical Safety Information (Recall 25V201 / 90VC). Of these, 12 are rated critical and should be addressed promptly.

Is the Audi S7 reliable?

The 2013-2024 Audi S7 has 22 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 12 issues are rated critical: 4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6) and Rear Seat-Belt Retractor Can Release a Child Restraint Early (Recall 21V606 / 69CS) and Instrument Panel May Fail to Display Critical Safety Information (Recall 25V201 / 90VC) and High-Pressure Fuel Pump (HPFP) Failure Causing Hard Start and Power Loss (4.0T V8) and S-tronic 7-Speed Dual-Clutch (DL501/0B5) Mechatronic and Clutch Wear and Turbocharger Wastegate Linkage Rattle and Underboost (4.0T V8) and Rear-Seat Liquid Spill Can Shut Down Gateway Module (Recall 22V861 / 90V2) and Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5) and Rear-Axle Lock Nut and Alignment Recall Follow-Up (21V295 / 22V034) and Rearview Camera Image May Not Display (Recall 25V900 / 90TV) and Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7) and Incorrect Brake-Fluid Reservoir Cap Label (Recall 23V601 / 47T9). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Audi S7 problems?

Repair costs for known Audi S7 issues range from $0 to $9,000, 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 year Audi S7 is the most reliable?

Reliability varies across model years of the Audi S7. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2013-2024 Audi S7 with 22 documented issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports.

All 22 Known Issues

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Frequently Asked Questions

What are the most common Audi S7 problems?

Is the Audi S7 reliable?

How much does it cost to fix common Audi S7 problems?

What year Audi S7 is the most reliable?

Rear Seat-Belt Retractor Can Release a Child Restraint Early (Recall 21V606 / 69CS)#

Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5)#

Rearview Camera Image May Not Display (Recall 25V900 / 90TV)#

Turbocharger Wastegate Linkage Rattle and Underboost (4.0T V8)#

Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7)#

PCV / Oil Separator (Ölabscheider) Failure Causing Oil Consumption and Whistling (4.0T V8)#

Fuel Injector Deposits / Failure Causing Misfire and Rough Running (4.0T V8)#

Ignition Coil Pack Failure Causing Misfires (4.0T V8)#

Instrument Panel May Fail to Display Critical Safety Information (Recall 25V201 / 90VC)#

Rear-Seat Liquid Spill Can Shut Down Gateway Module (Recall 22V861 / 90V2)#

Rear-View Camera / MMI Flex Harness Black Screen#

Shark-Fin Roof Antenna Water Intrusion Causing GPS / Satellite Radio Reception Loss (C7)#

4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6)#

High-Pressure Fuel Pump (HPFP) Failure Causing Hard Start and Power Loss (4.0T V8)#

Rear-Axle Lock Nut and Alignment Recall Follow-Up (21V295 / 22V034)#

Front Control Arm Bushing and Ball Joint Failure (C7 Suspension)#

Incorrect Brake-Fluid Reservoir Cap Label (Recall 23V601 / 47T9)#

Premature Front Brake Rotor Warping and Pad Wear#

S-tronic 7-Speed Dual-Clutch (DL501/0B5) Mechatronic and Clutch Wear#

Sunroof / Panoramic Roof Drain Clog Causing Water Intrusion and Electronics Damage (C7)#

Power Liftgate Motor and Gas Strut Failure (Sportback Tailgate)#

Rear Differential Mount and Driveshaft Center Bearing Wear Causing Drivetrain Clunk (C7)#