Audi · Known Issues

2013 Audi S7 Problems: 4 Known Issues

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

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2013 Audi S7 has 4 documented known issues, with 3 rated critical. The most serious are 4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6), Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5) and Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7). DIY maintenance guides at au7o.io.

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 Audi S7 has 4 documented issues. The most frequently reported are: 4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6), Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5), Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7). Of these, 3 are rated critical and should be addressed promptly.

Is the Audi S7 reliable?

The 2013 Audi S7 has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 3 issues are rated critical: 4.0L Fuel Line Can Leak and Create a Fire Risk (Recall 13V450 / 20U6) and Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5) and Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7). 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.

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

On certain 2013-2018 S7 vehicles with basic front seats, stress or wear in the body-sensing mat can make the passenger occupant-detection system malfunction and prevent proper airbag deployment. Severity: high.

What is the 2013-2017 Audi S7 Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7)?

On certain 2013-2017 S7 vehicles, the turbocharger oil-supply strainer can block, starve the turbo bearings, and allow the shaft or turbine to fail, potentially stalling the engine. Severity: high.

What is the 2013-2016 Audi S7 4.0 TFSI Crankcase Breather Leak With Warm-Idle Whistle (TSB 2040644/3)?

Audi TSB 2040644/3 covers 2013-2016 S7 4.0 TFSI vehicles with a warm-idle metallic whistle or grinding sound, an intermittent MIL, and P2279 or P0507 caused by a leaking crankcase-breather pressure-regulating valve. Severity: medium.

2013 Audi S7 Problems: 4 Known Issues

All 4 Known Issues

2013-2017 Audi S7: Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7)#

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2013-2016 Audi S7: 4.0 TFSI Crankcase Breather Leak With Warm-Idle Whistle (TSB 2040644/3)#

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

Common Symptoms

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2013-2018 Audi S7: Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5)#

Common Symptoms

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Other Audi Models

Frequently Asked Questions

What are the most common Audi S7 problems?

Is the Audi S7 reliable?

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

What is the 2013-2018 Audi S7 Passenger Occupant Detection Mat Can Disable the Airbag (Recall 18V370 / 74D5)?

What is the 2013-2017 Audi S7 Turbocharger Oil-Supply Strainer Can Block and Cause Engine Stall (Recall 22V178 / 21H7)?

What is the 2013-2016 Audi S7 4.0 TFSI Crankcase Breather Leak With Warm-Idle Whistle (TSB 2040644/3)?