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Audi S7 4.0 TFSI quattro common faults.

2012–2014, hatchback, petrol, 420 HP.

The fault list covers: CEUC engine, DL501 transmission.

What you save stays on this device only. My saves

3 fault write-ups. All are important. 8 recalls.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

3 important faults

critical1

3.0 TFSI: drone from the supercharger front bearing

critical

The front bearing of the mechanical supercharger on the 3.0 TFSI, the nose bearing, wears, and over the years and the kilometres it drones louder and louder, but only under load. If the bearing seizes, the supercharger is destroyed inside. You will not hear the noise with the engine idling, so the test drive has to include a firm acceleration.

What to check

  • Accelerate firmly from 60 to 120 with the window open
  • Watch for a drone from the engine bay that rises together with the revs
  • It is not audible at idle: do not look for it there
1 more steps in the write-up

expensive2

4.0 TFSI V8: the membrane of the crankcase breather module lets pressure through

expensive

The crankcase breather module keeps the pressure inside the engine at the right level with a membrane. On this V8 the membrane lets pressure through, and from then on the intake draws air and oil vapour out of the engine without regulation. The audible sign is a metallic whistling or grinding noise from the engine bay at idle, which typically only comes when the engine is warm, while the engine warning light is sporadically on. The engine control unit stores P2279 for an intake system leak and P0507 for a raised idle. The oil reaching the intake increases oil consumption, gives blue smoke under load, and leaves an oily film inside the intercooler. In March 2016 Audi issued a service bulletin for this (17-16-70) and named the 2013 to 2016 A6, A7 and A8 with the 4.0 TFSI engine. The factory solution is a fabric-reinforced inner membrane, meaning the breather module is replaced. The module sits between the two cylinder banks, under the intake, so the job also needs the coolant drained, and the replacement costs between 400 and 1,800 euro. The problem is reported above 100,000 km.

above 100,000 km400–1,800 EUR

What to check

  • With a warm engine at idle listen for the metallic whistling noise from the engine bay
  • With the engine running open the oil filler: if the noise changes, the breather is the suspect
  • Read the fault memory and look for the P2279 and P0507 codes
2 more steps in the write-up

DL501 (7 speed S tronic): mechatronics and wet clutch

expensive

The 7 speed wet clutch S tronic used in the longitudinal engine Audis (0B5 / DL501) is more durable than the early DSG units, but the mechatronics unit is the most common source of faults here too. As the solenoids wear, the regulation of the hydraulic pressure deteriorates: harsh or missed shifts, delayed D/R engagement, and finally limp mode.

Show the rest

Alongside that, wear of the clutch pack gives shuddering and slipping when pulling away, and the dual mass flywheel rattles at idle. All three symptoms can appear together, and the fault code alone does not tell you which one is the trigger.

What to check

  • Pull away with a cold gearbox: there should be no shuddering and no clutch slip when setting off
  • Standing still, shift between D and R and watch the engagement delay: a 1 to 2 second hesitation is suspect
  • On the test drive go slowly through every gear, then under load too: the 2 to 3 shift should be smooth
2 more steps in the write-up

Checklist

Audi S7 4.0 TFSI quattro

First what you would check on any car. Then the faults of this model.

Before you buy

Checklist

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On every car

Ask the owner

Faults of this model

vinkodex.com · Before you buy it, see what can go wrong.

Official recall8 recallsShow

The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done.

Most recent: 4 June 2018

18V370000AIR BAGS:SENSOR:OCCUPANT CLASSIFICATIONAIR BAGS:SENSOR:OCCUPANT CLASSIFICATION4 June 2018 · NHTSA (USA)

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.

Risk: 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.

The authority's notice

17V781000FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGSFUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS6 December 2017 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2012-2014 Audi A6 and A7 vehicles. The fuel line has a compression point that can weaken, potentially resulting in a fuel leak.

Risk: A fuel leak in the presence of an ignition source, increases the risk of a fire.

Remedy: Audi will notify owners, and dealers will replace the fuel line, free of charge. The recall began February 5, 2018. Owners may contact Audi customer service at 1-888-237-2834. Volkswagen's number for this recall is 20AR.

The authority's notice

16V646000FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGSFUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS7 September 2016 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2012-2013 Audi A6 and Audi A7 vehicles. The affected vehicles have a fuel hose in the engine compartment that may degrade and leak fuel.

Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.

Remedy: Audi will notify owners, and dealers will replace the under hood fuel pump and fuel hose, free of charge. The recall began November 2016. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 24BZ.

The authority's notice

15V823000AIR BAGS:SENSOR:OCCUPANT CLASSIFICATIONAIR BAGS:SENSOR:OCCUPANT CLASSIFICATION8 December 2015 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2012-2013 Audi A6 vehicles manufactured March 28, 2011, to March 25, 2013, and 2012-2013 Audi A7 vehicles manufactured January 25, 2011, to March 19, 2013. In vehicles with heated and cooled seats, the Passenger Occupant Detection System (PODS), used to enable the front passenger air bags, may malfunction and prevent the passenger-side air bags from deploying in a crash.

Risk: An air bag that does not deploy as intended increases the risk of occupant injury in a crash.

Remedy: Volkswagen will notify owners, and Audi dealers will install a PODS system repair kit, free of charge. The recall began on February 5, 2016. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 74D1.

The authority's notice

15V019000FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAILFUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL20 January 2015 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2011-2012 Audi S4, S5, Q7, 2012 Audi A6, Volkswagen Touareg Hybrid, and 2012-2013 Audi A7 vehicles. In the affected vehicles the fuel injection system may experience a fuel leak.

Risk: A fuel leak in the injection system in the presence of an ignition source, increases the risk of a fire.

Remedy: Volkswagen will notify owners, and dealers will replace the fuel rails and corresponding seals, free of charge. The recall began on March 17, 2015. Owners may contact Audi customer service at 1-800-822-2834 or Volkswagen customer service at 1-800-893-5298. Volkswagen's numbers for this recall are 24AP for Audi customers and 24BK for Volkswagen customers.

The authority's notice

A12/0382/19Safety recallFireno date · EU Safety Gate

In certain vehicles, fuel can leak onto the engine fuel rail. Fuel leakage close to a source of ignition may increase the risk of the vehicle catching fire.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/0713/17Safety recallFireno date · EU Safety Gate

The additional coolant pump can block due to foreign particles in the cooling system. This can result in the pump overheating which could lead to a fire.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/0942/18Safety recallFireno date · EU Safety Gate

The auxiliary coolant pump may seize up. This could lead to the pump overheating after the engine has been switched off with the risk that the vehicle could catch fire.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

Engine and transmission

CEUC · 4.0 TFSI (S7)

309 kW (420 HP) · petrol

DL501 · 7-speed S tronic, longitudinal

DSG · 7 speed

Clutcholajfürdős
Torque limit550 Nm
MakerAudi

We built the code from the model and the gear count. The factory sheet does not state it.

Variant data

What is in this version

Factory data

Trim
quattro
Body
hatchback
Fuel
petrol
Transmission
automatic
Engine size
3993 cc
Power
309 kW (420 HP)
Drive
AWD
Production
2012–2014

Factory service interval

The manufacturer specifies this for this version. Of the mileage and the time, the one that comes first is the one that counts.

  • Air filter

    • 60,000 km or 4 years

  • Cabin (pollen) filter

    • 30,000 km or 2 years

  • Engine oil and oil filter

    • LongLife30,000 km or 2 years(valid only with LongLife-approved oil)
    • 15,000 km or 1 year

  • Brake fluid change

    • first: 3 years, then 2 years(first change at 3 years, then every two years)

  • DSG oil change, WET clutch gearbox

    • 60,000 km or 4 years

  • Coolant (antifreeze) change

    • first: 193,000 km or 10 years, then 97,000 km or 5 years(G13 / G12++: first change at 120,000 miles or 10 years, then every 60,000 miles or 5 years)

  • Spark plugs, petrol

    • 60,000 km or 6 years
All C7 versions

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms