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Audi S3 quattro common faults.

2020–2024, hatchback, petrol, 310 HP.

The fault list covers: DNFB engine, DQ381 transmission.

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6 fault write-ups. 4 important. 10 recalls.

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

Before you buy

Known faults

4 important faults

critical1

2.0 TSI (EA888 gen3): too little oil pressure at idle

critical

In these engines the oil pump is adjustable, and the factory setting deliberately keeps the oil pressure low at low revs to reduce the drag of driving it. At low revs the stock pump works at around 1.8 bar, up to 2 bar at most. With a warm engine at idle this can fall further, and values below 1 bar have been reported. The camshaft adjusters feel the low pressure first, because the oil pressure itself is what holds the adjuster in place: this is where the clacking noise heard at idle comes from. The chain tensioner follows, which the same pressure tensions, and the timing chain therefore wears faster. The reference values for this engine family are 2 bar at idle, 3 bar at 2,000 rpm and 4.5 bar at 4,000 rpm. The turbocharger and the camshaft are lubricated from the same circuit. A strengthened oil pump raises the idle pressure by about 20 per cent. Repairing the pump costs between 800 and 2,800 euro, and replacing a worn chain is a further 1,200 to 3,500 euro.

between 70,000 and 120,000 km800–3,500 EUR

What to check

  • With a warm engine at idle listen for the clacking noise from the camshaft adjusters
  • Read the fault memory and look for the camshaft timing codes P0011 and P0014
  • Ask whether the oil pressure was measured warm at idle, and what it was
2 more steps in the write-up

expensive3

DQ381 (7 speed wet DSG): mechatronics and clutch position sensor

expensive

The 7 speed, wet clutch DSG that replaced the DQ250 in the MQB models (0GC / DQ381) is vulnerable from the mechatronics side. Typical faults are a harsh 2 to 3 shift, delayed D/R engagement and limp mode; a fault in the clutch position sensors gives a separate group of codes.

Show the rest

The wet clutch is more durable than the dry one, but as it wears you get shuddering and slipping when pulling away: the revs flare and the acceleration does not follow.

What to check

  • Standing still on the brake, shift between D and R and watch the engagement time and any jolt
  • Try pulling away on a slope too: shuddering, or revving without pulling, points to clutch wear
  • On the test drive watch the 2 to 3 shift specifically, cold and warm
2 more steps in the write-up

EA888 (1.8 / 2.0 TSI): water pump and thermostat housing leak

expensive

The combined housing of the water pump and the thermostat is plastic, and it is bolted directly to the hot engine block. The many heat and cool cycles warp it, it becomes brittle, and then it develops a hairline crack: the fault is almost always the housing, not the pump itself. The signs are slowly disappearing coolant with no visible puddle, the coolant level light, a sweet smell from the engine bay, and later a pink stain under the car. The repair means replacing the pump and the housing together, and the intake manifold has to come off for it: 4 to 6 hours of work. It shows up on model years 2015 to 2025.

What to check

  • Check the level in the expansion tank, and ask whether it needs topping up
  • With a cold engine, smell the engine bay: a sweet smell means a coolant leak
  • Shine a light under the intake manifold, on the right side of the engine: dried or pinkish deposits
2 more steps in the write-up

FSI direct injection: intake valve coking

expensive

With direct injection the fuel does not wash the intake valves: the petrol goes into the cylinder, not behind the valve. The oil mist and soot arriving through the EGR and the crankcase ventilation therefore build up on the valve stem and head, and from 80,000 to 100,000 km they restrict the flow. Symptoms are hesitation, loss of power, a rough cold start and misfire. It is not a part failure: it is a consequence of the design, and therefore it comes back. Cleaning (walnut or dry ice blasting) helps for a few tens of thousands of kilometres.

What to check

  • After a cold start watch the idle: rough running and shaking point to coked valves
  • Under load at low revs watch for hesitation
  • With a code reader look for per cylinder misfire (P0300 to P0304)
1 more steps in the write-up

comfort1

MIB3 infotainment: freezing, restarting, black screen

comfort

On the MQB evo generation the MIB3 touchscreen freezes, restarts on its own, and sometimes stays black. In the What Car? survey, 59 per cent of 8Y A3 owners reported a fault, and 44 per cent of those concerned the infotainment. Volume and temperature are set on touch sliders instead of physical buttons, and if the system hangs you cannot adjust them while driving either.

Show the rest

The maker released several software updates. Many cases are resolved by them, but not all. The update is free and fault finding is not, so before you buy, check whether the latest version has been installed.

What to check

  • Switch the system on and let it run for at least 10 to 15 minutes during the test drive
  • Try everything: navigation, Bluetooth, phone mirroring, reversing camera, radio
  • Set the volume and the climate with the slider: does it hang, is the response delayed
2 more steps in the write-up

cheap repair1

DSG selector lever: failure of the P position switch

cheap repair

The dash shows "Error: Workshop! Only leave vehicle in position P" with an audible warning. The message appears in whatever language the car is set to, for example "Fehler: Werkstatt! Fahrzeug nur in Stellung P verlassen" in German.

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The message points at the gearbox, but the fault is not there. A tiny switch sits in the module under the selector lever and signals that the lever is in park (P). Its contact wears and can also burn. That makes the signal unreliable, and the car warns you. The fault codes appear as 617752, P173400 or B116229.

At first it is intermittent. Sometimes the message comes up, sometimes not, so a short test drive easily misses it. Later it becomes permanent, and the gearbox can drop into limp mode.

This fault looks more expensive than it is. The maker released a separate retrofit switch kit for it (5Q0713128A for the black module, 3Q0713128 for the white one), which can be fitted in half an hour. The kit costs 70 to 100 pounds. At a franchised dealer, however, the whole selector lever module sometimes gets replaced, which costs 626 to 1,000 pounds there. So the difference between the two routes is roughly tenfold.

The affected group is post 2013 MQB platform Volkswagen, Audi, Seat and Skoda cars with a DSG gearbox. The switch is in these gearboxes, because that is what these cars have in common. The part itself is not part of the gearbox but of the module under the lever.

What to check

  • Watch the dash after starting: the message is intermittent and can be missed on a short loop
  • Move the lever from P to D and back several times, then get out and lock the car
  • Ask whether the selector lever switch has been replaced already, and ask for the invoice
2 more steps in the write-up

Checklist

Audi S3 quattro

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

Before you buy

Checklist

The printed sheet starts with what you would check on any car. What you tick stays on this device only.

On every car

Ask the owner

Faults of this model

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

Official recall10 recallsShow

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

Most recent: 7 December 2022

22V901000EQUIPMENT:OTHER:LABELSEQUIPMENT:OTHER:LABELS7 December 2022 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2023 Audi S3, RS3, and A3 vehicles. The Safety Certification label on the B-pillar is missing weight capacity information. As such, these vehicles fail to comply with the requirements of 49 CFR Part 567, "Certification."

Risk: Missing weight information may result in unintentional overloading of the vehicle, increasing the risk of a crash.

Remedy: Audi dealers will install an overlay label, free of charge. Owner notification letters were mailed February 27, 2023. Owners may contact Audi's customer service at 1-800-253-2834. Audi's number for this recall is 50ZZ.

We could not check this: model year. The authority's notice

22V823000BACK OVER PREVENTION:DISPLAY FUNCTIONBACK OVER PREVENTION:DISPLAY FUNCTION2 November 2022 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2022 Golf R A8, Audi S3, RS3 Sedan, Q4 E-Tron SUV, A3 Sedan, and 2022-2023 Volkswagen Golf GTI, and ID4 vehicles. The rearview camera image may be blank or unresponsive when the vehicle is placed in reverse gear or when the park function is manually activated. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: An inoperative rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.

Remedy: Dealers will replace the rearview camera, free of charge. Owner notification letters were mailed to Audi owners February 14, 2023. Volkswagen owners will receive an owner notification letter once remedy parts become available. Owners may contact Volkswagen's customer service at 1-800-893-5298 and Audi's customer service at 1-800-253-2834. Volkswagen's numbers for this recall are (Volkswagen) 91EK and (Audi) 91EL.

We could not check this: model year. The authority's notice

22V652000AIR BAGS:FRONTALAIR BAGS:FRONTAL29 August 2022 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2022 Audi S3, A3, and RS3 vehicles. The front passenger air bag may have been folded incorrectly.

Risk: An incorrectly folded air bag can tear, prohibiting it from deploying properly during a crash, increasing the risk of an injury.

Remedy: Dealers will replace the front passenger air bag module, free of charge. Owner notification letters were mailed December 13, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Audi's number for this recall is 69DZ.

We could not check this: model year. The authority's notice

22V515000SEAT BELTS:PRETENSIONERSEAT BELTS:PRETENSIONER20 July 2022 · NHTSA (USA)

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2022 Audi S3 and A3 sedans. The retention force of the seat belt tensioner on the driver and front passenger seats may be inadequate to properly restrain the occupants during a crash.

Risk: Improperly restrained occupants have an increased risk of injury during a crash.

Remedy: Dealers will replace the driver and front passenger seat belt assemblies, free of charge. Owner notification letters were mailed November 15, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Audi's number for this recall is 68i2.

We could not check this: model year. The authority's notice

22V224000CHILD SEAT:VEHICLE LATCH ANCHORCHILD SEAT:VEHICLE LATCH ANCHOR6 April 2022 · NHTSA (USA)

Volkswagen Group of America, Inc. (Audi) is recalling certain 2022 A3 Sedan and S3 Sedan vehicles. The child seat anchorage fitting sleeves are incorrectly marked with a different symbol than the one described in the owner's manual. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, "Child Restraint Anchorage Systems."

Risk: An incorrectly marked child restraint anchorage may cause confusion during child seat installation, resulting in a child seat being improperly secured and increasing the risk of injury during a crash.

Remedy: Dealers will replace all four fitting sleeves, free of charge. Owner notification letters were mailed May24, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 72M7.

We could not check this: model year. The authority's notice

A12/01389/21Safety recallInjuries10 September 2021 · EU Safety Gate

The bolt of the pressure-input shaft situated between the electromechanical brake servo and the brake pedal may come loose. As a result, the mechanical connection between the brake pedal and the brake servo would no longer be guaranteed, increasing the risk of an accident. In the event of an emergency, the vehicle can be immobilised by activating the electronic parking brake. The product does not meet the requirements set out in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles

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: 10/09/2021

We could not check this: model year. The authority's notice

21V198000AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGERAIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER22 March 2021 · NHTSA (USA)

Volkswagen Group of America, Inc. (Audi) is recalling certain 2015-2020 Audi S3 Sedan, A3 Sedan, 2016-2018 A3 Etron, 2017-2020 RS3 Sedan, and 2015-2019 A3 Cabriolet vehicles. The passenger occupant detection system (PODS) may malfunction and switch off the passenger air bag even when the seat is occupied.

Risk: A deactivated passenger air bag increases the risk of injury during a crash.

Remedy: Dealers will replace the PODS sensor mat and update the PODS control module, free of charge. Owners letters were mailed December 23, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 69BY.

We could not check this: model year. The authority's notice

A12/00667/22Safety recallFire, Injuriesno date · EU Safety Gate

The fuse in the high-voltage (HV) system may have been produced with an insufficient amount of extinguishing sand. In the event of a short circuit in the high-voltage system, a voltage flashover could occur inside the vehicle and subsequently pose a risk of fire and injuries. The product does not comply with the Regulation on the approval and market surveillance of Motor Vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

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

We could not check this: model year. The authority's notice

A12/01247/22Safety recallInjuriesno date · EU Safety Gate

Deviations in the manufacturing process may result in either of the front seat belt reels not achieving full restraint, increasing the risk of injury in the event of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

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

We could not check this: model year. The authority's notice

A12/01381/22Safety recallInjuriesno date · EU Safety Gate

Improper folding of the airbag may impede the deployment of the passenger side airbag in the event of an accident. A rip could occur in the airbag leading to insufficient protection, increasing the risk of injury. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

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

We could not check this: model year. The authority's notice

Engine and transmission

DNFB

228 kW (310 HP) · petrol

DQ381 · 7-speed DSG, wet clutch

DSG · 7 speed

Clutchwet
Torque limit420 Nm
MakerVolkswagen

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
1984 cc
Power
228 kW (310 HP)
Drive
AWD
Production
2020–2024

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)

  • Haldex coupling: oil and filter

    • 64,000 km or 3 years(40,000 miles, or 3 years per the older VW documentation)

  • 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 8Y 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