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Audi Q3 40 TFSI quattro common faults.

2018–2025, SUV, petrol, 190 HP.

The fault list covers: DKTC engine, DQ381 transmission.

What you save stays on this device only. My saves

9 fault write-ups. 5 important. 13 recalls.

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

Before you buy

Known faults

5 important faults

expensive5

The drain channels of the panoramic roof block up or crack, water runs into the cabin, the carpet soaks through, and the electronics in the floor get wet too. It shows up on cars built between 2019 and 2021. A car without a roof is not affected, but a listing does not always say whether a roof was fitted, so you have to look.

What to check

  • Check whether the car has a panoramic roof at all
  • Pour water into the four corners of the roof, and see where it drains underneath
  • Lift the front and rear carpets and feel the foam
2 more steps in the write-up

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.

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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

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

The crankcase ventilation (PCV) of the third generation 1.8/2.0 TSI fails less often than its predecessors, but it is not faultless. After sustained full load acceleration, under hard braking, the return branch of the ventilation can be overloaded, and the oil ends up in the intake instead of draining. The symptoms are oil consumption, blue smoke after load, and deposits in the intake.

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This also reinforces the other, already known phenomenon: because of the direct injection, the coke building up on the intake valves grows faster with oil reaching the intake.

What to check

  • After a test drive under load, look at the exhaust: it should not smoke blue under hard braking after sustained acceleration
  • Ask about topping up between two oil changes: adding oil every 1,000 to 1,500 km is not normal
  • Look at the intake connections and the ventilation hose: oily deposits mean oil in the intake
1 more steps in the write-up

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

The most common complaint on the Q3 is the infotainment system: the touchscreen does not respond, dash warnings flicker, the system freezes, or a sensor is faulty. One survey found a fault of this kind on 44 per cent of Q3 cars, and half of the repairs spent more than a week in the workshop. A software update fixes many cases and the update is free, so before you buy, ask whether the latest version is installed.

What to check

  • Leave the system running for the whole test drive and watch for freezing
  • Try the parking sensors and the driver assistance systems
  • Restart the car several times: a fault after a cold start is characteristic
2 more steps in the write-up

cheap repair3

The crankcase breather carries the vapour that forms inside the engine back to the intake, and a rubber membrane regulates the pressure. Oil and heat harden this membrane until it tears, and from then on the intake draws air through the hole in it. The engine control unit does not measure that air, so the mixture goes wrong: the engine shakes at idle, stumbles when accelerating, and the fault memory gets P2279 for an intake system leak. In the other direction oil starts towards the intake, which leaves an oily film in the intercooler and on the intake pipe and speeds up the carbon build-up on the intake valves. The audible sign is a whistling or hissing noise from the engine bay, loudest at idle. The tear is reported between 60,000 and 90,000 km. On the first and second generation the breather is a separately replaceable valve (factory number 06H 103 495 AK) and costs between 80 and 400 euro; from the third generation it is built into the cam cover, so there the cover is replaced. The maker issued three versions up to 2016, and fitting the pressure variant that does not belong to the engine brings the same symptom back.

between 60,000 and 90,000 km80–400 EUR

What to check

  • At idle listen for a whistling or hissing noise from the engine bay
  • Read the fault memory and look for the P2279 code for an intake system leak
  • Take the air filter housing lid off and see whether there is an oily film on the filter and in the housing
2 more steps in the write-up

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

The per cylinder ignition coil of these direct injection, turbocharged petrol engines fails. According to the Haynes service material this and similar simple electrical faults account for roughly eighty per cent of workshop visits.

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In cold, damp weather, on startup, the engine runs unevenly, misfires under acceleration, and the engine warning light flashes or stays on. Do not keep driving with the light flashing: the unburnt fuel destroys the catalytic converter.

What to check

  • Start with a cold engine and watch the first half minute: a rough idle or shaking is suspect
  • On the test drive load the engine at low revs with a lot of throttle: the misfire shows then
  • A flashing engine warning light calls for stopping immediately
2 more steps in the write-up

Checklist

Audi Q3 40 TFSI 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

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

Official recall13 recallsShow

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

Most recent: 14 August 2026

SR/02351/26Safety recallInjuries14 August 2026 · EU Safety Gate

Due to irregularities in the manufacturing process, the seat belts may not be properly secured to the vehicle body. In such cases, the restraint effectiveness of the affected seat belts cannot be relied upon, 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: 14/08/2026

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

SR/02287/26Safety recallInjuries17 July 2026 · EU Safety Gate

A joint on the pyrotechnic gas generator in the front seat belt pretensioners may not have been properly welded. In the event of an accident, small parts could detach, increasing the risk of injury to passengers. 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: 17/07/2026

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

A12/00221/21Safety recallInjuriesno date · EU Safety Gate

Due to a manufacturing error, the belt-pulley securing ring of the steering system may not be fully engaged. As a result, the securing ring may become detached and subsequently jam with surrounding components, leading to possible locking of the steering system.

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

A12/00345/21Safety recallInjuriesno date · EU Safety Gate

Due to a manufacturing error, a weld joint between the brake pedal and the brake-pedal plate could break when the brake pedal is suddenly applied. This can result in complete detachment of the brake-pedal plate, increasing the risk of an accident.

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

A12/00541/22Safety recallBurns, Fireno date · EU Safety Gate

Design engine covers installed on all affected vehicles could detach from their fixings depending on the conditions of use (e.g. very sporty driving, or poor road surfaces) and their age. A loose engine cover could come into contact with the hot area of the exhaust gas turbocharger, increasing the risk of burns or fire. 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

A12/00667/22Safety 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

A12/00679/21Safety recallInjuriesno date · EU Safety Gate

The safety belt restraint system might only work to a limited extent in the event of sharp braking or lateral tilting of the vehicle. This will lead to an increased risk of injury.

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

A12/00879/20Safety recallInjuriesno date · EU Safety Gate

The breaking point for the release of the front passenger airbag in the console may not have been fabricated correctly. As a result, the airbag may not penetrate the console as required in the event of deployment. This will impair its restraining and protective functions, increasing the risk of an injury.

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

A12/01482/20Safety recallInjuriesno date · EU Safety Gate

The screw connection attaching the seat frame to the seat rail may not be correctly executed. As a result, it may fail in the event of an accident, increasing the risk of injury.

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

A12/02452/24Safety recallInjuriesno date · EU Safety Gate

The seat belt's retraction mechanism doesn't work properly. This may result in a loose roll and insufficient tension of the seatbelt, increasing the risk of an 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

A12/03031/23Safety recallInjuriesno date · EU Safety Gate

A defective welding seam on the front seat back frame can break in the event of an accident. As a result, the person sitting in the seat may hit their head on the B-pillar, 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

A12/1252/19Safety recallInjuriesno date · EU Safety Gate

The function control device of the Body Control Module (BCM) may be incorrectly configured. This may cause a malfunction of the front light-emitting diode (LED) turn signal lights (blinkers) without the required warning indicator (acoustic/optical), increasing the risk of an accident.

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

DKTC

140 kW (190 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
40 TFSI quattro
Body
SUV
Fuel
petrol
Transmission
automatic
Engine size
1984 cc
Power
140 kW (190 HP)
Drive
AWD
Production
2018–2025

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

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