The solenoids of the mechatronics unit wear out: slow or harsh shifting, then limp mode.
Applies to the transmission DQ250.
2014–2023. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

Damian B Oh / CC BY-SA 4.0
What to watch for
The list covers the generation, the engines and the transmissions. Once you pick the version, only the faults that apply to it stay.
The solenoids of the mechatronics unit wear out: slow or harsh shifting, then limp mode.
Applies to the transmission DQ250.
The 7 speed, wet clutch DSG that replaced the DQ250 in the MQB models (0GC / DQ381) is vulnerable from the mechatronics side.
Applies to the transmission DQ381.
The combined housing of the water pump and the thermostat is plastic, and it is bolted directly to the hot engine block.
Applies to the engine CJXG, DNFD, DNUF.
The crankcase ventilation (PCV) of the third generation 1.8/2.0 TSI fails less often than its predecessors, but it is not faultless.
Applies to the engine CJXG.
With direct injection the fuel does not wash the intake valves: the petrol goes into the cylinder, not behind the valve.
Applies to the engine DNFD, DNUF.
The crankcase breather carries the vapour that forms inside the engine back to the intake, and a rubber membrane regulates the pressure.
Applies to the engine CJXG.
Repair: 80–400 EUR
The dash shows "Error: Workshop!
Applies to the transmission DQ250, DQ381.
The per cylinder ignition coil of these direct injection, turbocharged petrol engines fails.
Applies to the engine CJXG.
The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done. The list covers the whole generation. We did not filter it by model year. Some apply only to a narrower production window.
Most recent: 3 April 2024
24V251000AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGERAIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER3 April 2024 · NHTSA (USA)Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2023 Audi S5 Cabriolet, A4 Allroad, Q5 Sportback, A3 Sedan, S5 Sportback, SQ7, TT Coupe, TT Roadster, RS5 Sportback, 2024 A8, E-Tron Quattro, E-Tron Sportback Quattro, Q8, RSQ8, 2023-2024 Q3, Q5, and Q7 vehicles. An electrical connection in the front passenger seat for the occupant detection system (ODS) control module may loosen and deactivate the front passenger air bag.
Risk: A deactivated front passenger air bag will not deploy during a crash, increasing the risk of injury.
Remedy: Dealers will replace the passenger seat occupant detection system control module, free of charge. Owner notification letters were mailed on May 8, 2024. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 69GU.
20V076000FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLYFUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY12 February 2020 · NHTSA (USA)Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2016-2019 Audi TT Roadster Quattro and TT Coupe Quattro vehicles. In the event of a crash, the fuel tank may become damaged by the fuel tank heat shield bracket .
Risk: A damaged fuel tank may leak fuel, increasing the risk of a fire.
Remedy: Volkswagen will notify owners, and dealers will install a protective cap on the fuel tank heat shield bracket, free of charge. The recall began March 19, 2020. Owners may contact Volkswagen customer service at 1-800-893-5298. Volkswagen's number for this recall is 20BX.
8S · 2014–2023
The fault list opens on the version page.
16 versions
2.0 l · 1984 cm³
DNUF · DQ381
quattro
2019–2023 · quattro
2.0 l · 1984 cm³
DNUF · DQ381
quattro
2019–2023 · quattro
2.0 l · 1984 cm³
DNUF · DQ381
quattro Competition
2019–2023 · quattro Competition
2.0 l · 1984 cm³
DNUF · DQ381
quattro Competition
2019–2023 · quattro Competition
2.0 l · 1984 cm³
CJXG · MQ350
2.0 TFSI quattro
2015–2019 · quattro
2.0 l · 1984 cm³
CJXG · DQ250
2.0 TFSI quattro
2014–2019 · quattro
2.0 l · 1984 cm³
CJXG · MQ350
2.0 TFSI quattro
2014–2019 · quattro
2.0 l · 1984 cm³
CJXG · DQ250
2.0 TFSI quattro
2015–2019 · quattro
2.0 l · 1984 cm³
CJXG · DQ250
2.0 TFSI quattro Pro Line +
2014–2019 · quattro Pro Line +
2.0 l · 1984 cm³
CJXG · MQ350
2.0 TFSI quattro Pro Line +
2014–2019 · quattro Pro Line +
2.0 l · 1984 cm³
CJXG · DQ250
2.0 TFSI quattro Pro Line +
2015–2019 · quattro Pro Line +
2.0 l · 1984 cm³
CJXG · MQ350
2.0 TFSI quattro Pro Line +
2015–2019 · quattro Pro Line +
2.0 l · 1984 cm³
DNFD · DQ381
quattro
2019–2023 · quattro
2.0 l · 1984 cm³
DNFD · DQ381
quattro
2019–2023 · quattro
2.0 l · 1984 cm³
DNFD · DQ381
quattro Competition
2019–2023 · quattro Competition
2.0 l · 1984 cm³
DNFD · DQ381
quattro Competition
2019–2023 · quattro Competition
Neighbouring generations
8S (2014-2023). If the listing is from the changeover year, look at the neighbour too.
Common questions
2014–2023. The changeover year can fall in two generations. If the listing is from that year, look at the neighbour too.
No. It depends on the engine and the transmission too.
The fault list is.
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.