Jerking on Audi: causes by model and engine

Documented faults, from most to least important

Severity × frequency. Below each one, the Audi models it appears in.

- Medium severityFrequency: Very frequent2.0 TSI / TFSICarbon build-up on the intake valvesBecause the fuel is injected directly into the cylinder, no petrol washes over the intake valves, so oil residue and soot build up and, over the years, restrict airflow and affect engine response.
In A3 II, A3 III, A4 B8, A4 B9, A5 I and Q3 I and 3 more models
- High severityFrequency: Occasional1.9 TDIUnit injector tappet wear and injector wiring damageOn the unit injector system, the tappets that operate the injectors can wear if the oil is not changed on time, and the injector wiring can be damaged by contact with oil, causing misfires or loss of power.
In A3 I and A6 C5
- High severityFrequency: OccasionalAudi A6 C5Jerks and slipping in the Tiptronic automatic gearboxAccording to owner reports on fiches-auto.fr, there are 19 cases of gearbox problems in the A6 C5, with jerks and slipping in the Tiptronic at around 200,000 km and repairs of more than 6,000 euros at Audi.Appears at around 200,000 km
- Medium severityFrequency: Common1.6 TDIEGR valve clogged with carbon depositsThe EGR valve accumulates carbon deposits, especially on short urban trips, until it seizes and no longer seals or opens precisely. The engine loses power and jerks; cleaning the valve costs considerably less than replacing it.Repair (garage): €100–€1,000
In A1 I, A3 II and A3 III
- Medium severityFrequency: Common1.4 TDIEGR valve clogged with carbonThe EGR valve builds up carbon, especially on short urban trips, until it seizes and stops sealing or opening precisely. The engine loses power and jerks; cleaning it costs considerably less than replacing it.Repair (garage): €100–€1,000
In A1 I and A2
- Medium severityFrequency: Common2.0 FSIIgnition coil failureIgnition coils are the engine fault that owners of this 2.0 FSI report most often, in models as different as the Golf V, Passat B6, Leon II and Altea. They cause an unstable idle, the engine running on fewer cylinders and, at times, difficulty starting.
In A3 II and A4 B7
- Medium severityFrequency: OccasionalVW 2.0 TFSI EA113Carbon build-up on the intake valves from direct injectionOn a direct-injection engine like the 2.0 TFSI the petrol does not wash over the intake valves and oil vapour from the crankcase builds up on them, causing rough idle, hesitation and loss of power; it is fixed with a professional clean.
In A3 II, A4 B7 and TT II
- Low severityFrequency: Very frequent1.0 TSI / 1.5 TSICold jerking at low speed ("kangaroo effect") on the 1.5 TSI evoThe 2017–2019 1.5 TSI evo can jerk and judder when pulling away and driving slowly with a cold engine, especially with a manual gearbox. It is a calibration fault, not a mechanical one: Volkswagen dealt with it through engine software updates between 2019 and 2020.
In A1 II, A3 III, A3 IV, Q2 and Q3 II
- Low severityFrequency: CommonAudi 3.0 TFSI V6Carbon build-up on the intake valves (direct injection)Like any direct-injection engine, the 3.0 TFSI accumulates carbon on the intake valves, because the fuel does not wash them; guides put it at around 95,000 km and it causes rough idle and loss of power. The 333 hp versions from 2014 add indirect injection.
In A4 B8, A5 I, A6 C6, A6 C7, A7 C7 and A8 D4 and 2 more models
- Low severityFrequency: Common1.8 T 20vIgnition coil failureYes: the ignition coils (one per cylinder) are among the most cited faults of the 1.8T, especially on engines built between 2001 and 2003. They cause hesitation, a rough idle and the engine warning light coming on; usually it is enough to replace the coil of the affected cylinder.
In A3 I, A4 B5, A4 B6 and TT I
- Low severityFrequency: Common1.8 T 20vAir mass meter (MAF sensor) failureThe air mass meter (MAF sensor) fails fairly often on the 1.8T: on the 150 hp Audi A3 it appears in 3 of the 11 reports collected, and it is also documented on the 180 and 225 hp Audi TT. It causes hesitation and loss of power; it is fixed by replacing the sensor.
In A3 I, A4 B5, A4 B6 and TT I

By Audi model

Open yours to see only the faults that affect it, by engine and by year.

Engines and gearboxes involved

Frequently asked questions

Jerking in a Audi: what could it be?

In 26 models from Audi there are 11 documented faults that cause this symptom (jerking). The most important: carbon build-up on the intake valves, unit injector tappet wear and injector wiring damage and jerks and slipping in the Tiptronic automatic gearbox. Each fault has its own page with the affected years and versions, the cause and how to check for it.

Which Audi models have the most faults with this symptom?

Audi A3 II (4 faults), Audi A3 I (3 faults), Audi A3 III (3 faults) and Audi A4 B5 (2 faults).

Which Audi engines cause it?

1.8 T 20v (2 faults), 1.0 TSI / 1.5 TSI (1 fault), 1.4 TDI (1 fault), 1.6 TDI (1 fault) and 1.9 TDI (1 fault).