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Audi carsCode 8N

Audi TT I problems (1998–2006)

All 1 engine and 1 gearbox of the Audi TT I that we have documented have high or critical severity faults: the DSG6 DQ250 gearbox and the 1.8 T 20v. None has a «Buy» verdict; the safest option is the 1.8 T 20v, with a «With caution» verdict.[1][2]

Outside the engine: Outside the engine, the Audi TT 8N stands out for electrical and electronic faults (instrument cluster, ESP, airbag) and misaligned electric windows according to owner reports, as well as the 1999-2000 stability recall. The data comes from owner reports and Wikipedia.[1][3]

Audi TT I (1998–2006)
Photo: Mhueltner · CC BY-SA 4.0 · Wikimedia Commons. Reference image for this generation.
02468106.6out of 10

Audi TT I rating: acceptable reliability

Calculated using only 12 documented faults and their sources: the most serious and frequent faults weigh more. Limited evidence: it is based on few sources or few documented faults, so it is not included in the rankings. Having few documented faults does not mean it is reliable: it may simply be little studied. How it is calculated

  • Engine6.85 faults
  • Gearbox8.2Manual: no faults · DSG6 DQ250: 6.4
  • Suspension7.71 fault and ITV (technical inspection)
  • Brakes7.3Technical inspection (ITV) only: 1.1 times the defects normal for its age
  • Tyres and wheels10.0No documented faults
  • Steering7.2Technical inspection (ITV) only: 1.1 times the defects normal for its age
  • Electrical system9.31 fault
  • Headlights and lights7.8Technical inspection (ITV) only: 0.9 times the defects normal for its age
  • Electronics and infotainment8.91 fault
  • Climate control9.61 fault
  • Bodywork and interior9.2Technical inspection (ITV) only: 0.3 times the defects normal for its age
  • Airbags and safety10.0No documented faults

The weak points of the Audi TT I

  1. 1Critical severity: Instability in corners at high speed: suspension and rear spoiler recallSuspension
  2. 2High severity: Mechatronic unit failure: solenoid valves and temperature sensorDSG6 DQ250 gearbox · repair €850–€3,100
  3. 3High severity: Turbo wear and oil consumption1.8 T 20v engine
  4. 4Medium severity: Wet clutch pack wear: slipping and vibrationsDSG6 DQ250 gearbox · repair €450–€850
  5. 5Medium severity: Dual-mass flywheel wear on the engines paired with the DQ250DSG6 DQ250 gearbox · repair €700–€1,300

Documented engines, from highest to lowest risk

The first label is the most serious fault affecting that engine in this car; the second, our verdict for the versions it is fitted to. Each engine's risk index is calculated only from the faults that affect this car (how we calculate it). We only show engines we have documented with sources: if yours does not appear, we have not analysed it yet. View all engines

See what to check before buying

Outside the engine

1 recall or campaign documented, the latest: Recall of all TTs for high-speed stability. See the campaigns for the Audi TT I

11 sourcesHow we work

DSG6 DQ250 gearbox

Volkswagen Group DSG6 DQ250 (02E)

In the TT I
2003–2006[4][5][6]
Name
3.2 V6 quattro DSG
Faults that affect it
3 · 1 of high or critical severity
Risk index on this car
36
Moderate risk

Verdict for the version it uses

  • DSG6 DQ250 (02E, 2003-2023)2003–2023 · 02E

    With caution

    It is a gearbox with a good general reputation for reliability, but it is worth checking the service history (in particular, whether the gearbox oil change has been carried out), making sure there are no fault codes stored in the mechatronic unit and taking a test drive from cold and when warm before buying.[7][8][9]

Faults that affect the TT I

  1. High severityFrequency: OccasionalElectronicsMechatronic unit failure: solenoid valves and temperature sensorYes, although less than on the dry-clutch DQ200: the DQ250 mechatronic unit can fail because of defective solenoid valves or an incorrect reading of the clutch temperature, with limp mode, harsh shifts or fault warnings on the dashboard. Volkswagen recalled vehicles in the US and Australia in 2009 for this reason.Repair (garage): €850–€3,100
  2. Medium severityFrequency: CommonClutchWet clutch pack wear: slipping and vibrationsYes: although the oil bath makes it last longer than the dry clutch of the DQ200, the DQ250's wet clutch pack also wears with use, especially on cars driven hard. It warns you with vibrations or jerks when pulling away and in traffic jams, and with slipping when accelerating hard.Repair (garage): €450–€850
  3. Medium severityFrequency: OccasionalTransmissionDual-mass flywheel wear on the engines paired with the DQ250It is common wear on the turbo engines paired with the DQ250 (Golf GTI/R, Cupra, RS, S3, TT), not a defect exclusive to the gearbox: the dual-mass flywheel damps engine vibrations and, over the years, its springs and bearings wear, with a metallic noise at idle and vibrations as the first warnings.Repair (garage): €700–€1,300

TT I DSG6 DQ250 gearbox pageAll versions and faults of the DSG6 DQ250

1.8 T 20v

Safest option

Volkswagen/Audi 1.8 T 20v turbo (EA113) · Petrol

In the TT I
1998–2006[1][6]
Names
1.8T 180 · 1.8T quattro 225
Faults that affect it
5 · 1 of high or critical severity
Risk index on this car
32
Moderate risk

Verdict for the versions it uses

  • 1.8 T 20v 180 hp (AUQ, 1998-2006)1998–2006 · 180 hp · AUQ

    With caution

    Audi TT owner reports document turbo failures (at 60,000 and 155,000 km) and water pump failures (replaced at 110,000 km and again at 130,000 km on the same car), as well as several mentions of the air mass meter; the Audi A3 with this engine also has accumulated mentions of the air mass meter and ignition coils.[1][2]

  • 1.8 T 20v 225 hp quattro (BAM, 1999-2006)1999–2006 · 225 hp · BAM

    With caution

    Among the 225 hp Audi TT owner reports collected by Fiches-auto.fr there are several mentions of ignition coils, the air mass meter and abnormal oil consumption (one case at 146,000 km); these are the same weak points as on the lower-power versions, and the sources consulted do not indicate that this version is more prone to them.[1]

Faults that affect the TT I

  1. High severityFrequency: OccasionalTurboTurbo wear and oil consumptionThe 1.8T turbo can fail over time -cases documented on an Audi TT at 60,000 and 155,000 km- and several sources link it to growing oil consumption in the engine itself. It is not the most cited fault, but it is one of the most expensive when it appears.
  2. Medium severityFrequency: OccasionalCoolingWater pump failureThe water pump is another documented weak point of the 1.8T: a 180 hp Audi TT had to have it replaced twice, at 110,000 and again at 130,000 km. Coolant leaks "in several places" are also described on a Passat with this engine.Appears at around 110,000 km
  3. Medium severityFrequency: OccasionalTimingTiming chain tensioner noise and wearAt least one owner documents the timing chain tensioner of this engine left unreplaced, with the resulting chain noise, on a Passat with 184,000 km; another report from a 180 hp Audi TT points to a timing problem at 90,000 km.
  4. Low severityFrequency: CommonIgnitionIgnition 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.
  5. Low severityFrequency: CommonIntakeAir 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.

TT I 1.8 T 20v pageAll versions and faults of the 1.8 T 20v

Faults of the Audi TT I outside the engine

Suspension, brakes, tyres, electronics and the rest of the car. They occur with any engine.

What the MOT inspection finds on the Audi TT I

Official Dutch MOT (APK) inspection data: 3,105 inspections of 1,200 cars registered between 1998 and 2005, compared with cars of the same age.

  • Suspension and axles· counts in the score

    Defects in 6.7% of inspections; in cars of its age, 10.7%.

    Fewer defects than average

  • Brakes· counts in the score

    Defects in 15% of inspections; in cars of its age, 14.2%.

    Average

  • Steering· counts in the score

    Defects in 5.4% of inspections; in cars of its age, 4.8%.

    Average

  • Headlights and lights· counts in the score

    Defects in 25.8% of inspections; in cars of its age, 29.2%.

    Average

  • Rust and bodywork· counts in the score

    Defects in 0.5% of inspections; in cars of its age, 2.2%.

    Fewer defects than average

  • Exhaust and emissions

    Defects in 6.5% of inspections; in cars of its age, 6.9%.

    Average

  • Fluid leaks

    Defects in 11.2% of inspections; in cars of its age, 15.2%.

    Fewer defects than average

  • Glass, wipers and mirrors

    Defects in 5.4% of inspections; in cars of its age, 6.6%.

    Average

  • Tyres and wheels· depends mostly on maintenance

    Defects in 15.1% of inspections; in cars of its age, 17.2%.

    Average

The inspection measures wear and the defects visible at a periodic check, not engine or electronics failures. Source: RDW Open Data (public domain). How we calculate it · opendata.rdw.nl

Checklist for buying a used Audi TT I

Check the advert or the paperwork to see which engine the car has and go through its section. Each point comes from a documented fault; you can tick them off as you inspect.

If it has the DSG6 DQ250 gearbox (2003–2006)

Mechatronic unit failure: solenoid valves and temperature sensor

High severity

Wet clutch pack wear: slipping and vibrations

Medium severity

Dual-mass flywheel wear on the engines paired with the DQ250

Medium severity

If it has the 1.8 T 20v (1998–2006)

Turbo wear and oil consumption

High severity

Water pump failure

Medium severity

Timing chain tensioner noise and wear

Medium severity

Ignition coil failure

Low severity

Air mass meter (MAF sensor) failure

Low severity

Wear parts for the Audi TT I

Brakes, wiper blades, pollen filter and battery, searched for this model. The exact part number depends on the engine and year: confirm it with the registration plate or VIN.

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Buying a Audi TT I?

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Frequently asked questions

Is the Audi TT I reliable?

All 1 engine and 1 gearbox of the Audi TT I that we have documented have high or critical severity faults: the DSG6 DQ250 gearbox and the 1.8 T 20v. None has a «Buy» verdict; the safest option is the 1.8 T 20v, with a «With caution» verdict. Outside the engine, the Audi TT 8N stands out for electrical and electronic faults (instrument cluster, ESP, airbag) and misaligned electric windows according to owner reports, as well as the 1999-2000 stability recall. The data comes from owner reports and Wikipedia.

Which Audi TT I engine is the most reliable?

Among the 1 engine and 1 gearbox we have documented, none has a «Buy» verdict; the safest option is the 1.8 T 20v, with a «With caution» verdict. Audi TT owner reports document turbo failures (at 60,000 and 155,000 km) and water pump failures (replaced at 110,000 km and again at 130,000 km on the same car), as well as several mentions of the air mass meter; the Audi A3 with this engine also has accumulated mentions of the air mass meter and ignition coils.[1][2]

What problems does the Audi TT I have apart from the engine?

Outside the engine, the Audi TT 8N stands out for electrical and electronic faults (instrument cluster, ESP, airbag) and misaligned electric windows according to owner reports, as well as the 1999-2000 stability recall. The data comes from owner reports and Wikipedia. The most important documented faults are: instability in corners at high speed: suspension and rear spoiler recall (suspension, critical severity), instrument cluster and on-board electronics faults (pixels, ESP and airbag warning lights) (electronics and infotainment, low severity), audi TT 8N electric window misalignment and failure (electrical system, low severity) and air conditioning gas loss and compressor failure (climate control, low severity).[1][3]

What faults does the Audi TT I have?

The most important by severity and frequency, on the engines we have documented, are: mechatronic unit failure: solenoid valves and temperature sensor (DSG6 DQ250, high severity), turbo wear and oil consumption (1.8 T 20v, high severity), wet clutch pack wear: slipping and vibrations (DSG6 DQ250, medium severity), dual-mass flywheel wear on the engines paired with the DQ250 (DSG6 DQ250, medium severity) and water pump failure (1.8 T 20v, medium severity).

What is the best year to buy a Audi TT I?

According to our rating by year, the best are 2002 and 2001 (7.5/10); the worst rated is 1998 (6.7/10). Each year's rating counts only the engines sold that year and the faults that affect those units: open each year to see what changes.

Does the Audi TT I have recalls?

Yes: we have documented one campaign for the Audi TT I, such as recall of all TTs for high-speed stability (1999). Check with your VIN at the official service centre whether yours has been done.[3]

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Fiabilité et pannes Audi TTFiches-auto.fr · Other source · consulted 27 September 2026 · in French
  2. Fiabilité et pannes Audi A3Fiches-auto.fr · Other source · consulted 27 September 2026 · in French
  3. Audi TT (Wikipedia, es)Wikipedia · Other source · consulted 5 October 2026 · in Spanish
  4. Direct-shift gearboxWikipedia · Other source · consulted 27 September 2026
  5. DirektschaltgetriebeWikipedia · Other source · consulted 27 September 2026 · in German
  6. Audi TTWikipedia · Other source · consulted 27 September 2026
  7. VW, Skoda & Seat DSG Probleme: alle 6 und 7-Gang DQ GetriebeCarwiki · Technical documentation · consulted 27 September 2026 · in German
  8. DSG Gearboxes: Complete Guide to DQ200, DQ250, DQ381, DQ400e, DQ500, DL501 & DSG 6, 7 and 8 SpeedsSTR Performance · Technical documentation · consulted 27 September 2026
  9. Reparar DSG en España: Precios RealesTCA - Tu Cambio Automático · Technical documentation · published 2025 · consulted 27 September 2026 · in Spanish
  10. Volante bimasa: cómo saber si está averiado y cuánto cuesta sustituirloDiariomotor · Motoring press · published 2 November 2020 · consulted 27 September 2026 · in Spanish
  11. Seat Leon Mk1: Probleme, Schwachstellen, ErfahrungenGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German