1997 Audi A6 problems
The 1997 Audi A6 was sold with an engine that we have documented: the 1.9 TDI. The 1.9 TDI has serious faults that affect the cars of that year. Outside the engine, 3 documented faults affect 1997 cars, such as jerks and slipping in the Tiptronic automatic gearbox.
1997 Audi A6 score: acceptable reliability
Calculated using only 6 documented faults and their sources: the most serious and frequent faults weigh more. How it is calculated
- Engine5.13 faults
- Gearbox7.91 fault
- Suspension7.71 fault and ITV (technical inspection)
- Brakes7.0Technical inspection (ITV) only: 1.2 times the defects normal for its age
- Tyres and wheels10.0No documented faults
- Steering5.7Technical inspection (ITV) only: 1.7 times the defects normal for its age
- Electrical system9.31 fault
- Headlights and lights7.5Technical inspection (ITV) only: 1.0 times the defects normal for its age
- Electronics and infotainment10.0No documented faults
- Climate control10.0No documented faults
- Bodywork and interior9.0Technical inspection (ITV) only: 0.4 times the defects normal for its age
- Airbags and safety10.0No documented faults
1.9 TDI engine in the 1997 Audi A6
Names: 1.9 TDI 100 · 1.9 TDI 115 · 1.9 TDI 130
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1.9 TDI rotary pump (VP37, 1996-2003)
90–110 hp · 1Z, AHU, AGR, AHH, ALE, ALH, AFN, AVG
Fiches-auto rates the 90-100 hp 1.9 TDI as the most reliable of the whole family, to the point of recommending buying it "with your eyes closed", with watching the EGR valve in very urban use as the only relevant warning.[3]
Faults that affect 1997 cars
- High severityFrequency: CommonTurboSeized or broken variable-geometry turboThe 1.9 TDI's variable-geometry turbo seizes through carbon build-up or ends up breaking after many kilometres; it appears repeatedly in all the models and outputs consulted, with cases from as early as 22,000 km.Repair (garage): €360–€900Appears at around 22,000 km
- Medium severityFrequency: Very frequentEmissions controlEGR valve clogged with carbonThe 1.9 TDI's EGR valve fills with carbon deposits, especially on short, urban journeys, and it is the fault that appears in the statistics for every model and output consulted, from the rotary pump to the unit injector.Repair (garage): €350–€450Appears at around 50,000 km
- Low severityFrequency: CommonIntakeDirty or faulty air flow meter on the 1.9 TDI (loss of power)The air flow meter is a known weak point of the 1.9 TDI: it gets dirty or gives wrong readings, and the control unit limits the engine, causing a sudden loss of power. It is cheap to fix and does not damage the engine.Repair (garage): €100–€300
Faults outside the engine in the 1997 Audi A6
- High severityFrequency: OccasionalGearbox and clutchJerks 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: CommonSuspensionPremature wear of the suspension arms and ball jointsAccording to owner reports on fiches-auto.fr, the A6 C5's suspension arms are usually replaced at around 100,000-110,000 km, with 11 cases of ball joints and reports of bushes (silentblocks) beyond 180,000 km.Appears at around 100,000 km
- Low severityFrequency: OccasionalElectrical systemElectric window regulator failureAccording to owner reports on fiches-auto.fr, 23 of 186 A6 C5 owners cite electric window regulator failure, and one points to the rear window jammed by a blue bracket.
Buying a 1997 Audi A6?
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Frequently asked questions
Is the 1997 Audi A6 reliable?
The 1997 Audi A6 was sold with an engine that we have documented: the 1.9 TDI. The 1.9 TDI has serious faults that affect the cars of that year. Outside the engine, 3 documented faults affect 1997 cars, such as jerks and slipping in the Tiptronic automatic gearbox.
What is the best year for the Audi A6?
According to our score, the best are 1998 and 1997 (5.9/10). The year with the worst score is 1999 (4.6/10). Each year's score counts only the engines sold that year and the faults that affect those cars.
What faults does the 1997 Audi A6 have?
The most important ones documented for 1997 cars are: seized or broken variable-geometry turbo (1.9 TDI, high severity), jerks and slipping in the Tiptronic automatic gearbox (gearbox and clutch, high severity), eGR valve clogged with carbon (1.9 TDI, medium severity), premature wear of the suspension arms and ball joints (suspension, medium severity) and dirty or faulty air flow meter on the 1.9 TDI (loss of power) (1.9 TDI, low severity).
Own a 1997 Audi A6? Tell us what faults you have had and at how many kilometres. Report your fault.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- List of discontinued Volkswagen Group diesel enginesWikipedia (inglés) · Other source · consulted 27 September 2026
- Tous les problèmes sur Audi A6 (1997-2004)fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
- Les TDI sont-ils fiables ?fiches-auto.fr · Motoring press · published 15 December 2016 · consulted 27 September 2026 · in French