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Audi A4 B6 common problems

2 faults documented by at least two sources, listed by version then by mileage at onset when known.

Good choice, check first
Reliability
4.5/5

2 known faults

This guide has not been translated yet: it is shown in its original French version.

1.9 TDI 130 quattro

  1. Turbo et débitmètre : usure précoce sur les millésimes 2000

    Severity 2/3 · Costly

    Selon CarVerif, les A4 B6 1.9 TDI 130 de 2000 présentent plus de risques d'usure précoce sur le turbo et le débitmètre ; la fiabilité s'améliore à partir de 2002. Un seul site en parle : information à confirmer.

    Single source so far: to be confirmed.

    Versions
    1.9 TDI 130 quattro
    Onset
    not documented
    Repair
    not documented

  2. Soucis électroniques mineurs avant 100 000 km

    Severity 1/3 · Annoying

    CarVerif signale des défauts électroniques mineurs avant 100 000 km, sans campagne officielle de rappel. Un seul site en parle : information à confirmer.

    Single source so far: to be confirmed.

    Versions
    1.9 TDI 130 quattro
    Onset
    not documented
    Repair
    not documented

No recurring fault documented for: 2.5 TDI V6 155.

Price and diagnose repairs

Read fault codes

An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.

Parts and maintenance

Compare prices of parts for the Audi A4 B6 (timing, brakes, filters) to estimate the repairs to plan for.

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