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Audi Oil Consumption

Audi oil consumption can be normal usage, PCV trouble, turbo leakage, or deeper piston-ring risk, so buyers need evidence rather than reassurance.

Repair difficulty
Haut
Estimated cost
Low for PCV; high if internal engine wear is confirmed.

Affected models and engines

  • Audi TFSI engines, especially older/high-mileage examples and poorly serviced cars

Symptoms

  • Low oil warning
  • Blue smoke
  • Oil smell
  • Fouled plugs or misfires

Why it fails

  • PCV faults, ring wear, turbo seals, and long oil intervals can all increase consumption.
  • Sellers may top up before viewing.
  • Catalysts and plugs can suffer secondary damage.

Checks before buying

  • Ask how much oil the car uses per 1,000 km.
  • Inspect plugs, exhaust smoke, and service invoices.
  • Check PCV history and oil grade.
  • Avoid cars with unexplained low-oil warnings.

Fault codes to investigate

P0171P0300P0301P0420

Fault codes guide diagnosis; they do not confirm a part without live data, inspection, service history, and repeat testing.

Related research

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Used-car checklist

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Powertrain
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P0171 fault code

Fault code
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P0300 fault code

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P0301 fault code

Fault code
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P0420 fault code

Fault code
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