Engine Performance And Maintenance: Fuel

2025 Audi Q3 PremiumSECTION Fuel
Condition Code Procedure
Contaminated B Require repair or replacement
NOTE: Determine of source of contamination. Require repair or replacement.
Fuel incorrect B Require flushing of system
NOTE: If a fuel other than specification fuel is present in the system, the required service is to flush and fill with the correct fuel.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.