2013 Audi A4 Allroad Prestige Quattro with ~175,000 miles. All-wheel drive (Quattro), runs and drives well. Recently replaced PCV valve and battery. Interior is in good condition.

Check engine light is on. I have full diagnostics showing all codes; main concerns are defective crankcase breather, leaking false air, failed turbocharger, or damaged wastegate actuator. Shop wanted further diagnostics to pinpoint the exact issue. Could be any of these, each with a broad price range. Rich exhaust-type smell when driving or near car, likely related. Selling as-is as a mechanic special.

Tires need replacement now; options found for ~$93 each. Fully loaded Prestige trim. Motivated seller — moving and want it gone!

Clean title. Asking $4,000 OBO Happy to share all diagnostics and answer questions.