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2017 Q3 Prestige Excessive Oil Consumption

0

Mike T. · rep 0 · May 26, 3:46 AM · 1 replies · solved · Question

Vehicle: 2017 Audi Q3 Prestige

Hello everyone,

I'm an owner of a 2017 Audi Q3 Prestige, and I've noticed a significant increase in oil consumption lately. I seem to be adding a quart of oil every 1,000-1,500 miles, which feels excessive for a car with around 70,000 miles on it.

I haven't seen any visible leaks under the car, and there's no blue smoke from the exhaust that I can detect. The car runs fine otherwise, no warning lights or performance issues. I'm using the recommended synthetic oil.

Is this level of oil consumption normal for the 2.0 TFSI engine in the Q3? What could be causing this, and what steps should I take? I'm worried about potential long-term engine damage.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 26, 3:46 AM

0

ClearTheCode admin answer:

Excessive oil consumption in the 2.0 TFSI engines found in your 2017 Audi Q3 Prestige is a known concern for some owners, though it's important to differentiate between normal consumption and excessive levels. While some oil consumption is normal for turbocharged engines, adding a quart every 1,000-1,500 miles is definitely on the higher side.

Potential Causes:

  1. PCV Valve (Positive Crankcase Ventilation) System: A common culprit. If the PCV valve or its associated components (like the oil separator) fail, it can lead to increased crankcase pressure, forcing oil past piston rings or valve stem seals, and into the combustion chamber or intake.
  2. Turbocharger Issues: A failing turbocharger can leak oil into either the intake or exhaust side. While you haven't seen blue smoke, a small, consistent leak could be burning off without obvious signs.
  3. Piston Rings/Valve Stem Seals: Over time, these components can wear, leading to oil bypassing them. This is typically a more involved and costly repair.
  4. Software Glitch: Less common, but sometimes engine control unit (ECU) software can contribute to minor issues that affect oil consumption.

What to Do:

  • Oil Consumption Test: The first step is to have an authorized Audi dealership or a reputable independent shop perform an official Audi oil consumption test. This involves draining, weighing, and refilling the oil, then sealing the engine and having you return after a set mileage (e.g., 600-1000 miles) for re-weighing. This accurately measures consumption.
  • Inspect PCV System: A mechanic can inspect the PCV valve and related hoses for clogs or failures.
  • Check for Leaks: Even if you don't see drips, small external leaks can occur and burn off on hot engine components.

When to See a Shop:

Given the rate of consumption, it's crucial to have your Q3 inspected by an Audi specialist. An official oil consumption test is the best way to diagnose the specific cause and determine if it falls outside Audi's acceptable parameters, potentially qualifying for repairs under warranty or extended goodwill programs, depending on your vehicle's history and mileage. Ignoring it can lead to carbon buildup and potential engine damage.

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