What Kind of Oil a 2019 Audi A6 Takes

A 2019 Audi A6 requires full synthetic engine oil that meets the VW 504 00 specification, most commonly in 0W-20 or 5W-30 viscosity depending on engine and market; using an oil that meets Audi/VW’s official spec is more important than the brand or exact weight alone.

Understanding the 2019 Audi A6 Oil Requirements

The 2019 Audi A6 is engineered around strict lubrication standards set by Volkswagen Group (Audi’s parent company). While many oils may “fit” the engine physically, only those that meet VW’s official approvals will properly protect the engine, support long service intervals, and keep the warranty (or goodwill repairs) on your side. The key is to look for VW 504 00 on the bottle for gasoline engines sold in North America and most other markets.

Official Oil Specifications for the 2019 Audi A6

The most important factor in choosing oil for a 2019 Audi A6 is compliance with Audi/VW’s factory oil standards, not just the viscosity printed on the label. These specifications ensure the oil has been tested for wear protection, deposits, fuel economy, and compatibility with modern emissions systems.

• Primary spec for gasoline engines: VW 504 00
• European diesel engines (where applicable): VW 507 00
• Oil type: 100% full synthetic only
• Typical viscosities from Audi: 0W-20 or 5W-30, depending on engine and region
• Approval vs. “meets or exceeds”: Prefer oils explicitly stating “Approved VW 504 00/507 00”

In practice, choosing an oil that clearly lists “VW 504 00” (and 507 00 where required) on the container ensures it meets Audi’s design targets, regardless of brand, and aligns with the maintenance schedules in the owner’s manual.

Engine-Specific Oil Guidance

The 2019 Audi A6 was sold with different engines depending on market. In North America, it primarily uses 2.0L and 3.0L turbocharged gasoline engines with mild-hybrid systems. While Audi can update recommendations via technical bulletins, the core requirement remains: a VW 504 00-approved synthetic oil in the specified viscosity range.

2.0 TFSI (Four-Cylinder Gasoline)

The 2.0-liter turbocharged four-cylinder (TFSI) in the 2019 A6 leans heavily on advanced turbocharging and direct injection, both of which demand stable, high‑quality oil. This engine is sensitive to sludge and intake deposits if the wrong oil is used or oil changes are delayed.

• Specification: VW 504 00 full synthetic
• Typical viscosity (U.S./Canada): 0W-20 is common from the factory in many late-model VW/Audi four-cylinders; some markets may use 5W-30 504 00
• Temperature range: 0W-20 and 5W-30 both cover typical climates; 0W-20 aids cold starts and efficiency
• Change interval: Up to ~10,000 miles or 1 year under normal conditions, following Audi’s service indicator

For owners, the practical rule is simple: any 0W-20 or 5W-30 oil with official VW 504 00 approval is acceptable; if in doubt, mirror the viscosity on the under‑hood label or owner’s manual and keep the VW spec non‑negotiable.

3.0 TFSI V6 (Turbocharged Six-Cylinder Gasoline)

The 3.0-liter TFSI V6 in the 2019 A6 and A6 Prestige models uses a single turbo and mild-hybrid system, placing additional demands on oil for both thermal stability and turbocharger protection. Proper oil selection is critical to long-term reliability.

• Specification: VW 504 00 full synthetic (gasoline)
• Common viscosity: 0W-20 or 5W-30, depending on region and Audi’s service literature updates
• Performance needs: High resistance to high-temperature breakdown, low deposits, strong turbo protection
• Emissions compatibility: Low-ash formulation compatible with catalytic converters and GPFs (gasoline particulate filters)

As with the four-cylinder, brand is secondary to the VW 504 00 approval. If you use the factory-recommended viscosity and spec, the engine will be adequately protected for normal and spirited driving.

Diesel Variants (Europe and Other Markets)

Where the 2019 A6 was sold with diesel engines (TDI), Audi uses an overlapping but distinct spec. These oils must navigate high soot loads and complex emissions systems like DPFs (diesel particulate filters).

• Primary spec: VW 507 00 for modern Audi/VW diesels
• Viscosity: Commonly 5W-30, sometimes 0W-30 depending on climate and engine
• Low SAPS: Low sulfur, ash, and phosphorus to protect DPFs and catalytic systems
• Backward compatibility: Often compatible with older VW 505.xx diesel specs, but always follow local Audi guidance

Diesel owners should treat VW 507 00 as mandatory; using non-approved oil can shorten the life of expensive emissions components and invalidate coverage.

Recommended Oil Brands and Examples

Many major oil manufacturers produce products meeting VW 504 00/507 00. While availability varies by country, most owners can find at least one compliant oil at dealerships, auto parts stores, or online retailers.

• Castrol: Castrol EDGE Professional or EDGE LL (LongLife) 0W-20 or 5W-30 with VW 504 00/507 00 approval
• Mobil: Mobil 1 ESP 0W-20 or 5W-30 (check label for VW 504 00/507 00)
• Liqui Moly: Top Tec 4200 5W-30 (VW 504 00/507 00) and newer 0W-20 variants where available
• Shell: Shell Helix Ultra Professional AV-L 0W-30/5W-30 (504 00/507 00 in many regions)
• Dealer-branded: Genuine Audi/VW oil (often rebranded from the above companies) labeled with VW 504 00/507 00

Owners don’t need to chase a specific brand; instead, they should verify the VW spec and viscosity on the label, giving priority to oils explicitly stating “Approved VW 504 00” rather than only “meets requirements.”

How to Confirm the Right Oil for Your Specific A6

Because Audi occasionally updates oil recommendations with technical service bulletins and regional differences exist, it’s wise to confirm the exact requirement for your individual vehicle rather than relying solely on general guidance.

• Check the owner’s manual: Look for the “Engine oil” section listing VW 504 00 (and viscosity) for gasoline, or VW 507 00 for diesel.
• Read the under-hood label: Many A6 models have a sticker near the engine bay or oil cap referencing the approved oil spec.
• Use the VIN at the dealer: An Audi service department can pull up the precise engine code and current oil spec for your VIN.
• Review local technical bulletins: Dealers can see whether Audi has shifted from 5W-30 to 0W-20 or similar updates in your region.
• Consult reputable parts catalogues: Major oil brands allow you to enter your year/make/model or VIN to validate the correct product.

This cross-checking approach ensures you follow the latest Audi guidance, avoid compatibility issues, and choose an oil that matches both the global spec and any local climatological or regulatory requirements.

Oil Capacity and Change Intervals

Knowing how much oil the engine holds and when to change it is as important as choosing the right specification. Overfilling or underfilling can harm the engine, and extended intervals with poor-quality oil can accelerate wear.

• Typical capacity (2.0 TFSI): Around 5–6 quarts (approximately 4.7–5.7 liters), depending on exact engine code and filter
• Typical capacity (3.0 TFSI V6): Roughly 6–7 quarts (about 5.7–6.6 liters)
• Official interval: Often up to 10,000 miles (15,000 km) or 1 year, per Audi’s flexible service intervals
• Severe use: Shorter intervals (5,000–7,500 miles) advisable for frequent short trips, heavy traffic, or extreme temps
• Electronic monitoring: Follow the car’s service indicator but don’t ignore time limits even if mileage is low

Exact capacity numbers should be confirmed in the owner’s manual or via a service guide for your engine code; always add slightly less than the full capacity, run the engine briefly, and then top off to the correct level.

Common Mistakes to Avoid

Many Audi owners make avoidable errors when changing oil, particularly when attempting DIY service or relying on generic “synthetic” labels. Avoiding these mistakes can protect your engine, turbocharger, and emissions system.

• Using generic synthetic oil without VW 504 00/507 00: Not all synthetics meet Audi’s requirements.
• Ignoring viscosity recommendations: Jumping to 10W-40 or thicker oils can harm cold-start protection and fuel economy.
• Skipping the filter change: The filter must also be replaced at every oil change using an OEM-quality part.
• Overfilling the crankcase: Too much oil can foam, increase crank windage, and stress seals and catalysts.
• Overextending intervals: Going far beyond 10,000 miles or 1 year accelerates wear and sludge, especially with short trips.

By focusing on the official VW spec, correct viscosity, and disciplined service intervals, owners can avoid the most common pitfalls that lead to premature engine or turbocharger issues in the 2019 A6.

Summary

The 2019 Audi A6 is designed to run on full synthetic engine oil that meets Audi/VW’s VW 504 00 specification for gasoline engines (and VW 507 00 for diesels in some markets), typically in 0W-20 or 5W-30 viscosity depending on engine and region. Brand matters less than official approval, so owners should always verify “VW 504 00/507 00” on the oil label, confirm viscosity and capacity via the owner’s manual or VIN-specific dealer guidance, and adhere to sensible change intervals—ideally around 10,000 miles or less under severe conditions. Following these guidelines preserves performance, protects the turbo and emissions systems, and maximizes the longevity of the 2019 A6’s powertrain.