What Oil Does a 2019 Audi A6 Take?

The 2019 Audi A6 typically requires fully synthetic engine oil that meets Audi/VW specification VW 508 00 / 509 00 with a viscosity of 0W-20 for most North American and many European gasoline models, though some engines and diesel variants use different specs such as VW 504 00 / 507 00 (often 5W-30). The exact oil depends on engine type, market, and emissions package, so the owner’s manual or under-hood label remains the final authority.

Why the Correct Oil Matters for the 2019 Audi A6

The 2019 Audi A6 uses advanced turbocharged engines and, in many regions, mild-hybrid systems that place demanding requirements on lubrication. The wrong oil can affect engine protection, fuel economy, emissions system longevity, and warranty coverage. Audi therefore uses strict in-house oil specifications (VW norms) rather than just generic viscosity grades.

Key Oil Specification for Most 2019 Audi A6 Gasoline Models

For many 2019 Audi A6 gasoline versions—especially in the U.S. and Canada—the primary requirement is oil that meets the VW 508 00 / 509 00 specification with a 0W-20 viscosity, designed for low-friction, long-life service intervals.

Main Audi/VW Oil Spec for 2019 A6 Gas Engines

The following list summarizes the most common oil specification for 2019 Audi A6 gasoline engines and what it means in practice.

• Spec: VW 508 00 / 509 00 (also written VW 508.00 / 509.00)
• Viscosity: 0W-20 fully synthetic
• Typical Engines: 2.0 TFSI and 3.0 TFSI in many 2019 A6 models, especially for North America
• Purpose: Low-friction, extended service intervals, optimized fuel economy, compatibility with modern emissions equipment
• Labels to Look For: “Approved for VW 508 00 / 509 00” on the oil container, not just “suitable for”

In practice, this means that when shopping for oil, you should prioritize the VW 508 00 / 509 00 approval marking first, and treat 0W-20 viscosity as the default match for most North American 2019 A6 gasoline models.

Other Common Audi Oil Specs for the 2019 A6

Outside North America, or with different engines (especially some diesels), the 2019 A6 may use alternative VW oil specifications such as 504 00 / 507 00, usually in a 5W-30 grade. These are also fully synthetic oils but tuned for slightly different operating and emissions profiles.

Alternative Specifications (Especially for Diesel and Some Regional Variants)

The following list outlines other VW specifications that can be correct for a 2019 A6, depending on engine and region.

• VW 504 00 / 507 00 – Common long-life spec for many European Audi gasoline and diesel engines; often paired with 5W-30.
• VW 502 00 / 505 00 – Older but still used spec for some engines or in markets without extended service intervals; typically 5W-40 or 5W-30.
• Regional Variants: Some countries allow or recommend 5W-30 or 5W-40 instead of 0W-20 depending on climate, fuel quality, and regulatory standards.
• Diesel-Specific Guidance: Many 2019 A6 TDI models require VW 504 00 / 507 00 low-SAPS oil to protect the diesel particulate filter (DPF).
• Check Local Documentation: Dealer printouts or regional owner’s manuals often list accepted alternatives where VW 508 00 / 509 00 is not specified.

These alternatives mean that while VW 508 00 / 509 00 with 0W-20 is common, owners in Europe or with diesel engines may legitimately be instructed to use VW 504 00 / 507 00 or similar, usually in 5W-30 form.

How to Confirm the Correct Oil for Your Specific A6

Because the 2019 Audi A6 lineup includes different engines and market variants, verification on your particular vehicle is critical. Audi’s documentation and the car itself provide clear references if you know where to look.

Sources You Should Check

The following list explains where to find the exact oil specification for your 2019 Audi A6 and how to use that information.

1. Owner’s Manual: Look in the “Engine Oil” or “Specifications” section; it will list VW norms (e.g., VW 508 00 / 509 00) and sometimes permissible alternatives.
2. Oil Filler Cap: Some vehicles have the oil spec or viscosity printed directly on the cap (e.g., “0W-20 VW 508 00”).
3. Service Booklet / Digital Service Record: Audi service documents often record the oil specification used at each service.
4. Under-Hood Sticker or Label: In certain markets, a label in the engine bay notes required VW oil norms.
5. Audi Dealer or Official Service Center: Providing your VIN allows staff to look up the exact engine code and the correct oil spec for that configuration.

Checking these sources ensures that you do not rely solely on general guidance or internet charts, and reduces the risk of using oil that does not meet Audi’s exact requirements for your engine.

Viscosity Explained: Why 0W-20 Is Common for the 2019 A6

Viscosity (0W-20, 5W-30, etc.) describes how thick or thin oil is at cold and operating temperatures. Audi has increasingly moved to thinner oils like 0W-20 in newer models to improve fuel economy and reduce internal friction, while still maintaining protection through advanced additive packages.

Typical Viscosity Options and Behavior

The following list compares common viscosities you may encounter and what they mean for a 2019 Audi A6.

• 0W-20: Very low cold viscosity for faster circulation on startup; standard for many 2019 A6 TFSI engines with VW 508 00 / 509 00.
• 5W-30: Slightly thicker, widely used with VW 504 00 / 507 00, particularly for some European or diesel A6 models.
• 5W-40: Thicker at operating temperatures; seen with older specs (VW 502 00 / 505 00) in specific markets or service conditions.
• Climate Considerations: In extremely cold climates, 0W oils can improve start-up protection; in high-heat or high-load use, slightly higher hot viscosity may be preferred if explicitly allowed by Audi.
• Do Not Mix Arbitrarily: Viscosity is secondary to spec; an oil with perfect viscosity but the wrong VW approval is not acceptable.

Understanding viscosity helps explain why the same model year can have different recommendations across regions, but the VW approval code on the bottle remains the decisive factor.

Brand Examples That Meet Audi’s Requirements

Multiple major oil brands produce products approved to VW 508 00 / 509 00 and 504 00 / 507 00. Audi’s own branded oil is usually sourced from a major supplier and matched to these specs.

Typical Approved Product Types

The list below gives representative examples of oil descriptions you might see on shelves that are suitable for a 2019 Audi A6, as long as the VW approval is clearly printed.

• Audi / VW Genuine Oil: Typically labeled 0W-20 LongLife IV (LL IV) with VW 508 00 / 509 00 approval.
• Major European Brands: 0W-20 “Longlife IV” or explicitly “VW 508 00 / 509 00 approved” full synthetics.
• 504 00 / 507 00 Oils: Often 5W-30 “Longlife III” style products for markets and engines that use those norms, including many TDI models.
• Label Wording: Look for “Approved for” or “Meets and exceeds VW 508 00 / 509 00” with an official approval number, not just “recommended for use in.”
• Avoid Unapproved Oils: Generic 0W-20 or 5W-30 without the specific VW approval may not protect emissions hardware or support extended intervals as designed.

These examples illustrate that the brand is less important than the VW approval; once the correct spec is confirmed, you can choose among reputable suppliers based on availability and price.

Oil Change Intervals and Warranty Considerations

Using the correct oil is closely tied to Audi’s flexible (long-life) or fixed service intervals and may affect warranty coverage, particularly for engine or emissions-related claims.

Service Intervals and Record-Keeping

The following list outlines how oil choice connects to maintenance schedules and warranty for a 2019 Audi A6.

1. Flexible (Long-Life) Interval: In many markets, Audi allows up to about 15,000–20,000 km (or up to ~10,000–12,000 miles) or roughly 1–2 years between changes, only when approved long-life oil (e.g., VW 508 00 / 509 00) is used.
2. Fixed Interval: Some regions or driving profiles (short trips, dusty conditions) require shorter fixed intervals, often around 10,000 km / 6,000–10,000 miles or once per year.
3. Warranty Impact: Documented use of the required VW specification oil supports warranty claims; use of non-approved oil can complicate or void coverage for lubrication-related failures.
4. Digital Service Records: Many 2019 A6 cars store service information electronically; ensure oil type is noted by the service center.
5. DIY Changes: Keep receipts and note mileage and date; ensure the product clearly lists the right VW spec on the invoice and container.

Aligning your oil choice with Audi’s specified intervals and documentation practices helps preserve both engine health and your legal position if a warranty dispute arises.

Practical Takeaway for 2019 Audi A6 Owners

For most owners of a 2019 Audi A6—especially with gasoline engines in the U.S. and Canada—the safe default is a fully synthetic 0W-20 oil explicitly approved to VW 508 00 / 509 00. Diesel models and some regional variants may instead require VW 504 00 / 507 00, usually as a 5W-30. The VIN-specific information in your owner’s manual and at the dealer remains the final reference.

Summary

A 2019 Audi A6 generally takes fully synthetic, VW-approved engine oil, with VW 508 00 / 509 00 (0W-20) being the predominant specification for many gasoline models and VW 504 00 / 507 00 (often 5W-30) used on some engines, especially diesels and certain markets. The exact requirement depends on engine type and region, so owners should confirm via the owner’s manual, under-hood labels, and VIN-based dealer lookup. Whatever the viscosity, the critical factor is that the oil bottle carries the correct official VW approval code to ensure proper protection, emissions compatibility, and warranty compliance.