Most Audi A4s use full-synthetic engine oil that meets Volkswagen Group approvals. In practice, that means oils stamped VW 502 00 for most petrol engines, VW 504 00/507 00 for long‑life service on eligible engines, and newer motors may require VW 508 00/509 00. Common viscosities are 5W-30 or 5W-40, with 0W-20 used in some newer engines depending on the specification. Always verify the exact requirement for your model/year.
Key factors that determine the oil you need
Choosing the right oil hinges on your exact A4’s engine code, model year, climate, and maintenance schedule. The information you need is spread across the owner’s manual, the engine bay label, and the service records. Start by identifying the correct VW specification and viscosity recommended for your car.
Gasoline engines
Most gasoline A4 engines require a synthetic oil that carries VW 502 00 approval. Many models supporting longer service intervals can also use VW 504 00 or VW 507 00, depending on the engine and maintenance plan. Some newer gasoline engines may specify 0W-20 with recent VW approvals (such as 508 00/509 00) for improved efficiency.
Diesel engines
Diesel variants in the A4 line typically rely on diesel-specific approvals such as VW 507 00 or other VW Group long-life specifications. Always check your manual or with a dealer for the exact diesel oil requirement and viscosity for your engine code.
Common oil viscosities you’ll see for the A4
The recommended viscosity depends on engine type, climate, and service interval. The following guidance reflects typical practices, but your car’s manual is the final authority.
- 5W-30: Widely recommended for many petrol A4 engines with modern VW approvals.
- 5W-40: Used in some engines or hotter climates for extra protection.
- 0W-20: Required on certain newer engines or in very cold climates, depending on the VW specification.
Concluding: Match the viscosity to the exact specification for your engine and climate. Using the wrong grade can affect performance and warranty coverage.
How to confirm the exact oil for your Audi A4
To ensure you choose the correct oil for your vehicle, follow these steps:
- Consult the owner's manual or the onboard maintenance information to identify the required VW specification (for example, VW 502 00 or VW 504 00/507 00) and the recommended viscosity.
- Check your engine code and model year, since requirements can vary between versions of the A4.
- Inspect the engine oil fill cap or service stickers on the vehicle; sometimes the recommended viscosity is printed there.
- If you’re unsure, contact an authorized Audi dealer or a trusted service center and provide your VIN to get the exact specification for your car.
Concluding: Verifying the correct spec for your exact A4 helps ensure proper lubrication, performance, and warranty compliance.
Summary
The Audi A4 generally needs a full-synthetic oil that meets Volkswagen Group approvals. The most common requirements are VW 502 00 for petrol engines and VW 504 00/507 00 for long-life service, with some newer engines calling for VW 508 00/509 00. Viscosity is typically 5W-30 or 5W-40, though 0W-20 appears in select newer engines. Always confirm the exact specification and viscosity from your manual, engine code, or dealer, and use OEM-approved oils from reputable brands.