What Oil Does an Audi A3 2018 Take?

An Audi A3 2018 typically requires fully synthetic engine oil that meets Volkswagen/Audi specification VW 504 00 (for petrol) or VW 507 00 (for most diesel models), most commonly in viscosity grades like 5W‑30 or 0W‑30. The exact oil depends on the engine variant and regional specifications, so the owner’s manual or filler-cap label should always be checked before topping up or changing oil.

Understanding Audi’s Oil Requirements for the 2018 A3

The 2018 Audi A3 range includes several engines—both petrol and diesel—and Audi specifies oil by internal standards (VW 504 00 / 507 00, etc.) rather than just by viscosity like 5W‑30. These standards ensure compatibility with the engine’s design, turbocharger, emissions systems, and flexible (LongLife) service intervals.

Core Oil Specifications for the 2018 Audi A3

Volkswagen/Audi Oil Standards: What They Mean

Audi, as part of the Volkswagen Group, defines oil approvals by VW codes. Knowing these codes is more important than the brand name itself, because any oil carrying the correct approval will meet the car’s technical requirements.

The main VW/Audi oil specifications relevant to a 2018 Audi A3 are:

• VW 504 00 – LongLife specification for modern direct‑injection petrol (gasoline) engines, often paired with 5W‑30 or 0W‑30 oils.
• VW 507 00 – LongLife, low‑SAPs (low ash) oil for most modern diesel engines with diesel particulate filters (DPF), also commonly 5W‑30 or 0W‑30.
• VW 502 00 / 505 00 – Older fixed‑interval specifications occasionally used where LongLife servicing is not enabled or in certain markets.

These codes appear on the back label of the oil container—often in small print—alongside ACEA and API classifications. As long as the label explicitly states VW 504 00 or VW 507 00 (or the specific spec listed in your manual), the oil is suitable, irrespective of brand.

Typical 2018 Audi A3 Engine Types and Their Oils

The 2018 Audi A3 came with several engine options depending on market (Europe, North America, etc.). While exact requirements can vary, Audi’s general rule for that model year is to use LongLife synthetic oil with VW 504 00 for petrol engines and VW 507 00 for most diesels.

Below are common engine categories and their typical oil requirements:

• 1.0 TFSI, 1.4 TFSI, 1.5 TFSI, 2.0 TFSI petrol engines – Usually require fully synthetic oil approved to VW 504 00, typically 5W‑30 or 0W‑30 in Europe. In North America, many dealers use a VW‑approved 0W‑40 or 5W‑40 meeting appropriate VW gasoline specs.
• 1.6 TDI, 2.0 TDI diesel engines (with DPF) – Generally require fully synthetic, low‑ash oil meeting VW 507 00, most commonly in 5W‑30 viscosity.
• S3 (2.0 TFSI high‑performance) – Also uses fully synthetic oil carrying the correct VW petrol approval, often VW 502 00 / 504 00 depending on region, with viscosities like 0W‑40 or 5W‑40 favored in hotter climates or under spirited driving.

Because local fuel quality, climate, and regulatory standards vary, Audi may specify slightly different oil grades or VW codes in different countries, but the principle remains: the VW approval number on the oil container must match what is listed in the owner’s manual.

Choosing the Right Viscosity Grade

Common Viscosity Options: 5W‑30, 0W‑30, and 0W‑40

Viscosity numbers describe how thick or thin the oil is at cold start and at normal operating temperature. Audi’s recommendations for the 2018 A3 usually center around multi‑grade synthetic oils that flow well in cold conditions yet protect the engine when hot.

Here are the most common viscosity grades you’ll encounter for a 2018 Audi A3:

• 5W‑30 – Widely recommended in Europe for both petrol (VW 504 00) and diesel (VW 507 00) LongLife service. Provides balanced cold‑start performance and fuel economy.
• 0W‑30 – Flows even better at very low temperatures. More common in cold‑climate markets or where Audi specifically lists it for improved efficiency and cold‑start protection.
• 0W‑40 / 5W‑40 – Often used in North America and in performance‑oriented engines or hotter climates. Offers slightly thicker protection at high temperatures; must still carry the correct VW approval for your engine.

The exact grade is less critical than meeting the proper VW specification, but following the viscosity guidance in the owner’s manual ensures the best balance between engine protection, efficiency, and cold‑start behavior.

How to Confirm the Correct Oil for Your Specific A3

Checking Vehicle Documentation and Labels

Because the 2018 Audi A3 family includes multiple engines and regional variations, the most reliable way to know the exact oil your car needs is to check the documentation and identification specific to your vehicle.

Key places to verify the correct oil include:

• Owner’s manual – Lists the required VW oil specification (e.g., VW 504 00 / 507 00) and recommended viscosity ranges for your engine and climate.
• Oil filler cap – Some A3s have the oil standard printed directly on the cap, such as “VW 504 00/507 00” or a note to use “VW-approved oil only.”
• Service booklet or digital service record – Shows what oil the dealer used previously and may confirm LongLife or fixed-interval servicing.
• VIN-based dealer lookup – An Audi dealer can, using your VIN, provide the exact engine code and confirm the correct oil standard and preferred viscosity.

Cross-checking at least two of these sources—such as the owner’s manual and the information on the oil container—helps ensure you are using the correct oil for your specific engine variant.

LongLife (Flexible) vs Fixed Service Intervals

Another factor that influences oil choice in a 2018 A3 is the service regime: LongLife (variable) or fixed intervals. In many European markets, LongLife servicing allows the car’s electronics to determine oil-change timing up to roughly 30,000 km or 2 years, under ideal conditions.

For these different regimes, oil considerations generally break down as follows:

• LongLife service (flexible) – Requires high-spec LongLife oil, typically VW 504 00 (petrol) and VW 507 00 (diesel), fully synthetic, often 5W‑30. Designed to maintain performance and protect engine and emissions systems over extended intervals.
• Fixed interval service – Oil changes at set mileage/time (e.g., every 10,000–15,000 km or annually). In some markets, oils meeting VW 502 00 / 505 00 are acceptable, though dealers increasingly standardize on 504/507 oils even for fixed-interval servicing.

Using the correct LongLife spec oil is crucial if your car is set to variable service intervals; using a lower-spec oil in a LongLife regime can accelerate wear and compromise emissions equipment.

Brand Choices and Practical Recommendations

Recognizable Brands That Meet Audi Specifications

While Audi often uses its own branded oil at dealerships, many major oil manufacturers produce products that meet VW 504 00 / 507 00. Choosing a reputable, fully synthetic oil that explicitly lists the correct VW approval is more important than the name on the bottle.

Examples of commonly available oils that (in certain products/variants) meet these specs include:

• Castrol – Ranges such as EDGE or Magnatec Professional with explicit VW 504 00 / 507 00 approval.
• Mobil – Certain Mobil 1 and Mobil Super variants carrying the VW 504 00 / 507 00 specification.
• Shell – Shell Helix Ultra Professional lines meeting VW 504 00 / 507 00.
• Liqui Moly – “Top Tec” and other VW-approved oils designed specifically for VAG vehicles.
• OEM-branded Audi/VW oil – Sold at Audi dealerships and labeled with the appropriate VW standard.

Always verify the exact product’s label or datasheet: not every oil in a given brand’s range will carry VW 504 00 or 507 00, even if some do.

Basic Checklist Before You Top Up or Change Oil

To safely maintain your 2018 Audi A3’s engine, it helps to have a simple mental checklist before buying or adding oil.

Key checks include:

1. Confirm engine type – Petrol or diesel, and specific model (e.g., 1.4 TFSI, 2.0 TDI, S3, etc.). Your registration documents or VIN lookup can help.
2. Check the owner’s manual – Find the recommended VW spec (e.g., VW 504 00 / 507 00) and preferred viscosities for your climate.
3. Match the VW specification on the bottle – Ensure the oil label clearly states the VW approval you need, not just “suitable for” or “meets requirements of” without official approval.
4. Choose a reputable brand and fully synthetic oil – Especially important for turbocharged engines and LongLife service intervals.
5. Don’t mix incompatible specs – While a small top-up with the same viscosity but slightly different spec usually won’t cause immediate harm, it’s best to stick to one officially approved oil specification between changes.

Following this checklist helps you avoid using an incorrect or non‑approved oil that could compromise engine longevity or emissions components, especially the turbocharger and particulate filter.

Summary

A 2018 Audi A3 generally requires fully synthetic engine oil that meets Volkswagen/Audi standards, typically VW 504 00 for petrol engines and VW 507 00 for most diesel engines, usually in 5W‑30 (or sometimes 0W‑30, 0W‑40, or 5W‑40 depending on engine and market). The VW approval printed on the oil container is the critical factor, more so than brand or exact viscosity within the recommended range. Because the A3 lineup spans multiple engines and regions, the final authority is always the owner’s manual, oil-filler cap, and VIN-based dealer guidance. Ensuring your chosen oil matches these specifications will help maintain performance, protect the turbo and emissions systems, and support the intended service intervals for your 2018 Audi A3.

Is 5W-30 ok for Audi?

Audi recommends using synthetic oil that meets the VW 502 00 specification. Here are a few top choices: Castrol EDGE 5W-30 Full Synthetic Motor Oil: Known for its exceptional strength under high pressure, this oil provides superior protection and performance for your Audi A4.

What kind of oil does an Audi A3 take?

5W-30 oil
It’s usually recommended for most A3 cars to use 5W-30 oil, but this may change depending on your exact model and how old it is.

What kind of oil does a 2018 Audi take?

The oil for a 2018 Audi is a full synthetic oil that meets specific Audi/VW oil quality standards, with the most common viscosity being 5W-40 for many models, although some high-performance versions like the SQ5 may specify 0W-20. Always check the owner’s manual or the sticker under the hood for the exact requirement, as it can vary by engine and model. 
Common oil types for 2018 Audis

• 5W-40: This is a very common recommendation for many 2018 Audi models, such as the A4, A5, A6, and Q5 with a 2.0L turbo engine. 
• 0W-20: This viscosity is often recommended for certain high-performance engines, like the 3.0L TFSI in the S4, S5, and SQ5. 

Important considerations

• Check your manual: The most critical step is to confirm the specific oil type and specification for your vehicle’s engine by checking the owner’s manual or the sticker on the hood. 
• Use full synthetic: Audi generally requires full synthetic oil to ensure proper protection for their engines, especially under high temperatures and stress. 
• Meet the quality standard: Ensure the oil meets the specified Audi/Volkswagen oil quality standard (e.g., VW 502 00 or VW 508 00). 
• Consider the climate: If the recommended oil isn’t available, use a viscosity grade that is suitable for the climate and operating conditions where you live. 

How much oil does a 2018 Audi q3 take?

The 2018 Audi Q3’s oil capacity is approximately 4.8 quarts (4.54.54.5 liters) with a filter change, though some sources suggest it may be closer to 4.9 or 5.7 quarts. It’s best to use 4.8 quarts and then check the level, adding more as needed to reach the correct fill mark on the dipstick. The recommended oil is a full synthetic meeting the VW 502 00 specification, typically with a viscosity of 5W-40. 

• Capacity: 4.84.84.8 quarts (4.54.54.5 liters)
• Oil Type: Full synthetic
• Viscosity: SAE 5W-40
• Specification: VW 502 00