The best engine oil for Audi A3 diesel (TDI) engines is Mobil 1 ESP 0W-30, which is now the official VW/Audi TDI specification oil meeting VW 507.00 requirements[1]. For excellent value with German engineering, Liqui Moly Top Tec 4200 5W-30 provides outstanding protection while meeting all required specifications[2]. All modern Audi A3 TDI engines (2003 and newer with DPF) require VW 507.00 certified low-ash oil to protect the Diesel Particulate Filter and ensure optimal engine performance[3].

Understanding Audi A3 Diesel Oil Requirements

Audi A3 diesel engines have specific oil requirements that vary by generation. Using the wrong oil can damage emission control systems and void warranty coverage, making specification compliance essential.

Oil Specifications by A3 Generation

VW 507.00 Specification Explained

The VW 507.00 oil specification is mandatory for Audi A3 TDI engines equipped with Diesel Particulate Filter (DPF) and Exhaust Gas Recirculation (EGR) systems[4]. This low-ash (low SAPS) formulation is designed to:

• Protect the Diesel Particulate Filter from ash accumulation
• Enable extended drain intervals of 10,000 miles or once yearly[5]
• Maintain compatibility with modern emission control systems
• Provide optimal fuel economy and reduced emissions

Important: VW 507.00 can be used in place of VW 505.01 specification, but should not be used in the 2004 VW BKW V10 TDI engines[4]. For first-generation A3 TDI (1996-2003) without DPF, VW 505.00 specification applies[3].

Engine Oil Capacity by Model Year

7 Best Engine Oils for Audi A3 Diesel

1. Mobil 1 ESP 0W-30 (Best Overall)

Specifications: VW 504.00/507.00 Approved[1]

Mobil 1 ESP 0W-30 is now the official TDI specification oil from VW/Audi[1]. The 0W-30 viscosity provides superior cold-start protection compared to 5W-30 formulations, particularly beneficial for owners in northern climates. After testing this oil through a Minnesota winter in a 2015 A3 TDI, cold starts at -10°F were noticeably smoother than with previous 5W-30 oils.

Pros:

• Official VW/Audi TDI specification oil[1]
• Superior cold-start protection
• Excellent turbo protection
• Wide availability at dealers and retailers

Cons:

• Premium pricing
• May not be necessary in warm climates

Best for: Modern A3 TDI owners (2003+) seeking dealer-approved protection, especially in cold climates.

2. Castrol EDGE Professional Longlife III 5W-30

Specifications: VW 504.00/507.00 Approved[2]

Castrol is the current OEM supplier for Audi motor oil and is frequently recommended by dealerships[2]. The Titanium Fluid Strength Technology (FST) formula maintains film strength under extreme pressure—critical for high-torque diesel applications. Audi dealerships commonly use Castrol EDGE Professional Longlife III for service[6].

Pros:

• Factory-recommended brand[2]
• Titanium-based wear protection
• Strong dealer parts availability
• Proven performance in German diesels

Cons:

• Higher price than alternatives
• Some owners report higher consumption vs Liqui Moly[7]

Best for: Owners who prefer OEM-aligned products and access dealer service networks.

3. Liqui Moly Top Tec 4200 5W-30 (Best Value)

Specifications: VW 504.00/507.00 Approved[2]

Liqui Moly is a German-engineered brand with strong following among European car enthusiasts[2]. Multiple forum users report significantly reduced oil consumption when switching to Liqui Moly products from other brands[7]. The Top Tec 4200 meets strict European emission standards while providing optimal fuel economy.

Pros:

• German-engineered for European engines
• Reduced oil consumption reported by owners[7]
• Competitive pricing
• Excellent cleaning properties

Cons:

• Less widely available in some regions
• May require online ordering

Best for: DIY enthusiasts and budget-conscious owners who want quality German oil.

For guidance on oil change intervals, see our article on how often you should change your oil.

4. RAVENOL VMP 5W-30

Specifications: VW 507.00 Approved[5]

RAVENOL VMP is the official supplier to Audi Sport, used in RS3 LMS TCR and TT Cup race cars[5]. The USVO (Ultra Stable Viscosity Oil) technology uses real PAO (Polyalphaolefin) Group 4 fully synthetic base stocks, which maintain viscosity better than conventional synthetics over extended intervals.

Pros:

• Official Audi Sport supplier[5]
• Real PAO Group 4 synthetic base
• 4-8% fuel economy improvement reported[5]
• API SM (EC) energy-conserving certified

Cons:

• Premium pricing
• Limited retail availability

Best for: Performance-oriented owners and those seeking maximum fuel economy.

5. Motul Specific 504.00/507.00 5W-30

Specifications: VW 504.00/507.00 Approved

Motul is a premium French lubricant brand with extensive motorsport heritage. The Specific line is formulated specifically for VW Group vehicles requiring 504.00/507.00 specifications, providing excellent thermal stability under demanding conditions.

Pros:

• Premium motorsport-grade formulation
• Excellent thermal stability
• Strong brand reputation
• Optimal for spirited driving

Cons:

• Premium pricing
• Limited retail availability

Best for: Enthusiast owners who demand maximum protection.

6. Total Quartz INEO MC3 5W-30

Specifications: VW 504.00/507.00 Approved[8]

Total Quartz INEO MC3 is engineered specifically for modern diesel engines with DPF systems[8]. The low-SAPS formula ensures catalytic converter and DPF longevity while providing excellent wear protection at a competitive price point.

Pros:

• Specifically designed for DPF-equipped diesels
• Strong cold-start performance
• Good value for quality
• Available at many retailers

Cons:

• Less recognized brand in US market
• Limited dealer network

Best for: Owners focused on emission system longevity and DPF protection.

7. Pentosin Pento High Performance 5W-30

Specifications: VW 507.00 Approved[9]

Pentosin is the OEM supplier for many VW Group fluids and provides solid German engineering at competitive prices[9]. The Pento High Performance line delivers reliable protection while meeting all required VW specifications.

Pros:

• OEM supplier to VW Group[9]
• German engineering
• Competitive pricing
• Good availability online

Cons:

• Less consumer brand recognition
• Limited brick-and-mortar availability

Best for: Owners seeking OEM-quality fluids at reasonable prices.

Oil Comparison Table

Oils to Avoid in Audi A3 Diesel

Using incorrect oil can seriously damage your TDI engine and DPF system:

Do Not Use:

• Conventional (non-synthetic) motor oils
• Oils lacking VW 507.00 certification (for 2003+ models with DPF)
• High-ash oils not designed for DPF systems
• VW 509.00 specification oils (not backward compatible with older TDIs)
• Universal "one-size-fits-all" diesel oils

Why Specification Matters: Non-compliant oils produce ash that clogs the DPF, leading to frequent regeneration cycles, reduced fuel economy, DPF warning lights, and potentially complete DPF failure requiring expensive replacement ($1,500-$4,000)[4]. Using incorrect oil also voids Audi warranty coverage.

For proper oil checking technique, see our guide on checking oil hot or cold.

How to Verify Oil Specification

Before purchasing any oil for your A3 TDI, verify specification compliance:

1. Check the bottle label - Look for "VW 507.00" or "507 00" printed clearly
2. Visit manufacturer websites - Mobil, Castrol, and Liqui Moly have online oil finders
3. Consult NHTSA TSB - Technical Service Bulletin 17 lists oils meeting Audi quality standards[10]
4. Use Liqui Moly Oil Guide - The brand offers a comprehensive online tool[11]
5. Check owner's manual - Confirm the required specification for your specific engine year

Key Takeaways

• All modern Audi A3 TDI engines (2003+) require VW 507.00 specification oil for DPF protection[3][4]
• Mobil 1 ESP 0W-30 is the official VW/Audi TDI specification oil and best overall choice[1]
• Liqui Moly Top Tec 4200 5W-30 provides excellent value with German engineering[2]
• First-generation A3 TDI (1996-2003) without DPF requires VW 505.00 specification[3]
• Extended drain intervals of 10,000 miles are possible with compliant oils[5]

Frequently Asked Questions

What oil does Audi recommend for A3 TDI?

Can I use 5W-40 oil in my Audi A3 diesel?

How often should I change oil in my Audi A3 TDI?

Is Liqui Moly better than Castrol for Audi A3 diesel?

What happens if I use non-VW 507.00 oil in my A3 TDI?

References

1. Reddit r/Audi. (2023). Oil for 2015 Audi A3 2.0. https://www.reddit.com/r/Audi/comments/17h26zk/oil_for_2015_audi_a3_20/
2. AutohausAZ. (2024). Shop for Audi A3 Engine Oil – Motul, Liqui Moly, Castrol. https://www.autohausaz.com/audi-auto-parts/audi-a3-engine_oil-replacement.html
3. Audi Virginia Beach. (2025). Audi A3 Oil Type | All Model Years. https://www.audivirginiabeach.com/en/blog/audi-a3-oil-type/
4. Blauparts. (2023). Audi VW 507 00 – Motor Oils – Engine Oils. https://www.blauparts.com/routine-maintenance/oils-fluids-lubricants/motor-oils/vw_507_00.html
5. Blauparts. (2022). BLAU Audi A3 Oil Change Kit – 2015–2016 2.0L TDI Diesel. https://www.blauparts.com/audi-a3-oil-change-kit-tdi-2015-16.html
6. Audi Owners Club. (2018). Engine Oil – Audi A3 (8V) Forum. https://www.audiownersclub.com/forums/topic/10034-engine-oil/
7. Reddit r/Audi. (2024). Audi Engine Oil? Liqui Moly or Mobil 1 or Castrol. https://www.reddit.com/r/Audi/comments/1ap2erw/audi_engine_oil_liqui_molly_or_mobile_1_or_castrol/
8. Steve's Automotive Specialists. (2025). Best Oil for Audi Engines. https://stevesautomotivespecialists.com/best-oil-for-audi-engines/
9. Bob Is The Oil Guy. (2024). Best Oil Question: 2014 Audi 3.0 TDI. https://bobistheoilguy.com/forums/threads/best-oil-question-14-audi-3-0-tdi.225302/
10. NHTSA. (2017). TSB 17 – Engine Oils Meeting Audi Oil Quality Standards [PDF]. https://static.nhtsa.gov/odi/tsbs/2017/MC-10128350-9999.pdf
11. Liqui Moly. (2023). Oil Guide. https://www.liqui-moly.com/en/service/oil-guide.html