AUDI S4
B6 / B7 / B8 / B8 (facelift) / 2004-2024 / Sedan / Avant (wagon) / Sedan / Avant (Wagon) / Sedan / Avant / Sedan
Year and trim selector
Choose the exact year and trim to see engine, oil and service details.
2004 AUDI S4 AAN (8E)
8E / AAN / 2.7L bi-turbo V6 gasoline engine, main engine code AAN in most major markets.
2005 AUDI S4 BAU/BFB (8E)
8E / BAU, BFB, BHV / 3.0L Supercharged V6 (single variant globally with minor market tuning differences)
2008 AUDI S4 E8/EA855 (B7)
B7 / E8, EA855, BENU / 4.2L V8 naturally aspirated engine, 90-degree V8 with DOHC 40 valves, used across markets with slight tuning variations.
2009 AUDI S4 ENA/EJB (B8)
B8 / ENA, EJB, ENG / 3.0L supercharged V6 for most markets, with variations in power output based on market and emission standards. Europe and North America main markets.
2011 AUDI S4 CAT/CWGA (8K)
8K / CAT, CWGA / 3.0L supercharged V6 (CAT in Europe, CWGA in North America), high-performance variant of the Audi A4 B8 platform
2013 AUDI S4 CDNC/CTHE (8K)
8K / CDNC, CTHE / 3.0L supercharged V6, available in two primary versions with market-specific tuning
2016 AUDI S4 CGWB (8W)
8W / CGWB / 3.0L V6 supercharged petrol engine with direct injection
2019 AUDI S4 EA839 DE S4 (8W)
8W / EA839 DE S4 / 3.0L turbocharged V6 with mild-hybrid (MHEV) system, direct injection, and variable valve timing
2024 AUDI S4 CDUC/CDUD (B9 LCI)
B9 LCI / CDUC, CDUD, CREC / 3.0L V6 TFSI turbocharged petrol engine available globally with output variations depending on market emissions regulations; primarily a 3.0L V6 with mild-hybrid system supporting start-stop and torque assist.
Engine codes by year
| Year | Trim | Engine codes | Displacement | Fuel system |
|---|---|---|---|---|
| 2004 | technical-profile | AAN | 2671 cc | Multipoint fuel injection with Bosch ME7.1 management |
| 2005 | technical-profile | BAU, BFB, BHV | 2995 cc | Multi-point fuel injection with supercharger |
| 2008 | technical-profile | E8, EA855, BENU | 4163 cc | Sequential multipoint fuel injection |
| 2009 | technical-profile | ENA, EJB, ENG | 2995 cc | Direct fuel injection with turbocharging (supercharging in B8 S4) |
| 2011 | technical-profile | CAT, CWGA | 2995 cc | Direct fuel injection |
| 2013 | technical-profile | CDNC, CTHE | 2995 cc | Direct and multipoint fuel injection |
| 2016 | technical-profile | CGWB | 2995 cc | Direct injection with high-pressure fuel pump |
| 2019 | technical-profile | EA839 DE S4 | 2995 cc | Direct fuel injection |
| 2024 | technical-profile | CDUC, CDUD, CREC | 2995 cc | Direct injection with turbocharging |
Oil capacity by engine
| Year | Engine codes | Oil type | Oil capacity | Fluid |
|---|---|---|---|---|
| 2004 | AAN | 0W-40 synthetic engine oil, meeting VW 502 00 / 505 00 specs | Approximately 7.5 liters (service fill including oil filter change) | Synthetic automatic transmission fluid or manual gear oil per VW standards |
| 2005 | BAU, BFB, BHV | Fully synthetic 5W-40 engine oil meeting VW 502 00 / 505 00 standards | 6.0 liters (including oil filter), service fill | Audi G 052 162 A2 (automatic), manual uses VW G 052 512 A2 |
| 2008 | E8, EA855, BENU | Synthetic 5W-40 or 5W-30 meeting VW 502 00 specs | 7.5 liters (including filter) - service fill capacity | VW G 052 162 A2 for Tiptronic |
| 2009 | ENA, EJB, ENG | VW 502 00 / Audi VW-approved synthetic 5W-40 | Approx. 7.0 liters (service fill including filter replacement) | VW G 060 162 A2 for DSG/S tronic |
| 2011 | CAT, CWGA | Audi VW 502 00 or equivalent synthetic 5W-40 | 7.2 liters (including oil filter); service fill volume | Audi VW G 052 182 A2 (S Tronic) |
| 2013 | CDNC, CTHE | Fully synthetic 5W-40 or 5W-30 oil meeting VW 502 00/505 00 specifications | 7.5 liters (service fill including filter change) | Audi G 052 182 A2/DQ500 synthetic fluid |
| 2016 | CGWB | Audi VW 502 00 / 504 00 synthetic SAE 5W-40 | 6.6 liters (including filter), full service-fill capacity | Audi G 052 182 A2 or VW equivalent |
| 2019 | EA839 DE S4 | SAE 5W-40 synthetic engine oil meeting VW 502 00 specification | 7.7 liters (service-fill with oil filter change) | Audi specified ATF (per service manual recommendation) |
| 2024 | CDUC, CDUD, CREC | VW 502 00 (full synthetic 5W-40 or 0W-40 depending on ambient temperatures) | 7.7 liters (service fill, including filter change) | VW G 052 182 A2 synthetic |
Technical specifications
- Engines: AAN, BAU, BFB, BHV, E8, EA855, BENU, ENA, EJB, ENG, CAT, CWGA
- Transmissions: 6-speed manual with Quattro all-wheel drive, 5-speed Tiptronic automatic (market dependent), Synthetic automatic transmission fluid or manual gear oil per VW standards, 6-speed manual (Europe and select markets only), 6-speed Tiptronic automatic (available in North America and other markets), Audi G 052 162 A2 (automatic), manual uses VW G 052 512 A2, 6-speed manual (available in selected markets including Europe), 6-speed Tiptronic automatic
- Tire sizes: 225/45 R17, 225/40 R18 (market dependent), 225/45ZR17 (standard), 245/40ZR18 (optional), Front: 245/40ZR18, Rear: 245/40ZR18, 255/35 ZR18, 265/30 ZR19 depending on wheel package, 245/40 R18, 255/35 R19 (optional)
- Bolt pattern: Verify by exact trim and wheel package
- Wheel torque: Verify by VIN and wheel package
- Battery: Verify by engine, market and equipment package
Fluids and service data
- Engine oil: 0W-40 synthetic engine oil, meeting VW 502 00 / 505 00 specs / Fully synthetic 5W-40 engine oil meeting VW 502 00 / 505 00 standards / Synthetic 5W-40 or 5W-30 meeting VW 502 00 specs / VW 502 00 / Audi VW-approved synthetic 5W-40
- Transmission fluid: Synthetic automatic transmission fluid or manual gear oil per VW standards / Audi G 052 162 A2 (automatic), manual uses VW G 052 512 A2 / VW G 052 162 A2 for Tiptronic / VW G 060 162 A2 for DSG/S tronic
- Coolant: Approximately 10 liters / 10 liters (approximate, varies slightly by market) / Approx. 12 liters / Approx. 9 liters
- Brake fluid: DOT 4, recommended to change every 2 years / DOT 4 / DOT 4 high performance / DOT 4 (change typically every 2 years recommended)
Known problems
- Timing chain tensioner wear leading to potential engine noise or failure
- High-pressure fuel pump issues in some markets
- Carbon buildup on intake valves
- Supercharger clutch failure
- Timing chain tensioner issues
- Timing chain tensioner wear potentially leading to rattle
- Carbon buildup on intake valves due to direct injection
- Supercharger pulley wear
- Carbon buildup on intake valves (direct injection)
- Supercharger belt wear and failure
- Carbon buildup on intake valves (direct injection V6)
- Timing chain tensioner noise on early models