Audi A6
C4 / C5 / C5 (facelift) / C6 / 1996-2024 / Sedan / Avant / Sedan / Avant (station wagon) / Sedan / Avant (wagon) / Sedan
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Choose the exact year and trim to see engine, oil and service details.
1996 Audi A6 ABK/ACK (C4)
C4 / ABK, ACK, ABH, AFB, AAR, AAT / Range of 4-cylinder turbodiesel and 5-cylinder, 6-cylinder gasoline engines used globally with market variations; 2.6L V6 and early 2.8L V6 were common; diesel versions mainly 2.5L inline-5 TDI engines.
1999 Audi A6 ABH/AAN (C5)
C5 / ABH, AAN, AKE, ANB, AWT, AJD, BPP, APB / The 1999 Audi A6 C5 featured a range of inline-5 and V6 petrol and diesel engines. Petrol engines included a 2.4L V6 (ABH), a 2.8L V6 (AAN, AKE), and various 2.8L V6 turbocharged variants. Diesel options included the 1.9L TDI (AJD, BPP) and 2.5L V6 TDI (ANB, AWT). Engine availability varied depending on market.
2001 Audi A6 ALF/AHA (C5)
C5 / ALF, AHA, AMM, AWN, Benzin 2.4L V6 (ALF, AHA), Benzin 2.7L V6 Biturbo (AMM), Diesel 1.9L TDI (AWN) / Available with 1.9L TDI inline-4, 2.4L V6 petrol and 2.7L V6 biturbo petrol engines; regional variations apply, notably higher performance biturbo for Europe and North America
2002 Audi A6 AAN/AMM (C5)
C5 / AAN, AMM, AJL, ATQ, AWT, BAC, BEX, ARH, ASB / Range of inline-4, V6, V8 petrol and inline-5, V6 TDI diesels depending on market
2004 Audi A6 APB/ARE (C5)
C5 / APB, ARE, AVF, AJL, BEX, ASB / Common engines include the 1.8T 4-cylinder (APB), 2.4 V6 (AJL), 2.7 BiT V6 (BEX), and 3.0 V6 (ASB). The 2.5 TDI (ARE) was available in European markets. Power and features vary significantly by market and fuel type.
2005 Audi A6 BPP/ASB (C6)
C6 / BPP, ASB, BNG, BAT, BVA, BKE, BNM, BMJ / The 2005 Audi A6 (C6) was offered globally with a range of petrol V6 and V8 engines and diesel V6 engines, differing by market. Petrol engines included the 2.4 V6 (BPP), 2.7 Bi-Turbo V6 (ASB), 3.2 V6 (BNG), 4.2 V8 (BAT), and 4.2 V8 (BVA) for NA market. Diesel options included 2.7 TDI V6 (BKE) and 3.0 TDI V6 (BMJ). Market variation affected exact engine availability.
2006 Audi A6 BPP (2.4L V6, 2006 Europe)/BCM (3.2L V6 FSI, 2006 Europe/North America) (C6)
C6 / BPP (2.4L V6, 2006 Europe), BCM (3.2L V6 FSI, 2006 Europe/North America), BKN (3.0L V6 TDI, 2006 Europe), BNA (2.0L I4 TFSI, 2006 Europe) / Range of 2.0L I4 TFSI, 2.4L V6, 3.2L V6 FSI petrol engines and 3.0L V6 TDI diesel. Market-specific availability; diesel primarily Europe, petrol worldwide.
2007 Audi A6 BPP/ASB (4F)
4F / BPP, ASB, BKP, CGWA, CAHA / Available with 2.0L TFSI I4, 2.4L V6, 3.2L V6 FSI, 2.7L V6 TDI, and 3.0L V6 TDI diesel engines, varying by market. Petrol engines range from approx. 165 hp to 255 hp. Diesel engines from approx. 180 hp to 233 hp.
2008 Audi A6 BPP/BMK (4F)
4F / BPP, BMK, CDNC, CAGC, CAPA, CAJA, CPHA / Range includes V6 petrol, V8 petrol, and diesel engines with turbocharging on diesels; engine availability varies by market.
2009 Audi A6 BPW (2.0 TFSI I4)/BMK (3.2 FSI V6) (4F)
4F / BPW (2.0 TFSI I4), BMK (3.2 FSI V6), CGK (3.0 TDI V6) / The 2009 Audi A6 C6 offered multiple engines globally: a 2.0L turbocharged inline-4 petrol (BPW), a 3.2L naturally aspirated V6 petrol (BMK), and a 3.0L turbocharged V6 diesel (CGK), with availability varying by market.
2011 Audi A6 CAHA/CDUC (C7)
C7 / CAHA, CDUC, CJXC, CCWC, CAKE, CGLC, CVJA / 2011 Audi A6 C7 generation features a range of petrol and diesel engines globally including 2.0L TFSI (CAHA), 3.0L supercharged V6 (CJXC), and various TDI diesels (CDUC, CCWC, CGLC, CVJA) with EU markets receiving more diesel options.
2012 Audi A6 CAHA/CJGD (C7)
C7 / CAHA, CJGD, CGWD, CDUC, CKHB, CMKA, CRLB, CGLB, CKVA, CHHA, CKUB, CECA / Available engines included 2.0L TFSI inline-4, 3.0L supercharged V6, 3.0L TDI V6, and 4.2L naturally aspirated V8 in select markets. Diesel variants mainly for Europe and some other markets; gasoline engines global.
2017 Audi A6 CJEA/CETD (4G)
4G / CJEA, CETD, CTHA, CRLB, CTSA, CPTA, CYMC, DAXB / Available engines in 2017 included 2.0L inline-4 TFSI (CJEA, CETD), 3.0L V6 supercharged TFSI (CYMC), 3.0L V6 TDI diesel engines (CTHA, CRLB, CTSA), and 2.0L TDI diesel (CPTA) with regional market variations such as diesel engines in Europe and petrol predominance in North America and China.
2018 Audi A6 CNGA/CSLA (4G)
4G / CNGA, CSLA, CSLB, CYNB, F4C, DELA, DELA2, DNWA / Available with multiple petrol and diesel engines; common petrol variants include 2.0L TFSI (CNGA), 3.0L supercharged V6 (CSLA/CSLB), diesel variants include 2.0L TDI (CYNB) and 3.0L TDI V6 (DELA/DELA2). Engine availability and emissions spec depend on region.
2020 Audi A6 CNWA/CVUA (4K)
4K / CNWA, CVUA, CPTC, CYVC / The 2020 Audi A6 C8 is equipped with a range of engines depending on the market, including 2.0L inline-4 turbocharged (CNWA - 252 hp, CVUA - 201 hp), and 3.0L V6 turbocharged mild-hybrid units (CPTC - 340 hp, CYVC diesel). Gasoline engines typically feature direct injection and turbocharging; diesel engines use common rail injection.
2021 Audi A6 CWGA/CWGB (4K)
4K / CWGA, CWGB, CWGC, CWGD, CWGE, CYTC, CNJA / The 2021 Audi A6 (C8) features a range of turbocharged petrol and diesel engines, including 2.0L TFSI inline-4 and 3.0L TFSI V6 variants, alongside 2.0L and 3.0L TDI diesel options. Engine offerings vary by market, with petrol engines more common in North America and diesel engines in Europe.
2022 Audi A6 CHVA/CKFB (4K)
4K / CHVA, CKFB, CWGA, CSWA, DFGA, DHK / Range of 2.0L TFSI inline-4, 3.0L TFSI V6 mild hybrid petrol engines and 3.0L TDI V6 diesel engines with mild hybrid system; engine availability varies by market.
2024 Audi A6 CZPA/CZPB (C8 LWB (facelift))
C8 LWB (facelift) / CZPA, CZPB, CZPC, CZPD, DETA, DETB / Longitudinal-mounted turbocharged petrol and diesel mild-hybrid engines; 2.0L inline-4 TFSI, 3.0L V6 TFSI petrol and 3.0L V6 TDI mild hybrid
Engine codes by year
| Year | Trim | Engine codes | Displacement | Fuel system |
|---|---|---|---|---|
| 1996 | technical-profile | ABK, ACK, ABH, AFB, AAR, AAT | 2.6L to 2.8L gasoline; 2.5L turbodiesel | Multi-point fuel injection (gasoline), direct injection (TDI diesel) |
| 1999 | technical-profile | ABH, AAN, AKE, ANB, AWT, AJD, BPP, APB | 1.9 - 2.8 liters | Multipoint fuel injection (petrol), Common rail direct injection (diesel) |
| 2001 | technical-profile | ALF, AHA, AMM, AWN, Benzin 2.4L V6 (ALF, AHA), Benzin 2.7L V6 Biturbo (AMM), Diesel 1.9L TDI (AWN) | 1896 cc (TDI), 2393 cc (2.4 V6), 2671 cc (2.7 biturbo V6) | Electronic fuel injection for petrol; common rail direct injection for diesel |
| 2002 | technical-profile | AAN, AMM, AJL, ATQ, AWT, BAC, BEX, ARH, ASB | 2.4L to 4.2L petrol, 1.9L to 2.5L TDI diesel | Multi-point fuel injection for petrol, common rail diesel injection (TDI) |
| 2004 | technical-profile | APB, ARE, AVF, AJL, BEX, ASB | 1781cc - 2700cc for petrol, 2461cc - 2967cc for diesel variants | Fuel injection (direct for diesel, multipoint for petrol) |
| 2005 | technical-profile | BPP, ASB, BNG, BAT, BVA, BKE, BNM, BMJ | 2.4L to 4.2L petrol, 2.7L to 3.0L diesel | Multi-point fuel injection (petrol), Common rail direct injection (diesel) |
| 2006 | technical-profile | BPP (2.4L V6, 2006 Europe), BCM (3.2L V6 FSI, 2006 Europe/North America), BKN (3.0L V6 TDI, 2006 Europe), BNA (2.0L I4 TFSI, 2006 Europe) | 1984 to 3189 cc depending on engine | Multi-point fuel injection for petrol; common rail direct injection for diesels |
| 2007 | technical-profile | BPP, ASB, BKP, CGWA, CAHA | 1984 cc to 2967 cc | Direct fuel injection (FSI) for petrol, common rail injection for diesel |
| 2008 | technical-profile | BPP, BMK, CDNC, CAGC, CAPA, CAJA, CPHA | 2.8L V6 (BPP, BMK), 3.2L V6 (CDNC), 4.2L V8 (CAGC), 3.0L V6 TDI (CAPA, CAJA, CPHA) | Multi-point fuel injection (petrol), Common rail direct injection (diesel) |
| 2009 | technical-profile | BPW (2.0 TFSI I4), BMK (3.2 FSI V6), CGK (3.0 TDI V6) | 1984cc (2.0 TFSI), 3123cc (3.2 FSI), 2967cc (3.0 TDI) | Direct fuel injection (FSI for petrol, common rail for diesel) |
| 2011 | technical-profile | CAHA, CDUC, CJXC, CCWC, CAKE, CGLC, CVJA | 2.0L to 3.0L | Fuel injection with direct injection for TFSI petrol; common rail for TDI diesel engines |
| 2012 | technical-profile | CAHA, CJGD, CGWD, CDUC, CKHB, CMKA, CRLB, CGLB, CKVA, CHHA, CKUB, CECA | 1984 to 4163 cc depending on engine variant | Direct injection (TFSI for petrol), common-rail injection (TDI diesel) |
| 2017 | technical-profile | CJEA, CETD, CTHA, CRLB, CTSA, CPTA, CYMC, DAXB | 1968 - 2995 cc | Direct fuel injection with turbocharging on petrol engines; common rail direct injection on diesel engines |
| 2018 | technical-profile | CNGA, CSLA, CSLB, CYNB, F4C, DELA, DELA2, DNWA | 1984 cc to 2995 cc | Direct injection (TFSI for petrol, common rail for diesel) |
| 2020 | technical-profile | CNWA, CVUA, CPTC, CYVC | 1984 cc (2.0L I4), 2995 cc (3.0L V6) | Direct injection turbocharged gasoline; High-pressure common-rail diesel |
| 2021 | technical-profile | CWGA, CWGB, CWGC, CWGD, CWGE, CYTC, CNJA | 1984 cc to 2995 cc | Direct injection (TFSI for petrol, common rail for diesel) |
| 2022 | technical-profile | CHVA, CKFB, CWGA, CSWA, DFGA, DHK | 1984 cc to 2967 cc | Direct fuel injection (TFSI for petrol, Common rail for diesel) |
| 2024 | technical-profile | CZPA, CZPB, CZPC, CZPD, DETA, DETB | 1984 cc (2.0L), 2995 cc (3.0L V6) | Direct fuel injection (FSI for petrol, common rail for diesel) |
Oil capacity by engine
| Year | Engine codes | Oil type | Oil capacity | Fluid |
|---|---|---|---|---|
| 1996 | ABK, ACK, ABH, AFB, AAR, AAT | Fully synthetic 5W-40 | Approx. 5.5 liters with filter change (varies by engine code) | Audi approved ATF or specify by transmission model |
| 1999 | ABH, AAN, AKE, ANB, AWT, AJD, BPP, APB | API grade according to VW 502 00 / 505 00 specifications | Approx. 6.5 liters including oil filter (service-fill), varies by engine | Audi G 052 162 A2 (automatic), VW TL 521 62 (manual) |
| 2001 | ALF, AHA, AMM, AWN, Benzin 2.4L V6 (ALF, AHA), Benzin 2.7L V6 Biturbo (AMM), Diesel 1.9L TDI (AWN) | 5W-40 fully synthetic | Approx. 6.5 liters including filter (service-fill, replace filter every oil change) | Audi-approved CVT/automatic transmission fluid |
| 2002 | AAN, AMM, AJL, ATQ, AWT, BAC, BEX, ARH, ASB | VW 502 00 / 505 00 approved synthetic oil | Approx 6.5 liters including filter (service fill) | VW G 052 162 A2 or equivalent for DSG/automatic |
| 2004 | APB, ARE, AVF, AJL, BEX, ASB | Fully synthetic, VW 502 00 / Audi approved oil grades | Approximately 6-7 liters (service fill plus filter change depending on engine) | Audi G 052 162 / VW TL 521 82 for automatic and CVT |
| 2005 | BPP, ASB, BNG, BAT, BVA, BKE, BNM, BMJ | Fully synthetic 5W-40, meeting VW 502 00 / 505 00 standards | Approx. 6.5 liters (including filter) - service fill | Audi G 052 182 A2 (Tiptronic), vary by transmission type |
| 2006 | BPP (2.4L V6, 2006 Europe), BCM (3.2L V6 FSI, 2006 Europe/North America), BKN (3.0L V6 TDI, 2006 Europe), BNA (2.0L I4 TFSI, 2006 Europe) | Audi 504 00 / 507 00 spec synthetic oils recommended | Approx. 6.3 liters (service fill including filter) for 3.2L V6 FSI engine | Audi specified automatic transmission fluid or CVT fluid depending on transmission |
| 2007 | BPP, ASB, BKP, CGWA, CAHA | VW/Audi 502.00 spec for petrol, VW 507.00 spec for diesel | Approx. 6.5 liters full service fill with filter change (varies by engine) | VW G 052 162 A2 (Tiptronic) |
| 2008 | BPP, BMK, CDNC, CAGC, CAPA, CAJA, CPHA | Fully synthetic 5W-40 or 5W-30 meeting Audi VW 502 00/505 00 specs | Approx. 6.5 liters service-fill with filter change (varies by engine code) | Audi Genuine ATF or equivalent, change interval ~60,000 km (varies) |
| 2009 | BPW (2.0 TFSI I4), BMK (3.2 FSI V6), CGK (3.0 TDI V6) | Fully synthetic engine oil 5W-40; Audi VW 502 00 (petrol), VW 507 00 (diesel) | Approximately 6.5 liters (including filter) - service fill | Audi recommended ATF for Tiptronic; CVT fluid for Multitronic |
| 2011 | CAHA, CDUC, CJXC, CCWC, CAKE, CGLC, CVJA | Audi VW 504 00 / 507 00 approved synthetic oil | Approx. 6.0 liters service-fill including filter | VW G 052 182 A2 (S-Tronic), VW G 055 025 A2 (Tiptronic) |
| 2012 | CAHA, CJGD, CGWD, CDUC, CKHB, CMKA, CRLB, CGLB, CKVA, CHHA, CKUB, CECA | Audi approved synthetic 5W-40 or 5W-30 engine oil meeting VW 504 00/507 00 standards | Approx. 6.5 liters total service fill (varies by engine); includes filter replacement | Audi/VW approved fluid (e.g., G 052 182 A2 for DSG) |
| 2017 | CJEA, CETD, CTHA, CRLB, CTSA, CPTA, CYMC, DAXB | Audi VW 502 00 (petrol), Audi VW 507 00 (diesel) | Approx. 6.5 liters (including filter). Service fill including filter change is engine specific; consult manual for exact amount per engine. | Audi G 052 182 synthetic transmission fluid (S tronic); Consult service manual |
| 2018 | CNGA, CSLA, CSLB, CYNB, F4C, DELA, DELA2, DNWA | Fully synthetic 5W-30 or 5W-40 engine oil meeting VW 502 00 / 504 00 or VW 507 00 standards depending on engine type | Approx. 6.5 liters total, service fill approx. 5.5 liters after oil and filter change (varies by engine and market) | Audi specified synthetic transmission fluid for DSG or Tiptronic systems |
| 2020 | CNWA, CVUA, CPTC, CYVC | VW 507 00 / Audi VW Approved synthetic 5W-30 fully synthetic | approx. 6.5 liters including filter (service fill, varies by engine) | Audi G 052 182 A2 (S tronic), Audi G 060 162 A2 (Tiptronic) |
| 2021 | CWGA, CWGB, CWGC, CWGD, CWGE, CYTC, CNJA | Audi/VW 507 00 compliant synthetic oil | Approx. 6.2 liters service-fill including oil filter; exact quantity depends on engine variant | Audi G 052 182 A2 or equivalent |
| 2022 | CHVA, CKFB, CWGA, CSWA, DFGA, DHK | VW 508.00 / 509.00 compliant synthetic oil | Approx. 6.3 liters service-fill; includes oil filter replacement | Audi/Volkswagen G 055 150 A2 synthetic fluid recommended |
| 2024 | CZPA, CZPB, CZPC, CZPD, DETA, DETB | Audi VW 506 01 / 504 00 approved synthetic SAE 0W-30 or 5W-30 engine oil | Approx. 6.5 liters (service fill, includes oil filter change) | Audi G 052 182 transmission fluid (for DSG); Audi G 060 162 A2 for Tiptronic |
Technical specifications
- Engines: ABK, ACK, ABH, AFB, AAR, AAT, AAN, AKE, ANB, AWT, AJD, BPP
- Transmissions: 5-speed manual available on most engines, 4-speed Tiptronic automatic widely offered, Audi approved ATF or specify by transmission model, 5-speed manual (most petrol), 6-speed manual (some turbo/4WD versions), 4-speed or 5-speed Tiptronic automatic depending on engine and market, Audi G 052 162 A2 (automatic), VW TL 521 62 (manual), 5-speed manual (some markets), 4-speed automatic Tiptronic or CVT variants in some markets
- Tire sizes: 205/60 R15, 215/55 R16, 225/50 R16, 225/45 R17, 225/55 R16, 235/45 R17, 245/40 R18 depending on wheel option, 245/40 R18, 255/40 R18, varies by trim
- 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: Fully synthetic 5W-40 / API grade according to VW 502 00 / 505 00 specifications / 5W-40 fully synthetic / VW 502 00 / 505 00 approved synthetic oil
- Transmission fluid: Audi approved ATF or specify by transmission model / Audi G 052 162 A2 (automatic), VW TL 521 62 (manual) / Audi-approved CVT/automatic transmission fluid / VW G 052 162 A2 or equivalent for DSG/automatic
- Coolant: Approx. 9 liters / Approx. 10 liters, including reserve tank / Approximately 9-10 liters / Approx 9 liters
- Brake fluid: DOT 4 / DOT 4 recommended / DOT 4, changed every 2 years recommended / DOT 4 minimum
Known problems
- Coolant leaks from radiator and water pump
- Electrical issues in instrument cluster
- Timing chain tensioner wear leading to rattle
- Oil leaks from camshaft seals
- Coolant leaks from water pump
- Timing chain tensioner wear in early V6 engines
- Timing belt wear and potential failure
- Oil seal leaks on V6 engines
- Turbocharger issues on 2.7 biturbo
- DPF clogging on diesel variants
- Variable valve timing unit wear
- Mass air flow sensor failures