- Engine: Engine Code. A sequence of letters and numbers. This includes the engine block type and engine family, but may also include other information.
- Capacity: Capacity/Filter capacity in litres(liters). Engine oil fill quantity (Service fill).
- Intervals: Oil Change Intervals (use: normal). Engine oil should be changed at the latest after this time or after miles/km, whichever comes first.
The oil filter must be replaced every time the oil is changed, unless the car's owner's manual recommends otherwise.
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 | Engine | Capacity | Intervals |
|---|---|---|---|
| A4 1.6 (75 kW) (2001 – 2004) | ALZ | 3.5 l | 15 000 km / 12 months |
| A4 1.6 (75 kW) (2004 – 2008) | ALZ | 15 000 km / 12 months | |
| A4 1.8 Turbo (110 kW) (2001 – 2002) | AVJ | 3.5 l | 30 000 km / 24 months |
| A4 1.8 Turbo quattro (110 kW) (2001 – 2002) | AVJ | 3.5 l | 15 000 km / 12 months |
| A4 1.8 Turbo (120 kW) (2002 – 2008) | BFB | 3.7 l | 15 000 km / 12 months |
| A4 1.8 Turbo quattro (120 kW) (2002 – 2008) | BFB | 3.7 l | 15 000 km / 12 months |
| A4 1.8 Turbo (125 kW) (2001 – 2003) | AMB | 3.9 l | 15 000 km / 12 months |
| A4 1.8 Turbo quattro (125 kW) (2001 – 2005) | AMB | 3.9 l | 15 000 km / 12 months |
| A4 1.8 Turbo (140 kW) (2002 – 2005) | BEX | 3.7 l | 15 000 km / 12 months |
| A4 1.8 Turbo quattro (140 kW) (2002 – 2005) | BEX | 3.7 l | 15 000 km / 12 months |
| A4 2.0 (96 kW) (2001 – 2004) | ALT | 4.2 l | 15 000 km / 12 months |
| A4 2.0 (96 kW) (2004 – 2008) | ALT | 4.2 l | 15 000 km / 12 months |
| A4 2.0 (110 kW) (2002 – 2005) | AWA | 4.2 l | 15 000 km / 12 months |
| A4 2.0 TFSI (125 kW) (2006 – 2008) | BPJ, BYK | 4.5 l | 15 000 km / 12 months |
| A4 2.0 TFSI (147 kW) (2004 – 2008) | BGB, BPG, BWE, BWT | 4.5 l | 15 000 km / 12 months |
| A4 2.0 TFSI quattro (147 kW) (2004 – 2008) | BGB, BPG, BWE, BWT | 4.5 l | 15 000 km / 12 months |
| A4 2.0 TFSI (162 kW) (2005 – 2008) | BUL | 4.5 l | 15 000 km / 12 months |
| A4 2.0 TFSI quattro (162 kW) (2005 – 2008) | BUL | 4.5 l | 15 000 km / 12 months |
| A4 2.4 V6 (120 kW) (2001 – 2005) | AMM, APZ | 6 l | 15 000 km / 12 months |
| A4 2.4 V6 (125 kW) (2001 – 2005) | BDV | 6 l | 15 000 km / 12 months |
| A4 3.0 V6 (160 kW) (2001 – 2005) | BBJ | 6.3 l | 15 000 km / 12 months |
| A4 3.0 V6 quattro (160 kW) (2001 – 2005) | BBJ | 6.3 l | 15 000 km / 12 months |
| A4 3.0 V6 (160 kW) (2004 – 2006) | BBJ | 6.3 l | 15 000 km / 12 months |
| A4 3.0 V6 quattro (160 kW) (2004 – 2006) | BBJ | 6.3 l | 15 000 km / 12 months |
| A4 3.0 V6 (162 kW) (2001 – 2005) | ASN, AVK | 6.3 l | 15 000 km / 12 months |
| A4 3.0 V6 quattro (162 kW) (2001 – 2005) | ASN, AVK | 6.3 l | 15 000 km / 12 months |
| A4 3.2 FSI (2005 – 2008) | AUK, BKH | 8.1 l | 15 000 km / 12 months |
| A4 3.2 FSI quattro (2005 – 2008) | AUK, BKH | 8.1 l | 15 000 km / 12 months |
| S4 4.2 V8 quattro (2003 – 2008) | BBK | 9 l | 15 000 km / 12 months |
| RS4 4.2 V8 quattro (2005 – 2008) | BNS | 15 000 km / 12 months | |
| A4 1.9 TDI (74 kW) (2001 – 2004) | AVB (PD) | 4.5 / 0.5 l | 15 000 km / 12 months |
| A4 1.9 TDI (85 kW) (2004 – 2006) | BKE (PD) | 3.8 l | 15 000 km / 12 months |
| A4 1.9 TDI (85 kW) DPF (2006 – 2008) | BRB | 3.8 l | 15 000 km / 12 months |
| A4 1.9 TDI (96 kW) (2001 – 2005) | AVF, AWX (PD) | 3.7 / 0.5 l | 15 000 km / 12 months |
| A4 1.9 TDI quattro (96 kW) (2001 – 2005) | AVF, AWX (PD) | 3.7 / 0.5 l | 15 000 km / 12 months |
| A4 2.0 TDI 16V (89 kW) (2006 – 2007) | BVG | 3.8 / 0.5 l | 15 000 km / 12 months |
| A4 2.0 TDI 16V (89 kW) DPF (2006 – 2007) | BVG | 3.8 / 0.5 l | 15 000 km / 12 months |
| A4 2.0 TDI 16V (93 kW) (2005 – 2007) | BVF | 3.8 / 0.5 l | 15 000 km / 12 months |
| A4 2.0 TDI 16V (93 kW) DPF (2005 – 2007) | BVF | 3.8 / 0.5 l | 15 000 km / 12 months |
| A4 2.0 TDI 16V (100 kW) (2004 – 2006) | BNA | 3.8 l | 15 000 km / 12 months |
| A4 2.0 TDI 16V (100 kW) DPF (2005 – 2008) | BRF | 3.8 l | 15 000 km / 12 months |
| A4 2.0 TDI 8V (103 kW) DPF (2004 – 2008) | BPW (PD) | 3.8 l | 15 000 km / 12 months |
| A4 2.0 TDI 8V quattro (103 kW) DPF (2006 – 2008) | BPW (PD) | 15 000 km / 12 months | |
| A4 2.0 TDI 16V (103 kW) (2004 – 2006) | BLB | 3.8 l | 15 000 km / 12 months |
| A4 2.0 TDI 16V (103 kW) DPF (2005 – 2008) | BRE | 3.8 l | 15 000 km / 12 months |
| A4 2.0 TDI (120 kW) DPF (2006 – 2008) | BVA | 15 000 km / 12 months | |
| A4 2.0 TDI quattro (120 kW) DPF (2006 – 2008) | BVA | 15 000 km / 12 months | |
| A4 2.0 TDI (125 kW) DPF (2006 – 2008) | BRD | 15 000 km / 12 months | |
| A4 2.0 TDI quattro (125 kW) DPF (2006 – 2008) | BRD | 15 000 km / 12 months | |
| A4 2.5 TDI V6 (114 kW) (2001 – 2002) | AYM | 5.5 l | 30 000 km / 24 months |
| A4 2.5 TDI V6 (120 kW) (2002 – 2005) | BDG, BFC | 5.5 l | 30 000 km / 24 months |
| A4 2.5 TDI V6 (120 kW) (2004 – 2006) | BDG | 5.5 l | 15 000 km / 12 months |
| A4 2.5 TDI V6 (128 kW) (2003 – 2005) | BCZ | 5.5 l | 30 000 km / 24 months |
| A4 2.5 TDI V6 (132 kW) (2001 – 2005) | AKE, BAU, BDH | 5.5 l | 15 000 km / 12 months |
| A4 2.5 TDI V6 quattro (132 kW) (2001 – 2005) | AKE, BAU, BDH | 5.5 l | 15 000 km / 12 months |
| A4 2.7 TDI V6 (120 kW) DPF (2006 – 2008) | BSG | 8.2 l | 15 000 km / 12 months |
| A4 2.7 TDI V6 (132 kW) DPF (2006 – 2008) | BPP | 8.2 l | 15 000 km / 12 months |
| A4 3.0 TDI V6 quattro (150 kW) DPF (2004 – 2008) | BKN | 8-8.2 l | 15 000 km / 12 months |
| A4 3.0 TDI V6 quattro (171 kW) DPF (2006 – 2008) | ASB | 8-8.2 l | 15 000 km / 12 months |