| A4 B6 1.8 TSaloon | 2000 – 2002 | 1.8L AVJ | 150 hp (110 kW) | Petrol | Front-Wheel Drive |
| A4 B6 2.0Saloon | 2000 – 2004 | 2.0L ALT | 130 hp (96 kW) | Petrol | Front-Wheel Drive |
| A4 B6 1.8 T quattroSaloon | 2000 – 2002 | 1.8L | 150 hp (110 kW) | Petrol | All-wheel Drive |
| A4 B6 3.0Saloon | 2000 – 2004 | 3.0L | 220 hp (162 kW) | Petrol | Front-Wheel Drive |
| A4 B6 3.0 quattroSaloon | 2000 – 2004 | 3.0L | 220 hp (162 kW) | Petrol | All-wheel Drive |
| A4 B6 1.9 TDISaloon | 2000 – 2004 | 1.9L | 130 hp (96 kW) | Diesel | Front-Wheel Drive |
| A4 B6 2.5 TDI quattroSaloon | 2000 – 2004 | 2.5L | 180 hp (132 kW) | Diesel | All-wheel Drive |
| A4 B6 1.6Saloon | 2000 – 2004 | 1.6L ALZ | 102 hp (75 kW) | Petrol | Front-Wheel Drive |
| A4 B6 2.5 TDISaloon | 2001 – 2002 | 2.5L AYM | 155 hp (114 kW) | Diesel | Front-Wheel Drive |
| A4 B6 Avant 1.6Estate | 2001 – 2004 | 1.6L ALZ | 102 hp (75 kW) | Petrol | Front-Wheel Drive |
| A4 B6 Avant 2.0Estate | 2001 – 2004 | 2.0L ALT | 130 hp (96 kW) | Petrol | Front-Wheel Drive |
| A4 B6 Avant 1.8 TEstate | 2001 – 2002 | 1.8L AVJ | 150 hp (110 kW) | Petrol | Front-Wheel Drive |
| A4 B6 Avant 1.9 TDIEstate | 2001 – 2004 | 1.9L AVF | 130 hp (96 kW) | Diesel | Front-Wheel Drive |
| A4 B6 Avant 1.9 TDIEstate | 2001 – 2004 | 1.9L AWX | 130 hp (96 kW) | Diesel | Front-Wheel Drive |
| A4 B6 1.9 TDISaloon | 2001 – 2004 | 1.9L AVB | 101 hp (74 kW) | Diesel | Front-Wheel Drive |
| A4 B6 2.4Saloon | 2001 – 2004 | 2.4L BDV | 170 hp (125 kW) | Petrol | Front-Wheel Drive |
| A4 B6 Avant 2.4Estate | 2001 – 2004 | 2.4L BDV | 170 hp (125 kW) | Petrol | Front-Wheel Drive |
| A4 B6 Avant 1.8 T quattroEstate | 2001 – 2002 | 1.8L AVJ | 150 hp (110 kW) | Petrol | All-wheel Drive |
| A4 B6 Avant 3.0 quattroEstate | 2001 – 2004 | 3.0L ASN | 220 hp (162 kW) | Petrol | All-wheel Drive |
| A4 B6 Avant 3.0 quattroEstate | 2001 – 2004 | 3.0L AVK | 220 hp (162 kW) | Petrol | All-wheel Drive |
| A4 B6 2.0 FSISaloon | 2002 – 2004 | 2.0L AWA | 150 hp (110 kW) | Petrol | Front-Wheel Drive |
| A4 B6 Avant 1.9 TDIEstate | 2001 – 2004 | 1.9L AVB | 101 hp (74 kW) | Diesel | Front-Wheel Drive |
| A4 B6 1.9 TDI quattroSaloon | 2001 – 2004 | 1.9L AVF | 130 hp (96 kW) | Diesel | All-wheel Drive |
| A4 B6 1.8 TSaloon | 2002 – 2004 | 1.8L BFB | 163 hp (120 kW) | Petrol | Front-Wheel Drive |
| A4 B6 1.8 T quattroSaloon | 2002 – 2004 | 1.8L BFB | 163 hp (120 kW) | Petrol | All-wheel Drive |
| A4 B6 2.5 TDISaloon | 2002 – 2004 | 2.5L BDG | 163 hp (120 kW) | Diesel | Front-Wheel Drive |
| A4 B6 2.5 TDISaloon | 2002 – 2004 | 2.5L BFC | 163 hp (120 kW) | Diesel | Front-Wheel Drive |
| A4 B6 2.5 TDISaloon | 2002 – 2004 | 2.5L BCZ | 163 hp (120 kW) | Diesel | Front-Wheel Drive |
| A4 B6 Avant 2.5 TDIEstate | 2002 – 2004 | 2.5L BDG | 163 hp (120 kW) | Diesel | Front-Wheel Drive |
| A4 B6 Avant 2.5 TDIEstate | 2002 – 2004 | 2.5L BFC | 163 hp (120 kW) | Diesel | Front-Wheel Drive |
| A4 B6 Avant 2.5 TDIEstate | 2002 – 2004 | 2.5L BCZ | 163 hp (120 kW) | Diesel | Front-Wheel Drive |
| A4 B6 2.4Saloon | 2001 – 2004 | 2.4L AMM | 163 hp (120 kW) | Petrol | Front-Wheel Drive |
| A4 B6 Avant 2.4Estate | 2001 – 2004 | 2.4L AMM | 163 hp (120 kW) | Petrol | Front-Wheel Drive |
| A4 B6 S4 quattroSaloon | 2003 – 2004 | 4.2L BBK | 344 hp (253 kW) | Petrol | All-wheel Drive |
| A4 B6 S4 quattroSaloon | 2003 – 2004 | 4.2L BHF | 344 hp (253 kW) | Petrol | All-wheel Drive |
| A4 B6 1.8 TSaloon | 2002 – 2004 | 1.8L BEX | 190 hp (140 kW) | Petrol | Front-Wheel Drive |
| A4 B6 1.8 T quattroSaloon | 2002 – 2004 | 1.8L BEX | 190 hp (140 kW) | Petrol | All-wheel Drive |
| A4 B6 1.9 TDISaloon | 2004 – 2004 | 1.9L BKE | 116 hp (85 kW) | Diesel | Front-Wheel Drive |
| A4 B6 1.8 TSaloon | 2001 – 2004 | 1.8L AMB | 170 hp (125 kW) | Petrol | Front-Wheel Drive |
| A4 B6 1.8 T quattroSaloon | 2001 – 2004 | 1.8L AMB | 170 hp (125 kW) | Petrol | All-wheel Drive |
| A4 B6 1.8 T quattroSaloon | 2001 – 2004 | 1.8L AWM | 170 hp (125 kW) | Petrol | All-wheel Drive |
| A4 B6 3.0Saloon | 2001 – 2004 | 3.0L BBJ | 218 hp (160 kW) | Petrol | Front-Wheel Drive |
| A4 B6 3.0 quattroSaloon | 2001 – 2004 | 3.0L BBJ | 218 hp (160 kW) | Petrol | All-wheel Drive |
| A4 B6 Avant 3.0Estate | 2001 – 2004 | 3.0L BBJ | 218 hp (160 kW) | Petrol | Front-Wheel Drive |
| A4 B7 2.0 TFSISaloon | 2004 – 2008 | 2.0L BGB | 200 hp (147 kW) | Petrol | Front-Wheel Drive |
| A4 B7 2.0 TFSISaloon | 2004 – 2008 | 2.0L BWE | 200 hp (147 kW) | Petrol | Front-Wheel Drive |
| A4 B7 2.0 TFSISaloon | 2004 – 2008 | 2.0L BWT | 200 hp (147 kW) | Petrol | Front-Wheel Drive |
| A4 B7 2.0 TFSISaloon | 2004 – 2008 | 2.0L BPG | 200 hp (147 kW) | Petrol | Front-Wheel Drive |
| A4 B7 2.0 TFSI quattroSaloon | 2004 – 2008 | 2.0L BGB | 200 hp (147 kW) | Petrol | All-wheel Drive |
| A4 B7 2.0 TFSI quattroSaloon | 2004 – 2008 | 2.0L BWE | 200 hp (147 kW) | Petrol | All-wheel Drive |
| A4 B7 2.0 TFSI quattroSaloon | 2004 – 2008 | 2.0L BWT | 200 hp (147 kW) | Petrol | All-wheel Drive |
| A4 B7 2.0 TFSI quattroSaloon | 2004 – 2008 | 2.0L BPG | 200 hp (147 kW) | Petrol | All-wheel Drive |
| A4 B7 3.2 FSISaloon | 2005 – 2008 | 3.1L AUK | 255 hp (188 kW) | Petrol | Front-Wheel Drive |
| A4 B7 3.2 FSI quattroSaloon | 2005 – 2008 | 3.1L AUK | 255 hp (188 kW) | Petrol | All-wheel Drive |
| A4 B7 3.2 FSI quattroSaloon | 2005 – 2008 | 3.1L BKH | 255 hp (188 kW) | Petrol | All-wheel Drive |
| A4 B7 2.0 TDISaloon | 2004 – 2008 | 2.0L BNA | 136 hp (100 kW) | Diesel | Front-Wheel Drive |
| A4 B7 2.0 TDISaloon | 2004 – 2008 | 2.0L BRF | 136 hp (100 kW) | Diesel | Front-Wheel Drive |
| A4 B7 2.0 TDI 16VSaloon | 2004 – 2008 | 2.0L BLB | 140 hp (103 kW) | Diesel | Front-Wheel Drive |
| A4 B7 2.0 TDI 16VSaloon | 2004 – 2008 | 2.0L BRE | 140 hp (103 kW) | Diesel | Front-Wheel Drive |
| A4 B7 3.0 TDI quattroSaloon | 2004 – 2008 | 3.0L BKN | 204 hp (150 kW) | Diesel | All-wheel Drive |
| A4 B7 1.8 TSaloon | 2004 – 2008 | 1.8L BFB | 163 hp (120 kW) | Petrol | Front-Wheel Drive |
| A4 B7 1.8 T quattroSaloon | 2004 – 2008 | 1.8L | 163 hp (120 kW) | Petrol | All-wheel Drive |
| A4 B7 2.0Saloon | 2004 – 2008 | 2.0L | 130 hp (96 kW) | Petrol | Front-Wheel Drive |
| A4 B7 1.6Saloon | 2004 – 2008 | 1.6L ALZ | 102 hp (75 kW) | Petrol | Front-Wheel Drive |
| A4 B7 1.9 TDISaloon | 2004 – 2008 | 1.9L BKE | 116 hp (85 kW) | Diesel | Front-Wheel Drive |
| A4 B7 1.9 TDISaloon | 2004 – 2008 | 1.9L BRB | 116 hp (85 kW) | Diesel | Front-Wheel Drive |
| A4 B7 2.5 TDISaloon | 2004 – 2006 | 2.5L BDG | 163 hp (120 kW) | Diesel | Front-Wheel Drive |
| A4 B7 Avant 1.6Estate | 2004 – 2008 | 1.6L ALZ | 102 hp (75 kW) | Petrol | Front-Wheel Drive |