| A6 C5 (4B2, 4B4) 1.8 T | Benzin | 110kW / 150PS | Frontantrieb | 1781ccm | Suchen |
| A6 C5 (4B2, 4B4) 1.8 T quattro | Benzin | 110kW / 150PS | Allrad | 1781ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 | Benzin | 121kW / 165PS | Frontantrieb | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 quattro | Benzin | 121kW / 165PS | Allrad | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 1.9 TDI | Diesel | 81kW / 110PS | Frontantrieb | 1896ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.5 TDI | Diesel | 110kW / 150PS | Frontantrieb | 2496ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.8 | Benzin | 142kW / 193PS | Frontantrieb | 2771ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.8 quattro | Benzin | 142kW / 193PS | Allrad | 2771ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.5 TDI quattro | Diesel | 110kW / 150PS | Allrad | 2496ccm | Suchen |
| A6 C5 (4B2, 4B4) 1.8 | Benzin | 92kW / 125PS | Frontantrieb | 1781ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.7 T | Benzin | 169kW / 230PS | Frontantrieb | 2671ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.7 T quattro | Benzin | 169kW / 230PS | Allrad | 2671ccm | Suchen |
| A6 C5 (4B2, 4B4) 1.8 T quattro | Benzin | 132kW / 180PS | Allrad | 1781ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 | Benzin | 100kW / 136PS | Frontantrieb | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 3.7 | Benzin | 191kW / 260PS | Frontantrieb | 3697ccm | Suchen |
| A6 C5 (4B2, 4B4) 4.2 quattro | Benzin | 220kW / 299PS | Allrad | 4172ccm | Suchen |
| A6 C5 (4B2, 4B4) 3.7 quattro | Benzin | 191kW / 260PS | Allrad | 3697ccm | Suchen |
| A6 C5 (4B2, 4B4) 1.8 T | Benzin | 132kW / 180PS | Frontantrieb | 1781ccm | Suchen |
| A6 C5 (4B2, 4B4) S6 quattro | Benzin | 250kW / 340PS | Allrad | 4172ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.5 TDI | Diesel | 132kW / 180PS | Frontantrieb | 2496ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.5 TDI quattro | Diesel | 132kW / 180PS | Allrad | 2496ccm | Suchen |
| A6 C5 (4B2, 4B4) 1.9 TDI | Diesel | 85kW / 115PS | Frontantrieb | 1896ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.8 | Benzin | 132kW / 180PS | Frontantrieb | 2771ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.8 | Benzin | 140kW / 190PS | Frontantrieb | 2771ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 | Benzin | 115kW / 156PS | Frontantrieb | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.0 | Benzin | 96kW / 130PS | Frontantrieb | 1984ccm | Suchen |
| A6 C5 (4B2, 4B4) 3.0 | Benzin | 162kW / 220PS | Frontantrieb | 2976ccm | Suchen |
| A6 C5 (4B2, 4B4) 3.0 quattro | Benzin | 162kW / 220PS | Allrad | 2976ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 | Benzin | 125kW / 170PS | Frontantrieb | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 quattro | Benzin | 125kW / 170PS | Allrad | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.5 TDI | Diesel | 114kW / 155PS | Frontantrieb | 2496ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.7 T quattro | Benzin | 184kW / 250PS | Allrad | 2671ccm | Suchen |
| A6 C5 (4B2, 4B4) 1.9 TDI | Diesel | 96kW / 130PS | Frontantrieb | 1896ccm | Suchen |
| A6 C5 (4B2, 4B4) RS6 quattro | Benzin | 331kW / 450PS | Allrad | 4172ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 | Benzin | 120kW / 163PS | Frontantrieb | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 quattro | Benzin | 120kW / 163PS | Allrad | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.5 TDI | Diesel | 120kW / 163PS | Frontantrieb | 2496ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.4 quattro | Benzin | 115kW / 156PS | Allrad | 2393ccm | Suchen |
| A6 C5 (4B2, 4B4) 3.0 quattro | Benzin | 160kW / 218PS | Allrad | 2976ccm | Suchen |
| A6 C5 (4B2, 4B4) 2.8 quattro | Benzin | 140kW / 190PS | Allrad | 2771ccm | Suchen |
| A6 C5 (4B2, 4B4) 3.0 | Benzin | 160kW / 218PS | Frontantrieb | 2976ccm | Suchen |