El Audi A6 Avant (2005-2008) se ofreció con 22 configuraciones de motor distintas en toda su gama.
| Motor | Potencia | Par motor | Transmisión | Ruedas motrices | Velocidad máxima | 0-100 km/h | Consumo | Disponible en |
|---|---|---|---|---|---|---|---|---|
| 4.2L Gasolina | 335 hp | 420 Nm | Automatic | All Wheel Drive | 250 km/h | 6.1 s | 10.9 l/100km | 2 acabados |
| 3.1L Gasolina | 255 hp | 330 Nm | Automatic | All Wheel Drive | 250 km/h | 7.4 s | 10.9 l/100km | 2 acabados |
| 3.1L Gasolina | 255 hp | 330 Nm | Manual | All Wheel Drive | 250 km/h | 7.0 s | 10.8 l/100km | 2 acabados |
| 3.1L Gasolina | 255 hp | 330 Nm | Automatic | Front Wheel Drive | 250 km/h | 7.2 s | 9.6 l/100km | 2 acabados |
| 3.1L Gasolina | 255 hp | 330 Nm | Manual | Front Wheel Drive | 250 km/h | 7.1 s | 9.9 l/100km | 2 acabados |
| 3.0L Diésel | 233 hp | 450 Nm | Automatic | All Wheel Drive | 242 km/h | 7.4 s | 8.6 l/100km | 2 acabados |
| 3.0L Diésel | 233 hp | 450 Nm | Manual | All Wheel Drive | 242 km/h | 7.1 s | 8.1 l/100km | 2 acabados |
| 3.0L Diésel | 225 hp | 450 Nm | Automatic | All Wheel Drive | 240 km/h | 7.6 s | 8.4 l/100km | 2 acabados |
| 3.0L Diésel | 225 hp | 450 Nm | Manual | All Wheel Drive | 240 km/h | 7.3 s | 8.0 l/100km | 2 acabados |
| 2.8L Gasolina | 210 hp | 280 Nm | Automatic | All Wheel Drive | 232 km/h | 8.6 s | 9.7 l/100km | 2 acabados |
| 2.8L Gasolina | 210 hp | 280 Nm | Automatic | Front Wheel Drive | 233 km/h | 8.2 s | 8.8 l/100km | 2 acabados |
| 2.8L Gasolina | 210 hp | 280 Nm | Manual | Front Wheel Drive | 237 km/h | 8.2 s | 8.8 l/100km | 2 acabados |
| 2.7L Diésel | 180 hp | 380 Nm | Automatic | All Wheel Drive | 223 km/h | 9.1 s | 8.5 l/100km | 2 acabados |
| 2.7L Diésel | 180 hp | 380 Nm | Automatic | Front Wheel Drive | 220 km/h | 8.5 s | 7.5 l/100km | 2 acabados |
| 2.7L Diésel | 180 hp | 380 Nm | Manual | Front Wheel Drive | 225 km/h | 8.3 s | 7.2 l/100km | 2 acabados |
| 2.4L Gasolina | 177 hp | 230 Nm | Manual | All Wheel Drive | 223 km/h | 9.4 s | 11.0 l/100km | 2 acabados |
| 2.4L Gasolina | 177 hp | 230 Nm | Automatic | Front Wheel Drive | 221 km/h | 9.5 s | 9.6 l/100km | 2 acabados |
| 2.4L Gasolina | 177 hp | 230 Nm | Manual | Front Wheel Drive | 226 km/h | 9.2 s | 9.9 l/100km | 2 acabados |
| 2.0L Gasolina | 170 hp | 280 Nm | Automatic | Front Wheel Drive | 216 km/h | 9.0 s | 8.2 l/100km | 2 acabados |
| 2.0L Gasolina | 170 hp | 280 Nm | Manual | Front Wheel Drive | 223 km/h | 8.7 s | 8.1 l/100km | 2 acabados |
| 2.0L Diésel | 140 hp | 320 Nm | Automatic | Front Wheel Drive | 201 km/h | 10.4 s | 6.7 l/100km | 2 acabados |
| 2.0L Diésel | 140 hp | 320 Nm | Manual | Front Wheel Drive | 205 km/h | 10.5 s | 6.4 l/100km | 2 acabados |
Cada fila es una configuración mecánica distinta — cilindrada, potencia, transmisión, tracción y tipo de combustible — deduplicada entre acabados que comparten el mismo motor. Las diferencias solo de acabado (interior, llantas, opciones) no crean una fila aparte.