El Audi A3 (2005-2008) se ofreció con 21 configuraciones de motor distintas en toda su gama.
| Motor | Potencia | Par motor | Transmisión | Ruedas motrices | Velocidad máxima | 0-100 km/h | Consumo | Disponible en |
|---|---|---|---|---|---|---|---|---|
| 3.2L Gasolina | 250 hp | 320 Nm | Automatic | All Wheel Drive | 250 km/h | 6.2 s | 9.5 l/100km | 2 acabados |
| 3.2L Gasolina | 250 hp | 320 Nm | Manual | All Wheel Drive | 250 km/h | 6.3 s | 10.5 l/100km | 2 acabados |
| 2.0L Gasolina | 200 hp | 280 Nm | Manual | All Wheel Drive | 234 km/h | 7.0 s | 8.8 l/100km | 2 acabados |
| 2.0L Gasolina | 200 hp | 280 Nm | Manual | Front Wheel Drive | 236 km/h | 7.1 s | 7.8 l/100km | 6 acabados |
| 2.0L Gasolina | 200 hp | 280 Nm | Automatic | Front Wheel Drive | 236 km/h | 6.9 s | 7.7 l/100km | 2 acabados |
| 2.0L Diésel | 170 hp | 350 Nm | Manual | All Wheel Drive | 220 km/h | 7.8 s | 6.4 l/100km | 6 acabados |
| 2.0L Diésel | 170 hp | 350 Nm | Automatic | Front Wheel Drive | 222 km/h | 7.8 s | 5.9 l/100km | 6 acabados |
| 2.0L Diésel | 170 hp | 350 Nm | Manual | Front Wheel Drive | 222 km/h | 8.2 s | 5.7 l/100km | 6 acabados |
| 1.8L Gasolina | 160 hp | 250 Nm | Automatic | Front Wheel Drive | 220 km/h | 7.8 s | 7.5 l/100km | 6 acabados |
| 1.8L Gasolina | 160 hp | 250 Nm | Manual | Front Wheel Drive | 220 km/h | 8.0 s | 7.2 l/100km | 6 acabados |
| 2.0L Gasolina | 150 hp | 200 Nm | Automatic | Front Wheel Drive | 209 km/h | 9.5 s | 8.0 l/100km | 6 acabados |
| 2.0L Gasolina | 150 hp | 200 Nm | Manual | Front Wheel Drive | 214 km/h | 8.9 s | 7.2 l/100km | 6 acabados |
| 2.0L Diésel | 140 hp | 320 Nm | Manual | All Wheel Drive | 205 km/h | 9.4 s | 5.9 l/100km | 6 acabados |
| 2.0L Diésel | 140 hp | 320 Nm | Automatic | Front Wheel Drive | 207 km/h | 9.0 s | 5.6 l/100km | 6 acabados |
| 2.0L Diésel | 140 hp | 320 Nm | Manual | Front Wheel Drive | 207 km/h | 9.5 s | 5.5 l/100km | 6 acabados |
| 1.4L Gasolina | 125 hp | 200 Nm | Manual | Front Wheel Drive | 203 km/h | 9.6 s | 6.5 l/100km | 6 acabados |
| 1.6L Gasolina | 115 hp | 155 Nm | Manual | Front Wheel Drive | 196 km/h | 10.9 s | 6.6 l/100km | 6 acabados |
| 1.9L Diésel | 105 hp | 250 Nm | Manual | Front Wheel Drive | 194 km/h | 11.4 s | 4.5 l/100km | 7 acabados |
| 1.9L Diésel | 105 hp | 250 Nm | Automatic | Front Wheel Drive | 187 km/h | 11.1 s | 5.6 l/100km | 6 acabados |
| 1.6L Gasolina | 102 hp | 148 Nm | Automatic | Front Wheel Drive | 183 km/h | 12.9 s | 7.7 l/100km | 6 acabados |
| 1.6L Gasolina | 102 hp | 148 Nm | Manual | Front Wheel Drive | 185 km/h | 11.9 s | 7.1 l/100km | 6 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.