Gasoline:
* 2.0 TFSI (Turbocharged): This was a 4-cylinder engine with 170 hp, 180 hp, or 211 hp depending on the specific model.
* 3.2 FSI (Direct Injection): This was a 6-cylinder engine with 265 hp.
* 2.0 TFSI (Turbocharged): This was a high-performance version with 211 hp, offered in the S4 model.
Diesel:
* 2.0 TDI: This was a 4-cylinder diesel engine with 140 hp or 170 hp.
Note: This list is not exhaustive and there may have been variations based on the market and specific trim level. To know the exact engine size for your specific 2009 Audi A4, check the car's documentation or the vehicle identification number (VIN).