What are the most important features to consider when buying an Audi A6?

I am planning on buying an Audi A6 and want to make sure I get the best deal. Can anyone offer some advice on what features I should prioritize and what to look out for when shopping for this particular model?

When buying an Audi A6, you should definitely consider the engine size and fuel economy. A bigger engine with higher horsepower may be enticing, but it could also come at a higher cost. Additionally, pay attention to the car's safety features and any included technology such as a touchscreen interface or advanced driver assistance systems.