What are the most important engine specifications to consider when purchasing an Audi A4?

I am looking to buy an Audi A4 but am unsure what engine specifications I should prioritize. Can you provide some guidance on what specifications are most important to consider?

As a long-time Audi owner, I would recommend focusing on the engine size, horsepower, and torque. These are the key factors that can greatly affect the performance of your A4.

In my experience, the fuel economy and emissions ratings are also important factors to consider. Don't overlook these specs in your decision-making process.

I would also recommend looking into the type of transmission, whether it's a manual or automatic. Consider your driving preferences and the type of driving you'll be doing before making a decision.