What Are the Differences Between the Audi A6 45 vs 55 Models?

I am struggling with understanding the key differences between the Audi A6 45 and 55 models. Can someone explain in detail?

The main difference between the Audi A6 45 and 55 models is the engine. The A6 45 has a 4-cylinder engine while the A6 55 has a 6-cylinder engine. This means the A6 55 will have more power and be faster on the road.

Another difference is in the trim levels. The A6 45 is available in Premium and Premium Plus, while the A6 55 is only available in the higher trim level, Prestige. This means the A6 55 will have more features and options.

In terms of fuel efficiency, the A6 45 has a slightly higher MPG than the A6 55. However, the A6 55 does have a mild hybrid system which can improve fuel efficiency in certain driving scenarios.