What are the most significant differences between the 2020 and 2021 Audi A5 models?

I'm considering purchasing a 2020 or 2021 Audi A5, but I'm not sure which one would be the better choice. Can anyone explain the main differences between these models, both in terms of performance and features?

The biggest difference between the 2020 and 2021 Audi A5 models is the addition of the available Black Optic Package for 2021, which includes black exterior accents and 19-inch wheels. In terms of performance, the 2021 model also has a slightly more powerful engine, with a 13 horsepower increase compared to the 2020 model.