What is the difference between a semi-autonomous and fully autonomous driving system in the Audi A4?

I am interested in purchasing an Audi A4 and was wondering what the difference is between a semi-autonomous and fully autonomous driving system. Can you explain the technical details and if one is better than the other?

A semi-autonomous driving system in the Audi A4 allows for limited hands-free operation, while still requiring the driver to be attentive and ready to take control at any time. Conversely, a fully autonomous driving system allows for complete hands-free operation and does not require the driver to be constantly attentive. Both systems have their advantages and disadvantages and it ultimately depends on the individual's driving preferences and needs.

In terms of technical differences, a semi-autonomous driving system in the Audi A4 typically uses sensors and cameras to assist with lane keeping, adaptive cruise control, and parking assistance. A fully autonomous driving system may also utilize lidar and radar systems to enhance its capabilities. It's important to note that both systems still require a human driver and are not yet fully self-driving.

When considering which system is better, it really depends on what your driving needs are. A fully autonomous system may provide more convenience and reduce driver fatigue, but it may also come with a higher price tag. On the other hand, a semi-autonomous system may still require the driver to be attentive and engaged, but it may be more affordable and easier to maintain.