Why does the Audi A2 not have a traditional spare tire?

I've noticed that my Audi A2 does not come with a spare tire like most cars. What is the reasoning behind this decision by Audi?

Audi made the decision to remove the spare tire in order to reduce weight and increase fuel efficiency on the A2. This allows for a more streamlined and efficient driving experience.

In the event of a flat tire, Audi provides a tire repair kit which includes sealant and a compressor. This eliminates the need for a spare tire and takes up less space in the car.