Audi Q3 35 S-tronic TFSi Mild Hybrid.
The Auto (S-tronic) version of the 1.5 petrol is fitted with a Mild Hybrid system. The battery and convertor are housed in the boot and it means you can’t lower the floor so the boot size drops from 530 to 410 litres.
This is about the Q3 Sportback but applies to the latest Q3 too: