Is it a mandatory feature today by the regulators ?
do they have AVAS in all models of i-Pace?Here's what I found on the web:
Electric vehicle warning sounds - Wikipedia
Jaguar Owner Information
If that second link doesn't take you to the correct page, you want English, I-PACE (doesn't matter which model year) and search for AVAS. All it says is:
The Acoustic Vehicle Alert System (AVAS) automatically emits an external synthesized sound to enable pedestrians to be audibly aware of the vehicle’s presence. AVAS only operates when the vehicle is driven at speeds of less than 20 km/h (12 mph).