For the availability, we would suggest you walk into the nearest dealership as they will be the better people to assist you because it depends on their stock book. You can click on the following link to see the details of the nearest dealership and selecting your city accordingly - Car Showrooms.
As of now, there are no 7 seater electric cars available in India. Moreover, click on the given link and apply filters in order to check out new cars as per your requirements. Also, check you the Upcoming Electric Cars in India.
All three cars are good in their own forte. The Hyundai Kona Electric is a car and a landmark moment that paves the way for every electric car that follows. Kona is a feature loaded car and offers a Super smooth drive experience. On the other hand, the Nexon EV is a package that makes a lot of sense. To top it off, the Nexon EV is just as family-friendly as the petrol/diesel Nexon and presents itself as a very good all-rounder when it comes to daily usability. The main limitation it has is highway usage: It’s very easy to drive at high speeds but will lose range quite quickly. Whereas The MG ZS EV isn’t just an eco-friendly car it’s also quite family-friendly. In addition to being easy to drive in a variety of conditions, it also offers some excitement with its punchy performance. For a better understanding of compatibility and driving comfort, we would suggest you to take a test drive. Follow the link and select your desired city for dealership.Read more -Tata Nexon EV Battery Draining First Drive Review.