Given your high daily driving and need for good range, the Mahindra XEV 9S is the best choice. It features a large 79kWh battery pack that offers a range of over 440km and it has strong performance for those who enjoy driving. The Pack One Above variant starts at around Rs 22 lakh and is extremely well-equipped. Moreover, the XEV’s 409V electrical architecture supports DC fast-charging speeds of up to 175kW making quick top ups quick, if you have a fast-charger in the vicinity. 

The other choice would be the Tata Harrier EV that gets a 75kWh battery and is more expensive than the 9S from the entry variant. It also doesn't get the same plush cabin as the Mahindra and overall lacks in terms of value for money.  

Considering that you may occasionally need more than five seats and plan to keep the car for at least four to five years, we would recommend opting for a six or seven-seater. Because of this, the Hyundai Creta EV and the Tata Harrier EV can be ruled out, as both are strictly five-seaters.

The Mahindra XEV 9S is very competitively priced and comes loaded with features. The downside is the ride quality, especially in the second and third rows. It can feel a bit too soft due to the suspension setup. This is not much of an issue in city driving, but at highway speeds on uneven surfaces, the car tends to bounce as the suspension takes time to settle.

Since you had also shortlisted the Hyundai Creta EV, we would suggest taking a look at the Kia Carens Clavis EV, as it uses the same powertrain and battery. It works better as a six or seven-seater, thanks to a more spacious third row compared to the 9S, where even adults can travel in reasonable comfort. While it is not as powerful as the Mahindra XEV 9S. It still offers more than enough performance even with a full load, and the suspension feels more comfortable overall.

One important thing to note is the battery size. The Clavis EV has a smaller battery pack compared to the XEV 9S. In real-world usage, the Mahindra can deliver over 450 km on a full charge. While the Clavis EV is likely to offer closer to 350 km of realistic range.

Since you are looking for an EV for city use, the Hyundai Creta Electric is a good choice. While it isn't as powerful as the Mahindra BE 6 or Tata Harrier EV, performance is brisk and more than adequate for city conditions. 

The same holds true for its battery as well, which is the smallest (LR versions get a 51.4kWh battery pack) but delivers a comfortable 400km of real-world range in city driving. 

What makes the Creta Electric likeable and ideal for city use is its size. A Harrier EV is a full-size vehicle, while the BE6 is significantly wider. It means both can feel a bit cumbersome in congested confines. What also goes in favour of the Creta is that the tech onboard works as it's supposed to - free of glitches and errors. 

For city use, the Toyota Fortuner is not ideal. Since you have private parking that accommodates a charger, this is a perfect time to switch to an EV. The Mahindra XEV 9E is more appealing than the Harrier EV, but the Mahindra XEV 9S is the one to focus on because it is more practical and also costs less. 

It offers enough range for your 100 km weekend runs, has sufficient power and torque to tackle steep inclines, and has adequate ground clearance for rough roads. The Fortuner will handle rough roads better, but given that it is much more than the 9S. It is hard to justify the extra spend for occasional rough-road use.
 

As you rightly said, the Toyota Innova HyCross is better from the rear seat, while the Tata Harrier EV is more enjoyable from the front. It's up to you to decide where your priority lies. 

When it comes to performance and dynamics, the Harrier EV ticks more boxes, as it has a much stronger and more responsive powertrain, sharper steering, tighter dynamics and a pretty comfortable ride in isolation too. 

However, its shortcoming is that of all EVs - the limitation of range and dependency on charging. Plus, the Harrier EV has shown signs of electronic glitches, at least on early cars. 

If these are things you can work with, the Harrier EV seems like the better choice for you. The Innova, meanwhile, is the better all-rounder. It's more spacious and comfortable, with rock-solid reliability and a seamless service experience.