The Toyota Innova Crysta will be discontinued when the CAFE 3 emissions norms come around in 2027. But it should not be a cause for concern in terms of maintenance. As the Toyota Fortuner and Hilux - which share the same IMV platform and diesel engine - are expected to continue on. 

Thus parts availability will not be an issue and, as ever, Toyota's reputation for reliability and service precedes it. If you are still concerned, however, the Mahindra XUV 7XO is the next best option, and a much better value than the Innova Crysta, if not quite as spacious. The company has raised its production standards considerably since the days of the KUV100, so rust is unlikely to be an issue. 

As EVs are still relatively new, their performance after 15 years is still an unknown quantity. EV batteries are expected to have a shelf life of 10-12 years. During the course of which the battery's capacity to hold a charge will gradually deplete. 

After this point, it will have to be replaced, which is a high cost, although the savings on fuel over the years are expected to offset it. This, of course, reduces their resale value considerably compared to petrol or diesel cars. 

Public charging infrastructure is improving at a rapid rate, so the problem of busy chargers should be less with each passing year. But the best charging solution remains to have a charger at your home and at your destination, and to charge in small amounts as needed.

As for hybrids, the same battery concerns apply to them too - it's just that the batteries are smaller and therefore cheaper to replace. Self-charging strong hybrids aren't burdened with charging and therefore not dependent on charging infrastructure. But while they are super efficient, they still use petrol, which is expensive. Still, if you do plan to keep the car for 15 years plus, a hybrid would be a safer bet overall. 

If you are looking for a true 7/8 seater, then the Toyota Innova Crysta is a better option for you. It is more spacious than the Mahindra XUV 7XO, especially on the 3rd row, and the 2.4-litre diesel engine is refined and powerful. The Innova Crysta also comes with Toyota's reliability and low service expenses, so even if you buy a used car, you will get the same benefit. 

If you do decide to buy from the used car market, make sure you do your due diligence well and buy from authorized second hand dealers, that way you can have some peace of mind.

In case you do not need the third row for seating, or need the third row for seating for a limited time, then you can consider the 7XO, which is now tech-loaded with its triple-screen setup. The new suspension setup, it gives excellent ride quality, too. However, the 7XO's 3rd row is not very practical for actual use and leaves very little space for luggage if all 3 rows are up.

Considering you drive up to 3,000km a month, a diesel makes more sense for you. Among SUVs within your budget, the Tata Safari offers the most comfort with enough space even in the third row. MPV options include the well-rounded Kia Carens Clavis diesel, and you could even look at the Toyota Innova Crysta. Sure, the Crysta feels old, but it still delivers on seat comfort and long-distance ability.