If refinement is your priority, the Hyundai Creta Electric is the safer bet for you over the Tata Sierra EV. Since you've already noticed the Sierra's motor noise creeping into the cabin, that could become an everyday annoyance, particularly on highways. A test drive is worth more than a long list of features in this case. The Sierra EV has the advantage of a newer design and a spacious cabin, but your concerns about glitches are understandable. Early software issues don't necessarily mean the car is unreliable, though it's sensible to be cautious until there's a longer ownership record. The Creta Electric feels like the more familiar, predictable choice, with Hyundai's established service network working in its favour.
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