Considering you want a powerful engine for mostly highway use, we suggest choosing between the Kia Sonet HTK O Turbo petrol iMT or the Mahindra 3XO REV X M O petrol manual. Both offer strong turbo petrol engines and fit your budget, but each has its strengths and weaknesses.
The Kia Sonet gives you a more premium cabin, a larger boot and an enjoyable driving experience. The only downside is the rear seat, which feels cramped for tall adults.
The Mahindra 3XO offers a bigger car feel at this price with a wide body, generous kneeroom and one of the most comfortable rear benches in the segment. The downside is its small boot, which is among the smallest in the class. If that is not a concern, this is the one to pick.

