The Thar Roxx, while bearing the Thar name, introduces several new design elements. It sports a longer wheelbase (400 mm longer than the three-door version) and a wider, taller stance. The SUV's design, though inspired by the three-door Thar, stands out with new projector-type LED headlamps, distinct C-shaped DRLs, and a reimagined six-vertical slat grille enclosed in a pentagon shape. The overall styling, while rugged, is modern and functional, with design touches that set it apart from its smaller sibling. The slanting C-pillar has drawn some criticism for looking less cohesive, but it was necessary to create more space at the rear. The 19-inch wheels and bold bumpers further emphasize its tough, off-road-ready stance.

Under the hood, the Thar Roxx offers both petrol and diesel engine options. The petrol variant features a 2.0-liter turbocharged engine, available in three levels of tune: 150 bhp, 160 bhp, and 175 bhp, with up to 380 Nm of torque. The diesel engine is a 2.2-liter turbo unit from the mHawk family, producing between 150-174 bhp, depending on the variant, and offering up to 380 Nm of torque. The Thar Roxx delivers strong performance, particularly in its diesel guise, which is torquey and responsive, making it ideal for both on-road cruising and off-road adventures. Mahindra claims the diesel variant can accelerate from 0-60 km/h in under 5 seconds, while the petrol versions offer smooth power delivery, making the Thar Roxx versatile across various driving conditions

The Thar Roxx has made significant improvements in ride and handling over its three-door predecessor. The longer wheelbase and updated suspension system, which includes independent double-wishbone front suspension and a rear rigid axle, contribute to a more stable and comfortable ride. On highways, the SUV feels planted, with minimal body roll, even during quick lane changes. Off-road, the Thar Roxx excels, with features like a 4x4 system, high ground clearance (226 mm), and a water-wading capacity of 650 mm. Additional off-road aids like CrawlSmart and IntelliTurn Assist make handling tough terrain easier, enhancing its capability as an adventure vehicle.

The interior of the Thar Roxx reflects its enhanced focus on comfort. The five-seater layout offers more space than the three-door Thar, with improved legroom and headroom for rear passengers. The flat floor and reclining rear seats make long journeys more comfortable, and the ventilated front seats with electric adjustments add to the premium feel. The predominantly white interior, while stylish, might require more maintenance. The dashboard is equipped with dual 10.25-inch screens: one for infotainment and the other for the instrument cluster. These provide essential information and connectivity features, while the Adventure Stats tab offers off-road-specific data. The cabin, overall, is designed to be functional yet comfortable, with a focus on both on-road and off-road usability.