Known with the project code Q501[5] during the development phase, this mid-size SUV was previewed as the Tata H5X concept car.

[7] The car is a C-segment SUV based on the OmegaArc platform, an essentially re-engineered version of the Jaguar Land Rover D8 platform adopted by models such as Range Rover Evoque, Discovery Sport and Jaguar E-Pace.

The OmegaArc compared to the original D8 has been redesigned to lower production costs by adopting different alloys and rear suspension with twist-beam scheme and panhard rod with coil spring, cheaper than the multilink of the Jaguar Land Rover models, while the front axle maintains the same MacPherson strut with coil spring and anti roll bar.

Multijet 16-valve four-cylinder turbo diesel with common rail direct injection, variable-geometry turbocharger, delivering 140 horsepower (104 kW; 142 PS) and 350 N⋅m (258 lb⋅ft; 36 kg⋅m) of torque, produced by Fiat (FCA India[9]) in Pune.

[11] Internally, the Harrier introduces a new 8.8-inch touchscreen infotainment system equipped with Android Auto, the instrument cluster has a 7-inch TFT display.

[13][14] In February 2020, the Harrier received feature updates including a panoramic sunroof, increased power output and an automatic transmission sourced from Hyundai.

Feature update include roof rails, side steps and front parking sensors.

Also the Harrier for India was rated 5 Star Along with Safari in Bharat NCAP in 2023[22] (similar to Global NCAP 2023, based on Latin NCAP 2016): At the 89th Geneva International Motor Show in 2019, All new Safari was showcased,along with the new Altroz subcompact hatchback,[23] H2X subcompact SUV concept car, and Buzzard Sport which is a rebadged Harrier for exhibition purpose as the Harrier name is globally trademarked by Toyota.