Author : Jagdev Kalsi
Published : 30 October 2026
Tata Harrier petrol mileage, real-world fuel efficiency, automatic transmission behaviour and overall performance tested in city and highway driving conditions. In this video, V3Cars reviews the 2026 Tata Harrier Petrol Automatic and tests its 1.5-litre turbo petrol engine using the tank-to-tank method.
The Tata Harrier petrol is powered by a 1.5-litre, 4-cylinder turbo petrol engine that produces 170PS of maximum power and 280Nm of peak torque. In the version tested here, the engine is paired with a 6-speed torque converter automatic transmission.
In our real-world fuel efficiency test, the Harrier Petrol Automatic delivered 8.74kmpl in city driving conditions and 14.50kmpl on the highway. With a 50:50 mix of city and highway driving, its calculated fuel efficiency stands at 10.91kmpl.
In this video, we also review the Harrier petrol’s engine refinement, low-end torque, city drivability, highway performance, transmission response, ride and braking, cabin experience, seats, digital IRVM and overall everyday usability.
The 1.5-litre turbo petrol engine itself feels surprisingly well suited to the Harrier despite its relatively small displacement. It offers adequate performance, strong mid-range response and good refinement. However, the 6-speed automatic transmission is not always intuitive with its upshifts, particularly at lower highway speeds, and this becomes one of the biggest weaknesses of the petrol powertrain.
We also compare the Harrier petrol automatic’s real-world efficiency with other cars tested by V3Cars. Its 10.91kmpl mixed efficiency is slightly better than the Tata Sierra turbo petrol automatic and the MG Hector CVT, despite the Harrier offering higher output than the Sierra.
The Tata Harrier petrol range starts at Rs 13 lakh, while the petrol automatic starts with the Pure X variant at around Rs 17.90 lakh. The Red Dark automatic version tested in this video is priced at around Rs 24.95 lakh (ex-showroom).

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