- The Tata Sierra's new 1.5-litre turbo-petrol and 6-speed automatic accelerated from 0-100 km/h in 9.96 seconds in controlled testing.
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check offers We recently got behind the driving seat of Tata's latest SUV, the Sierra. During our drive, we tested the SUV on multiple parameters including 0 to 100 acceleration. The test was professionally conducted by HT Auto on a closed, private road. As always, this test was conducted under controlled conditions by trained drivers. Readers are strictly advised not to attempt any speed or acceleration test on public roads.
What were the testing conditions?
The tested Sierra was equipped with Tata's newly introduced 6-speed automatic gearbox and was set to Sport mode, which ensured that the powertrain was operating in the most responsive manner. The SUV was powered by the new 1.5-litre Hyperion turbo-petrol engine, rated at 158 hp and 255 Nm of torque.
Also Read: Tata Sierra First Drive Review: An adventurous yet friendly beast
To achieve the cleanest possible launch, the brakes were held while revs built up before releasing, a standard procedure in controlled acceleration testing. This allowed the turbo to rev up a little earlier. The vehicle was carrying two adults, one at the wheel and one pillion, each weighing around 60–70 kg. The fuel tank was filled to full capacity, increasing the total test load.
Also See: Tata Sierra First Drive Review: Big, fun and futuristic
What were the results?
Under these conditions, the Sierra accelerates from 0 to 100 km/h in 9.96 seconds, according to the stopwatch time. For a midsize SUV with a full tank, two passengers, and an automatic transmission, the result puts the Sierra among the faster offerings in its segment. Especially considering that this is a new powertrain-gearbox combination that is undergoing preliminary evaluation, it's not just a number. The 1.5 turbo petrol Hyperion engine is what makes the SUV frolic like a kid inside a ball pit.
Also Read: Tata Punch facelift 2026 spotted testing in Kerala, major cabin upgrades revealed
Why does this test matter?
Acceleration statistics are not just about straight motion; They provide insight into how a vehicle will react during highway mergers, overtakes and climbs. With the Hyperion turbo-petrol engine and the new 6-AT that shows promising response, the Sierra is set to deliver a more engaging driving experience than previous Tata petrol SUVs.
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First publication date: 13 Dec 2025, 08:36 am IST