The reborn Sierra takes inspiration from the original in terms of design, but we take a closer look to find out what all is different.
The all-new Tata Sierra has been showcased in near-production form at the ongoing Auto Expo 2025, and this is the model – with minor changes to the interior – that will be seen at a Tata showroom near you sometime in the second half of 2025. While there are obvious connections to the original Sierra, we take a closer look at the design differences, the interior and the powertrain options available on the new SUV.
Tata Sierra new vs old design
Tata Sierra new vs old design
Aspects of the new Sierra that are directly inspired by the old model include the signature curved-over rear-side windows, the squarish wheel arches and the high-set bonnet. However, the rake of the roofline is much sharper on the 2025 Sierra, the front and rear overhangs are much shorter, and, overall the new model is more slab-sided and upright. The new model’s light units are also much slimmer than the original, and have hints of Tata’s newer models, including its EV line-up.
The older Sierra had styling cues inspired by Mercedes models of the time, with the squarish, vertical nose and protruding bumpers. Another big change is the alloy wheels and the tyres – while the older model had thick, high profile 215/75 R15 tyres, the new Sierra’s 19-inch alloys are shod in 195/65 R19 tyres. The lack of roof rails on the 2025 Sierra, along with black plastic cladding running from end-to-end also mark it out from its originator.
Tata Sierra new vs old interior
While the Sierra showcased at Auto Expo 2025 does not possess the final production interior, we know that it’ll have three screens – a digital instrument cluster, along with a central and passenger side infotainment touchscreen – all likely to be 12.3-inch units. Other cabin highlights will include a four-spoke steering wheel with an illuminated Tata logo, ambient lighting, and the option of having 4- and 5-seat configurations.
The cabin is most certainly more modern than the old Siera, which came with a more utilitarian grey plastic theme. The original SUV had a 5-seat layout, with a folding rear bench seat, and a large boot.
Tata Sierra new vs old powertrain
*Tata’s new 1.5-litre TGDi petrol engine and old Sierra Turbo’s 2.0-litre diesel engine.
Tata Sierra new vs old engine
Originally, the Sierra came with a naturally aspirated diesel engine, but a few years later, the SUV got a turbocharged 2.0-litre diesel unit making 91hp and 186Nm of peak torque. A 5-speed manual was standard, though Tata did offer a 4×4 version. Our comprehensive road tests saw the original Sierra post a 0-100kph time of 22.75 seconds (without the AC), and deliver a real world fuel efficiency figure of 9kpl.
The new Sierra, like many other current Tata cars and SUVs, will be offered with electric, petrol and diesel motive options. While the Sierra EV’s specifications are unknown, the ICE version is likely to come with 1.5-litre direct-injection turbo-petrol and 2.0-litre diesel engine options. The petrol unit was showcased at previous expos and makes 170hp and 280Nm of torque. The diesel unit is likely to be shared with the Harrier and Safari; in those SUVs, the 2.0-litre four-cylinder diesel engine makes 170hp and 350Nm of torque. Automatic and manual gearbox options will be on offer with the new Sierra. Tata has yet to confirm whether 4×4 tech will be offered on the new SUV, but has confirmed that the ATLAS architecture on which the new Sierra is based is capable of incorporating off-roading technology.
Also see:
Tata Sierra EV Concept SUV: the design story
