Tata Sierra EV's smaller battery pack has more power and the bigger one has less, why so?

Tata Sierra EV's smaller battery pack has more power and the bigger one has less, why so?

by with No Comment Car Review

Tata Motors has launched Sierra EV in the Indian market after a long wait. Available at a starting price of just ₹ 18.79 lakh (ex-showroom), this SUV comes with 63 kWh and 75 kWh battery options. One thing was most discussed at the time of launch – why is the power output of the 75 kWh RWD variant less than the 63 kWh RWD?

The 63 kWh model produces 238 PS (175 kW), while the 75 kWh RWD produces only 209 PS (154 kW). This is a difference of 29 PS (about 12%), while the 75 kWh variant is also costlier and has a longer range. Tata has now given an official statement regarding this.

Why is power reduced in bigger packs?

According to Tata Motors, this is not a mistake but an intentional engineering decision. Both batteries are packed in the same volume. The 75 kWh battery uses high-capacity cells and Cell-to-Pack (C2P) architecture, achieving excellent packaging efficiency of 141 Wh/kg and 8.9 km/kWh energy efficiency.

This brings the ARAI range to 665 km (99 km more than 63 kWh). However, this resulted in a slight reduction in operating voltage, resulting in reduced peak power. The company says that the peak torque of 315 Nm is the same in both the RWD variants, so there will be no significant difference in daily driving and city-highway performance. 75 kWh is range-focused, while 63 kWh is performance-oriented.

Design and interior

Sierra EV comes with an attractive design like the ICE model. Its highlights are closed-off grille, end-to-end LED DRL, LED taillights, flush door handles, 19-inch alloy wheels with aero inserts and a large panoramic sunroof (1525mm x 925mm). The 2730 mm wheelbase and 622 liters of boot space add to the practicality.

The cabin has a triple screen setup (two 12.3-inch + 10.25-inch). Light colours, spacious feel, ventilated and memory seats, extendable under-thigh support, rear blinds and leatherette upholstery provide a premium experience.

Features and safety

12-speaker JBL sound system (Dolby Atmos), wireless Android Auto/Apple CarPlay, EV Route Planner, DrivePay (UPI), AirConsole Gaming, iRA.ev connectivity, 540° camera and gesture-controlled powered tailgate are the big features.

For safety, it has features like L2+ ADAS, 6 airbags, strong structure and V2L/V2V. 6 terrain modes and crawl control are also provided for off-road.

Battery, Motor and Range

The 63 kWh battery gives 565 km ARAI range, while the 75 kWh will give 665 km range. Both RWD have 315 Nm torque. AWD option is also available in 75 kWh. Fast charging can add 263 km range in 15 minutes. The speed of 0-100 km/h is completed in 5.8 seconds. Built on the Acti.ev platform, this SUV offers a great combination of performance and range.

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Tata Sierra EV will make a grand entry tomorrow! Know launch details

Tata Sierra EV will make a grand entry tomorrow! Know launch details

by with No Comment Car Review

Tata Motors is bringing back its classic Sierra in electric form. The new Tata Sierra EV (Sierra.ev) is going to create a stir in the mid-size electric SUV segment with modern design, strong performance and premium features. After the release of a new video of the production-spec model, many of its details have come to light. It is built on the acti.ev+ platform, which improves cabin space, safety and handling by placing the battery under the flat floor.

Its launch is going to happen tomorrow i.e. on 30th June 2026. The estimated price could be between ₹20-25 lakh (ex-showroom). It will be available in both RWD and QWD (Quad Wheel Drive/AWD) options. Sierra EV will strengthen Tata's EV lineup with a range of up to 500 km, level-2+ ADAS, triple screen setup and modern features. Let us take a look at the details revealed so far before the launch.

Design and interior

The design of the Sierra EV maintains the spirit of the original Sierra and comes with EV-specific updates. Closed-off grille, smoother bumper and EV-style front facia give it a distinct identity. The iconic wrap-around rear glass and the strong SUV silhouette remain intact. Body-coloured panels and modern lighting setup give it a premium look. Overall, this is an SUV with retro-modern appeal, which will be liked by both family and adventure lovers.

The cabin is spacious and premium. The acti.ev+ platform results in a flat floor, which increases leg room and headroom. It is expected to have a triple-screen dashboard (15-inch touchscreen, digital instrument cluster and passenger display). Features like high-quality materials, ventilated seats, panoramic sunroof and premium audio system (JBL) will give it a luxury feel. The 5-seater layout is perfect for family use.

Features and safety

Sierra EV will be feature-packed. Features like Level-2+ ADAS (Adaptive Cruise Control, Lane Assist, Autonomous Emergency Braking), 360° camera, connected car technology, wireless charging, ventilated/heated seats and V2L (Vehicle-to-Load) are included. The infotainment system will be based on Harman and Samsung tech. Battery-as-a-Service (BaaS) option may also be available, which will make the purchase economical.

Like Tata's EVs, its safety will also be strong. 6 airbags, ABS with EBD, ESP, traction control, 360° camera, all-disc brakes and electronic parking brake will be standard. acti.ev+ platform provides superior crash safety and low center of gravity. Features like blind spot monitoring, rear cross traffic alert with level-2+ ADAS will be available in higher variants. BNCAP 5-star rating is expected.

Battery, Motor and Range

Sierra EV will come in 65 kWh and 75 kWh battery pack options. In some reports, 55 kWh has also been said. The RWD variant will come with a single motor, while the top QWD (AWD) variant will offer a dual-motor setup (approximately 260 bhp+ and 504 Nm torque). Estimated range is 420-500 km (WLTP). With fast charging support, it can be fully charged in 6 hours. acti.ev+ architecture ensures performance, efficiency and long range. After launch, it will compete with vehicles like Creta Electric and BE6. For accurate information we will have to wait till tomorrow i.e. 30th June.

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