The Tata Sierra and the Mahindra BE 6 may look like they belong in the same premium SUV conversation, but they serve very different buyers. The Sierra is an ICE SUV (petrol and diesel) built around flexibility and easy long-distance usability. The BE 6 is a dedicated electric SUV that prioritises instant performance, a quieter cabin experience, and EV-first tech.
If you have dependable home or workplace charging and most of your driving is predictable, the BE 6’s EV advantages are hard to ignore. If your driving includes frequent, unplanned highway runs, long intercity routes, or you simply do not want to plan charging stops, the Sierra’s petrol and diesel options can fit better.
Tata Sierra vs Mahindra BE 6: Dimensions
Before picking a powertrain, it helps to check the size and practicality. Dimensions affect city manoeuvrability, rear-seat comfort (wheelbase), and luggage convenience (boot space). Ground clearance matters on bad roads and steep ramps.
| Dimension | Tata Sierra | Mahindra BE 6 |
| Length | 4340 mm | 4371 mm |
| Width | 1841 mm | 1907 mm |
| Height | 1715 mm | 1627 mm |
| Wheelbase | 2730 mm | 2775 mm |
| Boot space | 622 litres (up to 1257 litres with rear seats folded) | 455 litres |
| Ground clearance | 205 mm | 207 mm (unladen) |
What this means in real use:
- BE 6 is wider and has a longer wheelbase, which generally helps shoulder room and rear-seat comfort.
- Sierra is taller, and its boot capacity is the big headline. If you do frequent airport runs or weekend trips, that larger boot can be a genuine daily advantage.
- Ground clearance is effectively similar, so both should handle typical Indian speed breakers confidently.
Quick takeaway: Sierra is the more luggage-friendly SUV, while the BE 6 brings a wider stance and longer wheelbase for a more “big-car” feel.
Tata Sierra vs Mahindra BE 6: Engine & Transmission
This is the core difference: ICE flexibility versus EV simplicity. With the Sierra, you choose petrol or diesel and a gearbox that matches your usage. With the BE 6, you choose battery size and live around charging, while getting smooth single-speed performance every day.
| Powertrain detail | Tata Sierra | Mahindra BE 6 |
| Powertrain type | Petrol and diesel (ICE) | Electric |
| Engine / motor options | 1.5 NA petrol, 1.5 turbo-petrol, 1.5 turbo-diesel | Single motor with two battery options |
| Transmission | NA petrol: 6MT or 7DCT; Turbo petrol: 6AT; Diesel: 6MT or 6AT | Single-speed automatic |
| Output (claimed) | NA petrol: 106 PS, 145 Nm; Turbo petrol: 160 PS, 255 Nm; Diesel: 118 PS, 260 Nm (MT) / 280 Nm (AT) | 59 kWh: 228 bhp, 380 Nm; 79 kWh: 282 bhp, 380 Nm |
| Drivetrain | Front-wheel drive | Rear-wheel drive |
| Efficiency | Depends heavily on engine and driving conditions | Claimed range: 557 km (59 kWh) and 683 km (79 kWh), real range varies with speed and AC use |
How to decide based on usage:
- If you want effortless, quiet performance in traffic, the BE 6 will feel smoother and quicker to respond at everyday speeds.
- If you do frequent long trips where charging availability is uncertain, the Sierra is simply easier to live with because refuelling is quick and route planning is simpler.
- Drivetrain character also differs. Sierra is front-wheel drive, while BE 6 is rear-wheel drive, which can feel more balanced under acceleration.
Quick takeaway: BE 6 is the stronger performance and refinement pick in daily driving, Sierra is the easier long-distance choice when charging access is a question mark.
Tata Sierra vs Mahindra BE 6: Features & Comfort
Feature lists matter only when they improve daily comfort. Screens, audio quality, AC performance, seat comfort, and parking aids make the biggest difference. Also, both cars vary a lot by variant, so compare the specific trims you’re considering.
| Feature | Tata Sierra | Mahindra BE 6 |
| Infotainment | Large touchscreen, higher variants add a multi-screen cabin layout | Large dual-screen style cabin layout (variant dependent) |
| Audio | JBL 12-speaker with Dolby Atmos on higher variants | Premium multi-speaker setup (variant dependent) |
| Climate control | Automatic climate control, dual-zone on higher variants | Automatic climate control (variant dependent) |
| Sunroof / glass roof | Panoramic sunroof on higher variants | Panoramic glass roof (variant dependent) |
| Ventilated seats | Available on higher variants | Available on higher variants |
| Powered driver seat | Available on higher variants | Available on higher variants |
| Rear AC vents | Yes | Yes |
| Parking aids | Rear camera and 360 camera on higher variants | Rear camera and 360 camera on higher variants |
| Convenience | Powered tailgate on higher variants | EV-focused features like regen modes, drive customisation (variant dependent) |
What you’ll feel day to day:
- Sierra’s cabin appeal is its mix of practicality and premium touches, especially if you want features like a big boot, panoramic sunroof, and strong audio without moving into a higher price band.
- BE 6’s cabin advantage is the EV experience itself: quieter operation, smoother movement, and tech-first presentation that feels premium even before you start ticking option boxes.
Quick takeaway: Sierra gives strong comfort and premium features for the price, BE 6 feels more high-tech and “new-age” because of the EV platform and cabin approach.
Tata Sierra vs Mahindra BE 6: Safety Features
Safety should be judged in two layers: crash-test performance (when available) and the safety suite (airbags, ESC, ADAS). A published crash rating carries a lot of weight.
| Safety item | Tata Sierra | Mahindra BE 6 |
| Bharat NCAP rating | Not published yet | 5-star Bharat NCAP (Adult: 31.97/32, Child: 45/49) |
| Airbags | 6 airbags (standard across the range) | 6 airbags standard; knee airbag is optional on some variants |
| ESC | Yes | Yes (standard across variants) |
| ISOFIX | Yes | Yes |
| 360 camera | Higher variants | Higher variants |
| ADAS | Level 2 ADAS on higher variants | Level 2 ADAS on higher variants (variant dependent) |
Practical safety verdict:
- BE 6 has the clearer advantage today because it has a published 5-star Bharat NCAP rating with very high scores.
- Sierra’s safety equipment list is strong, but without an official published rating yet, it cannot match BE 6’s verified crash-test confidence.
Quick takeaway: BE 6 is the safer “known quantity” today because its 5-star Bharat NCAP rating is already published.
Tata Sierra vs Mahindra BE 6: Price Comparison
Price decides not just affordability, but also what you can realistically get at your budget. The Sierra sits much lower at entry, while the BE 6 is priced as a premium electric SUV.
| Price (ex-showroom) | Tata Sierra | Mahindra BE 6 |
| Starting price | Rs 11.49 lakh (introductory) | Rs 18.90 lakh |
| Typical top-end | Up to about Rs 18.49 lakh (depending on variant) | Up to about Rs 27.65 lakh (depending on variant) |
How to think about value:
- If you want the maximum SUV for the money right now, Sierra’s lower entry price and strong feature list make it the easier recommendation.
- If you can charge conveniently and want EV refinement plus a published 5-star Bharat NCAP rating, BE 6’s premium can make sense, especially for heavy city usage.
Quick takeaway: Sierra is the value-heavy pick, BE 6 is the premium EV pick with a higher entry cost.
Summary
Choose the Tata Sierra if you want a feature-rich SUV with petrol and diesel options, a huge boot, and stress-free long-distance usability without planning charging. It’s the more practical choice for buyers with unpredictable travel, frequent highway runs, or those who simply prefer the flexibility of ICE.
Choose the Mahindra BE 6 if you have convenient charging, want a quieter and smoother daily drive, prefer strong performance feel in the city, and want the reassurance of a published 5-star Bharat NCAP rating with very high scores. Overall, if your lifestyle supports charging, the BE 6 is the stronger modern ownership proposition. If charging is not convenient or your driving is long-distance heavy, Sierra is the smarter and simpler fit.
FAQ about Tata Sierra vs Mahindra BE 6
Q. Which one is better for daily city commuting?
Mahindra BE 6, because EVs feel smoother in stop-go traffic and respond instantly without gear changes, assuming you can charge conveniently
Q. Which one is better for frequent highway road trips?
Tata Sierra, because refuelling is quick and route planning is simpler than depending on charging stops.
Q. Does the Mahindra BE 6 have an official safety rating?
Yes, it has a published 5-star Bharat NCAP rating with very high adult and child occupant protection scores.
Q. Does the Tata Sierra have ADAS?
Yes, Level 2 ADAS is available on higher variants.
Q. Which one is better value for money?
If you want the most SUV and features per rupee at a lower entry price, the Tata Sierra is better value. If you prioritise EV refinement and the published crash rating and can charge easily, the BE 6 can justify its premium.
