Tata Motors is gearing up for a major product offensive, focusing on filling a critical gap in its flagship line-up: the absence of a potent petrol engine. The introduction of the new 1.5-litre tGDi petrol engine is set to power three of its most important Big SUVs: the Tata Harrier, Tata Safari, and the highly anticipated return of the Tata Sierra. This strategic move, detailed in recent dealer and investor meets, positions Tata to aggressively take on rivals in the competitive Indian SUV India 2026 market.
Here is a detailed breakdown of the upcoming models, specifications, expected launch dates, and pricing:
The New Heart: 1.5L Turbo Petrol Engine Specifications
The centerpiece of this launch strategy is Tata’s indigenously developed 1.5-litre four-cylinder Turbocharged Gasoline Direct Injection (tGDi) petrol engine. This powerhouse was first showcased at the Auto Expo 2023 and is designed to offer a strong blend of performance and efficiency.
| Engine Type | 1.5-litre, 4-cylinder, tGDi (Turbo Gasoline Direct Injection) |
| Max Power Output | 168 – 170 PS (or bhp) |
| Peak Torque | 280 Nm |
| Transmission Options | 6-speed Manual Transmission (6MT) & 7-speed Dual Clutch Transmission (7DCT) |
| Launch Timeline (Engine Debut) | Q4 FY25-26 / Early 2026 |
This new engine will be crucial, as it provides power comparable to the current 2.0-litre Kryotec diesel engine (which also delivers 170 PS) while offering the inherent advantages of a petrol unit, such as reduced maintenance costs and better city driveability.
The Big Trio: Launch Details and Key Facts
1. Tata Harrier Petrol
The Tata Harrier Petrol variant is arguably the most anticipated launch. Currently, the Harrier only runs on diesel, limiting its appeal in certain markets.
Expected Launch Date: November 2025 (Festive Season) to March 2026 (end of FY25-26).
Expected Price: Starting price is estimated to be around ₹12.50 Lakh to ₹15.50 Lakh (Ex-showroom).
Pricing Strategy: The petrol variant is projected to be approximately ₹1 lakh more affordable than its diesel counterpart, providing a significant advantage over rivals.
2. Tata Safari Petrol
As the three-row flagship SUV of the brand, the Tata Safari Petrol will also receive the same 1.5L tGDi engine to enhance its competitive edge against models like the Mahindra XUV700.
Expected Launch Date: Coinciding with the Harrier Petrol launch, between November 2025 and March 2026.
Performance: It will boast the same 170 PS and 280 Nm figures. The shift to petrol is aimed at regaining market share from rivals that offer dual-fuel options.
3. Tata Sierra ICE (Internal Combustion Engine)
The return of the iconic Tata Sierra is scheduled as a dual-powertrain offering, with the EV version launching first. The ICE (petrol/diesel) version will follow shortly after.
Sierra EV Launch: The fully electric version is expected to debut first, slated for the Diwali 2025 festive season (October-November 2025).
Expected EV Price: ₹22 Lakh – ₹28 Lakh (Ex-showroom).
Sierra ICE Launch Date: The petrol and diesel trims are confirmed for an Early 2026 launch, likely by March 2026.
Engine Details:
It will feature the new 1.5L tGDi petrol engine.
It may also receive a less powerful 1.5-litre Naturally Aspirated (NA) petrol unit for entry-level variants.
The diesel option will be the proven 2.0-litre Kryotec unit.
Expected ICE Price: The Sierra Petrol models are anticipated to start around ₹12 Lakh, extending up to ₹20 Lakh for top-end trims.
This relaunch positions the Sierra to compete directly in the mid-size SUV segment against strong players like the Hyundai Creta and Kia Seltos, while offering a unique, nostalgic, and premium experience.
