Tata Sierra ARAI mileage revealed — What does the diesel return?
- 1Tata Sierra comes in four trims: Smart Plus, Pure, Adventure, and Accomplished
- 2Prices start at Rs 11.49 lakh and go up to Rs 21.29 lakh
- 31.5L diesel and turbo petrol mileage revealed, NA petrol still pending
The Tata Sierra’s comeback has been hard to ignore. Since its launch in November 2025, the SUV has crossed one lakh bookings and moved past 10,000 deliveries. Sierra has generated the kind of buzz rarely seen in India's fiercely competitive mid-size SUV segment.
Yet, throughout all this momentum, one fundamental question has gone conspicuously unanswered: what is the Tata Sierra ARAI mileage?
While buyers were making six-figure purchasing decisions, Tata Motors never officially disclosed the certified fuel efficiency numbers. Now, thanks to an RTI application filed by social media user Vahan Warta and data sourced directly from ARAI, the Tata Sierra mileage figures have finally been brought to light.
The figure reveals both the Tata Sierra diesel mileage and the turbo petrol returns. Scroll down for a detailed look at the new Tata Sierra's claimed mileage.
new Tata Sierra engine options
| Specs | 1.5-litre NA Petrol (NA Revotron) | 1.5-litre Turbo Petrol (TGDi Hyperion) | 1.5-litre Diesel (CRAIL/CRDi Kryojet) |
|---|---|---|---|
| Cylinder | 4 Cylinder | ||
| Power | 106PS at 6000 rpm | 160PS at 5000 rpm | 118PS at 4000 rpm |
| Torque | 145Nm at 2100 rpm | 255Nm at 1750-4000 rpm | 260Nm at 1500-2750 rpm (MT) 280Nm at 1500-2750 rpm (AT) |
| Gearbox | 6-speed MT / 7-speed DCT | 6-speed AT | 6-speed MT / 6-speed AT |
The new Sierra offers three engine options. The 1.5-litre diesel continues as a proven choice, paired with either a 6-speed manual or a 6-speed automatic. Alongside it is a 1.5-litre naturally aspirated petrol engine, offered with a 6-speed manual and a 7-speed DCT. Sitting at the top is the new 1.5-litre 4-cylinder T-GDI turbo-petrol, which comes exclusively with a 6-speed automatic. Another key highlight is the addition of an AWD drivetrain, a first for Tata’s new-generation lineup.
2026 Tata Sierra ARAI mileage — What the numbers say
For months after the Sierra's launch, Tata Motors chose not to officially publish ARAI-certified fuel efficiency figures. This unusual silence raised questions in an Indian market where mileage is one of the primary factors driving purchase decisions. The opacity was filled, ironically, not by a press release but through an RTI response.
According to RTI data accessed via ARAI and reported by Rushlane, the Tata Sierra mileage figures break down as follows: the 1.5L Kryojet diesel received ARAI certification on 21 November 2025, returning 18.8 kmpl; the 1.5L TGDi Hyperion petrol was certified on 11 December 2025, recording 13.5 kmpl. Notably, the 1.5L NA Revotron petrol variant's ARAI certificate has not yet been issued.
It is worth noting that around the time of its launch, Tata Motors had drawn attention to a different fuel efficiency achievement. The Sierra’s 1.5-litre Hyperion petrol recorded 29.9 kmpl during a controlled 12-hour endurance run at the NATRAX proving ground in Indore, earning a spot in the India Book of Records. It sounds impressive but that number comes from a controlled test and is not directly comparable to standard ARAI-certified mileage figures.
New Tata Sierra price list
| Variant | 1.5L N/A petrol | 1.5L diesel | 1.5L turbo petrol | ||
|---|---|---|---|---|---|
| 6MT | 7DCT | 6MT | 6AT | 6AT | |
| Smart Plus | Rs 11.49 lakh | - | Rs 12.99 Lakh | - | - |
| Pure | Rs 12.99 lakh | Rs 14.49 Lakh | Rs 14.49 Lakh | Rs 15.99 Lakh | - |
| Pure Plus | Rs 14.49 lakh | Rs 15.99 Lakh | Rs 15.99 Lakh | Rs 17.49 Lakh | - |
| Adventure | Rs 15.29 lakh | Rs 16.79 Lakh | Rs 16.49 Lakh | - | - |
| Adventure Plus | Rs 15.99 lakh | - | Rs 17.19 Lakh | Rs 18.49 Lakh | Rs 17.99 Lakh |
| Accomplished | Rs 17.99 lakh | - | Rs 18.99 Lakh | Rs 19.99 Lakh | Rs 19.99 Lakh |
| Accomplished Plus | - | - | Rs 20.29 Lakh | Rs 21.29 Lakh | Rs 20.99 Lakh |
The 2026 Tata Sierra is priced competitively across its range. The N/A petrol variants start at Rs 11.49 lakh and go up to Rs 16.79 lakh. The diesel variants are priced between Rs 12.99 lakh and Rs 21.29 lakh, while the turbo petrol variants start at Rs 17.99 lakh and rise up to around Rs 22.99 lakh.
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