2026 Tata Sierra Petrol, Diesel Variants Explained — Which One To Buy?

26 November 2025
By Mahesh Yadav
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In this variant explained article, you'll find out which variant of the Tata Sierra you should buy based on ex-showroom prices, variant-wise features and value for money for a balanced ownership experience. Here we compare and objectively analyse the 2026 Sierra’s petrol and diesel variants and their features. Then we will compare the engine specs, dimensions and mileage of the 2026 Tata Sierra with its competitors and other petrol- & diesel-powered crossovers and SUVs such as the Hyundai Creta, Kia Seltos, Maruti Vitara, Victoris, MG Astor and Honda Elevate.

Tata Sierra 2026 Variants Explained — Petrol & Diesel

Update (Nov 26, 2025): In this article, you will find variant wise features of the new Sierra 2026. Variant-wise recommendation will be available once we have the full price list from Tata Motors.

What Is The Price Of New Tata Sierra Variants?

The Tata Sierra is available with the following 5 powertrain options:

1.5L normal petrol-manual (6MT)
1.5L normal petrol-automatic (7DCT)
1.5L turbo petrol-automatic (6TC)
1.5L turbo diesel-manual (6MT)
1.5L turbo diesel-automatic (6TC)

2026 Tata Sierra Variant-Poiwertrain Combinations

The following table presents the variant-engine-transmission combinations of the Tata Sierra 2026:

2026 TATA SIERRA VARIANT-WISE POWERTRAIN OPTIONS
Variant	1.5L Normal Petrol-MT	1.5L Normal-Petrol-AT	1.5L Turbo Petrol-AT	1.5L Diesel-MT	1.5L Diesel-AT
Smart Plus	✔	❌	❌	✔	❌
Pure	✔	✔	❌	✔	✔
Pure Plus	✔	✔	❌	✔	✔
Adventure	✔	✔	❌	✔	❌
Adventure Plus	✔	❌	✔	✔	✔
Accomplished	✔	❌	✔	✔	✔
Accomplished Plus	❌	❌	✔	✔	✔

Tata Sierra Smart Plus — Base Model Standard Features

The base model of the Sierra is available with 1.5L normal petrol-manual and 1.5L turbo diesel manual powertrain options. The price of the petrol model is Rs. 11.49 lakh while Sierra diesel base model prices are not available at the moment.

2026 TATA SIERRA SMART PLUS POWERTRAIN OPTIONS
Powertrain	Availability
1.5L Normal Petrol-MT	✔
1.5L Normal-Petrol-AT	❌
1.5L Turbo Petrol-AT	❌
1.5L Turbo Diesel-MT	✔
1.5L Turbo Diesel-AT	❌

The base model of the Sierra gets the following notable features:

TATA SIERRA SMART PLUS BASE MODEL STANDARD FEATURES
Safety	Functional	Style
Std. safety features	Keyless entry w/ push-button start/stop	Connected front & rear LED light bar
Boot safety light	Power mirrors	LED DRLs
Electronic parking brake w/ auto hold	Rear window sunshades	Flush door handles w/ locator lights
All disc brakes	Rear AC vents	Digital instrument cluster
Electronic stability control	Sliding front armrest	4-spoke steering w/ backlit Tata logo
Hill start assist	Engine idle start/stop (Normal petrol only)	17-inch steel wheels
LED projector headlamps	Tilt & telescopic steering	Gloss black door cladding
5x 3-point seatbelts	2x front USB (A & C)	Dual-tone roof
ISOFIX	Boot lamp	LED turn indicators
2x front side thorax airbags	Follow me home headlamps	Turn signals on outside mirrors
2x curtain airbags	2x front vanity mirrors	Body-coloured bumpers & door handles
Speed-sensing auto door locks	Height-adjustable front seat belts	Gloss black outside mirrors
Day/night inside mirror	12V power outlet in boot	Fabric upholstery
Anti theft alarm	8-way driver sunvisor
Traction control	Manual AC w/ touch controls
Dual-tone horn	Height-adjustable driver seat*

Bold = most notable features for a car in C-segment costing Rs. 11.49 lakh (ex-showroom)

* = Expected but not confirmed

For a car costing close to Rs. 11.49 lakh ex-showroom, the Sierra base variant seems to miss out on a few must-have features such as:

Music system or touchscreen
Steering-mounted controls
Rear armrest
Wheel covers
Parcel tray
Auto AC
TPMS

Tata Sierra Smart Plus vs Pure Variant — Price, Feature Comparison

In addition to the manual transmissions, the Sierra Pure variant also gets the petrol and diesel engines with automatic transmission options.

2026 TATA SIERRA PURE POWERTRAIN OPTIONS
Powertrain	Availability
1.5L Normal Petrol-MT	✔
1.5L Normal-Petrol-AT	✔
1.5L Turbo Petrol-AT	❌
1.5L Turbo Diesel-MT	✔
1.5L Turbo Diesel-AT	✔

The 2026 Sierra Pure variant offers the following additional notable features:

TATA SIERRA PURE FEATURES OVER SMART PLUS
Infotainment & Style	Functional & Safety
10.25-inch touchscreen	Power-folding mirrors w/ auto fold
4x speakers	Cruise control
4x tweeters	+City driving mode
Wireless Android Auto	+Sport drive mode (w/ turbo only)
Wireless Apple Carplay	Paddle shifters
USB, FM, Bluetooth	Tyre pressure sensors (TPMS)
Steering-mounted controls	Hill descent control
Voice commands	Rear camera
Shark-fin antenna
Wheel covers*

* = Expected but not confirmed

This variant misses out on the following features:

Auto headlamps
Auto wipers
Auto AC
Rear defogger
Rear parcel tray
Rear armrest

Tata Sierra Pure vs Pure Plus Variant — Price, Feature Comparison

In the Sierra Pure Plus variant also, you get the same powertrain options as the lower Pure trim.

2026 TATA SIERRA PURE PLUS POWERTRAIN OPTIONS
Powertrain	Availability
1.5L Normal Petrol-MT	✔
1.5L Normal-Petrol-AT	✔
1.5L Turbo Petrol-AT	❌
1.5L Turbo Diesel-MT	✔
1.5L Turbo Diesel-AT	✔

This variant adds the following features to the mix:

TATA SIERRA PURE PLUS FEATURES OVER PURE
Functional	Safety & Style
Auto headlamps	Panoramic sunroof
Auto wipers	17-inch alloy wheels
2-zone auto AC	Rear washer wiper
Rear 2x USB-C (65W)	Rear defogger
1-touch up/down driver window

You may miss the following features in the Sierra Pure Plus variant:

Front parking sensors
Front fog lamps
Rear parcel tray
Rear armrest
Split-folding rear seat backs

Tata Sierra Pure Plus vs Adventure Variant — Price, Feature Comparison

The Adventure variant of the Sierra doesn’t get the diesel-automatic powertrain but retains the other 3, which are available in the lower Pure and Pure Plus trims.

2026 TATA SIERRA ADVENTURE POWERTRAIN OPTIONS
Powertrain	Availability
1.5L Normal Petrol-MT	✔
1.5L Normal-Petrol-AT	✔
1.5L Turbo Petrol-AT	❌
1.5L Turbo Diesel-MT	✔
1.5L Turbo Diesel-AT	❌

The Sierra Adventure variant add the following notable features over the Pure Plus trim:

TATA SIERRA ADVENTURE FEATURES OVER PURE PLUS
Functional	Style
Front fog lamps w/ cornering	7-inch full-colour LCD instrument cluster
360-degree camera	Leather steering wheel
Blind-view monitoring	Leather gear knob
Front parking sensors	Roof rails
Rear parcel tray

You may miss the following features in the Sierra Adventure variant:

Split-folding rear seat backs
Rear armrest
Wireless phone charger
Front seat under-thigh support (available in higher Adventure Plus variant)

Tata Sierra Adventure vs Adventure Plus Variant — Price, Feature Comparison

The Adventure Plus variant offers turbo diesel-automatic and turbo petrol-automatic in addition to the normal petrol-manual and turbo diesel-manual. However, it misses out on the normal petrol-automatic powertrain.

2026 TATA SIERRA ADVENTURE PLUS POWERTRAIN OPTIONS
Powertrain	Availability
1.5L Normal Petrol-MT	✔
1.5L Normal-Petrol-AT	❌
1.5L Turbo Petrol-AT	✔
1.5L Turbo Diesel-MT	✔
1.5L Turbo Diesel-AT	✔

It offers the following notable features over the lower Adventure variant:

TATA SIERRA ADVENTURE PLUS FEATURES OVER ADVENTURE
Style & Infotainment	Functional
Larger, 12.3-inch touchscreen	Vanity mirror w/ illumination	+2x terrain modes (Wet, Rough)
Larger, 10.25-inch LCD instrument cluster	Front seat back pockets	Rear seat 2-step recline
Ambient lighting (dashboard)	60-40 split-folding rear seatbacks	Front seat adjustable underthigh support
Larger, 18-inch alloy wheels (turbo only)	2x front USB-C (65W)	Rear armrest
	Manual boss mode	Cooled glovebox
	Suspension w/ FDD

FDD = Frequency dependent damping

Boss mode = ability to move the front passenger seat from the rear

Even in this variant, you may miss features like:

Wireless phone charger
Power driver seat with memory
Power tail gate
Auto-dimming inside mirror

Tata Sierra Adventure Plus vs Accomplished Variant — Price, Feature Comparison

The Sierra Accomplished variant gets all powertrain options except for the normal petrol-automatic.

2026 TATA SIERRA ACCOMPLISHED POWERTRAIN OPTIONS
Variant	Accomplished
1.5L Normal Petrol-MT	✔
1.5L Normal-Petrol-AT	❌
1.5L Turbo Petrol-AT	✔
1.5L Turbo Diesel-MT	✔
1.5L Turbo Diesel-AT	✔

The Sierra Accomplished trim offers the following notable features over the lower Adventure Plus variant:

HYUNDAI SiERRA ACCOMPLISHED FEATURES OVER ADVENTURE PLUS
ADAS & Safety	Infotainment	Style & Functional
Adaptive cruise control w/ stop-&-go traffic assist	+2x tweeters	Ventilated front seats
Forward collision warning	+1x centre stage speaker	6-way power driver seat
Forward collision avoidance assist	+1x subwoofer	Puddle lamps
Lane departure warning	5.1 surround sound	Wireless phone charger
Lane keep assist	Dolby Atmos sound tuning	Leather upholstery
Lane follow assist	All JBL Black speakers	Ambient lighting (centre console)
Forward collision avoidance assist		Head-up display
Auto high beam		Larger, 19-inch alloy wheels (turbo only)
Traffic sign recognition

In this variant, you may miss features like:

Power tail gate
Memory & welcome function for driver seat

Tata Sierra Accomplished vs Accomplished Plus Variant — Price, Feature Comparison

The Accomplished Plus variant of the Sierra gets only turbocharged engine options and no normal petrol engine at all.

2026 TATA SIERRA ACCOMPLISHED PLUS POWERTRAIN OPTIONS
Variant	Accomplished Plus
1.5L Normal Petrol-MT	❌
1.5L Normal-Petrol-AT	❌
1.5L Turbo Petrol-AT	✔
1.5L Turbo Diesel-MT	✔
1.5L Turbo Diesel-AT	✔

It offers the following notable features over the lower Accomplished variant:

TATA SIERRA ACCOMPLISHED PLUS FEATURES OVER ACCOMPLISHED
ADAS & Safety	Infotainment	Functional	Style
Rear cross traffic alert	+1x 12.3-inch touchscreen	Air purifier w/ AQI display	Welcome & goodbye lights
Blind view monitor	Telematics	Power tail gate	Sweeping indicators
Speed assist w/ traffic sign & map	Alexa voice commands	Memory & welcome for driver seat
Rear fog lamps	In-build navigation	Auto-dimming inside mirror