[PrasannaDhana]

The Sierra diesel should atleast get the safari tune or higher if possible.


Honestly that 170 PS, 350 Nm is just adequate and not special by today's standards.

[DRPSREDDY]

Originally Posted by PrasannaDhana

The Sierra diesel should atleast get the safari tune or higher if possible.


Honestly that 170 PS, 350 Nm is just adequate and not special by today's standards.

Sierra chassis will be much smaller and lighter than the Harrier. Hence it will be quite a low weight car. Hence to save on fuel efficiency I think it may get an FGT or a detuned Turbo 2.0L engine that may develop around 140 Bhp as per my thinking.

[PrasannaDhana]

Originally Posted by DRPSREDDY

Sierra chassis will be much smaller and lighter than the Harrier. Hence it will be quite a low weight car. Hence to save on fuel efficiency I think it may get an FGT or a detuned Turbo 2.0L engine that may develop around 140 Bhp as per my thinking.

That's exactly why we need the 170 PS / 350 Nm tune, to make the Sierra a fun car to drive

I still remember driving the first gen harrier right after its launch and my first thought was Gosh this engine is sluggish.

Knowing tata, they will definitely go for the detuned version, like they did with Nexon vs Altroz diesels.

Really hoping they dont detune it.

[dipen]

Somehow looking at the multiple videos on youtube, it feels that the thick center B pillar does affect the airyness / visibility for the rear passenger.

Look at the images below to see why the Lounge variant was feeling so big. The seats in the yellow ICE car are right behind the end of the rear passesnger door while the Lounge one has it stretched completely mid-way in the boot area.





If Tata really wants to go all guns, and truly make a dent like they did with the Punch, they should really provide sliding and reclining rear seats for maximum flexibility and the sliding should almost stretch to the one showcased in the Lounge like EV Concept. The next gen Seltos has already been spotted testing and the XUV700 facelist is already expected around the same time.

There is a desperate need for Tata to make this a 10000 montly car. Price, appeal, specfications, comfort need to be as neutral as possible. (something for most people in every variant). If it canibalizes the Harrier, so be it.

And please put sensible 17 (max 18) inch Diamond cut designs in production spec. Creta rules for the comfort it provides apart from the right features at right pricepoint. Indian roads need at least 60 profile tyres for a family complaint ride.

With 225 55 R19; one is looking at 80000 in tyre replacement costs. The same also pushes the OEM Bill of material cost significantly.

[NaviSwift07]

Front and rear overhangs seems to be short in the spy shots. So, the wheelbase must be larger than the Curvv despite it shares the same ATLAS architecture and approximately same length (~4.3m) which results in better rear seat space.

[DRPSREDDY]

Originally Posted by PrasannaDhana

That's exactly why we need the 170 PS / 350 Nm tune, to make the Sierra a fun car to drive

Really hoping they dont detune it.

To make the car fun to drive it better be a petrol. Fun to drive mean lower on fuel efficiency and will have a toll on cafe norms in the diesels. The Thar Roxx despite being a Body on ladder frame and a heavy vehicle is above 2 tonnes (1800 kgs kerb weight for 4x2 variant) is able to do well with 150 Bhp engine and is a fun to drive car. So as the Sierra is a monocoque platform, it should be atleast 150-250 kgs lower at 1.5 tonne and 1.75 tonne kerb vis-a-vis for 4x2 and 4X4 variants. That is why 140 BHP 350 NM torque should be apt for the low kerb car for better mileage. That OMEGARC platform is quite old and heavy and that is why Harrier and Safari need a powerful engine.

Originally Posted by NaviSwift07

Front and rear overhangs seems to be short in the spy shots. So, the wheelbase must be larger than the Curvv despite it shares the same ATLAS architecture and approximately same length (~4.3m) which results in better rear seat space.

The X1 platform has been discarded and ATLAS architecture that is modular and flexible platform is adopted as it has been designed to be lighter and accommodate the 4x4 drive system with a slight modification. Why is it so? Because they want to take the game to the door of Mahindra's Thar Roxx. That is why it has short over hangs to be a potent off roader that is missing in the Tata Motors portfolio.

[kgt.v8]

Finally we get to see some camouflaged Sierra on the roads. This will help solidify some of Tata's claims to be able to release ICE or EV version of Sierra at least in a year.

Originally Posted by DRPSREDDY

Sierra is a monocoque platform, it should be atleast 150-250 kgs lower at 1.5 tonne and 1.75 tonne kerb vis-a-vis for 4x2 and 4X4 variants. That is why 140 BHP 350 NM torque should be apt for the low kerb car for better mileage. That OMEGARC platform is quite old and heavy and that is why Harrier and Safari need a powerful engine.

It does not feel right for Tata to put their money in Fiat's ageing 2.0 MJD diesel as they did 5 years back with Harrier and eventually new Safari. Tata is definitely running out of engine options to support their premium car offerings.
I tried to get more details on new 1.5 Kryojet specifications and max power output that is available, but all searches are throwing Curvv reviews only. What are the chances of Tata using 1.5 Kryojet with higher tune in Sierra?
Can Tata throw Curvv ball and use 1.2 Hyperion GDi in Sierra also?

Originally Posted by DRPSREDDY

The X1 platform has been discarded and ATLAS architecture that is modular and flexible platform is adopted as it has been designed to be lighter and accommodate the 4x4 drive system with a slight modification. Why is it so? Because they want to take the game to the door of Mahindra's Thar Roxx.

What happens with Omega ARC platform used for Harrier and Safari? This trend of coming up with new architecture and discontinuing old one does not instill lot of confidence. Tata is known to experiment and has a trend of discontinuing engines and platforms before 15 year lifecycle of the car ends.

Sierra EV with 4x4 would be good to have in Tata's stable, but as usual it may not bring much sales. EV and off roading, soft roading don't go hand in hand as per my observations in remote areas where charger anxiety is more real as compared to range anxiety.

[Cresterk]

Originally Posted by PrasannaDhana

The Sierra diesel should atleast get the safari tune or higher if possible.


Honestly that 170 PS, 350 Nm is just adequate and not special by today's standards.

True that. It was a great engine when it came out in the Jeep Compass all the way back in 2017 but it's somewhat outdated for a car in 2025. A small power bump at least is required.

[DRPSREDDY]

Originally Posted by kgt.v8

What happens with Omega ARC platform used for Harrier and Safari? This trend of coming up with new architecture and discontinuing old one does not instill lot of confidence. Tata is known to experiment and has a trend of discontinuing engines and platforms before 15 year lifecycle of the car ends.

Sierra EV with 4x4 would be good to have in Tata's stable, but as usual it may not bring much sales. EV and off roading, soft roading don't go hand in hand as per my observations in remote areas where charger anxiety is more real as compared to range anxiety.

Currently TATA Motors doesn't have platforms for greater than 4.6 meters and they will keep the OMEGARC platform running till ICE engine cars die as development new platforms for ICE doesn't pay off.

4X4 will be there in the EVs for sure, but it will also have 4X4 for the ICE variants. That is why the Atlas platform that is made for ICE cars has been designed to have 4X4 systems and which other car other than Sierra can have it in the near future. So both EV and ICE versions will have 4X4 in the Sierra for sure.

[14000rpm]

As much as I am excited that the Sierra is coming back, it is a bit 'Same Same but Different'.



Styling-wise I am sold out. It is one of the best designs. Heck, I can even go far as saying this design is truly global and can find a place in Europe too.

Having said, that I am a bit disappointed at the size. Shrink wrapping this to Creta size doesn't sit well with with me. Harrier size would be more like what I had imagined. But then, that's just me and my opinion.

I can also empathize with TATA Motors and their thinking process. Stunning styling draws the potential Creta buyers into the Showrooms where they can sell any other TATA product too. I like the TATA Motors design language of today.

It's another thing that the thinking man will look under the skin and see the issues that plague some TATA products and look the other way. How many of these 'look away' buyers can the styling of the Sierra hold back? time will tell.

Can't wait to see this car on the road.

[DRPSREDDY]

Originally Posted by kgt.v8

It does not feel right for Tata to put their money in Fiat's ageing 2.0 MJD diesel as they did 5 years back with Harrier and eventually new Safari. Tata is definitely running out of engine options to support their premium car offerings.

I tried to get more details on new 1.5 Kryojet specifications and max power output that is available, but all searches are throwing Curvv reviews only. What are the chances of Tata using 1.5 Kryojet with higher tune in Sierra?
Can Tata throw Curvv ball and use 1.2 Hyperion GDi in Sierra also?

Fiat's 2.0 L engine is the only go to engine at the fag end of ICE range and investing in a new engine at this juncture makes no financial sense.

1.5L Kryojet is the rebranded 1.5L diesel engine that did the duty on the Altroz and previous gen Nexon. I will be happy if this engine makes a higher power output of upto 140BHP but doubt it as it warrants investment in a new gearbox. Easier way out is a detuned 2.0L engine that will match the needs of the car.

Why will TATA use the 1.2L Hyperion GDi petrol engine in the Sierra, when they are developing a 4 cylinder 1.5L powertrain out of the same engine that is a modular block? The new engine will do the duty on the Sierra that may develop a healthy 140 BHP for the Sierra and 160 BHP for the Harrier. (Power output is purely my assumption)

[volkman10]

Camouflaged Tata Sierra visits Pune!

Only hope to garner numbers. This test vehicle can be seen wearing full camouflage and is likely to be the ICE version. It will have largely the same profile as the Sierra EV.




Link:

[me&mymachine]

tyers looks small in the photo

[DRPSREDDY]

Originally Posted by volkman10

Camouflaged Tata Sierra visits Pune!

Only hope to garner numbers. This test vehicle can be seen wearing full camouflage and is likely to be the ICE version. It will have largely the same profile as the Sierra EV.

Pune is the R&D center and mostly the Sierra will be built in the Pune plant as it will have the 2.0L engine that is too built there. So it starts from Pune!

Originally Posted by me&mymachine

tyers looks small in the photo

Spot on! The car looks too big for the size of the tyres or say tyres look puny. Maybe this is the base model. There is a lot of gap between the tyre and the wheel arches.

But somehow I feel the car is same as the Creta but the show car looked much bigger at the Auto Expo.

[volkman10]

Tata Sierra revealed through its patent filing: