Autocar India
4w

Hi, we are buying a new SUV with a budget of around 16-17 lakh. Initially, we thought of buying the Sierra Pure Plus petrol NA, but after seeing reviews saying that it has the weakest engine in the lineup, we dropped the idea. Now we are thinking of buying the diesel Sierra. Our usage includes a 1,000-2,000km trip every three months, along with some city driving in between, so a diesel might make sense. However, we are still confused between the Creta and the Sierra. My dad, however, loves the Sierra.

Verified
4w
This is very much a case of heart versus head. If your father loves the Tata Sierra, then the Sierra Diesel is actually a good choice. The diesel engine is far better suited to the Sierra than the naturally aspirated petrol, offering strong performance and effortless cruising on long highway trips. The Sierra also feels larger inside, has a wider cabin and is the better pure 5-seater of the two, with excellent space and comfort for family use.
The Hyundai Creta is the more sensible choice. Its diesel engine is more refined, the overall ownership experience is smoother, and Hyundai's service network and aftersales support are generally stronger. It is also a proven product with a long track record.
The drawback of the Sierra is that its diesel engine is not as refined as the Creta's, and Tata's ownership experience can be more variable depending on the dealership.
Tata Sierra

Tata Sierra

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2d

I bought my beloved Hyundai Creta last year after months and months of deliberation and after checking more than 25 cars. Now with this E20 nonsense going on, I am not too sure I want to put my prized possession through all this bullshit. My annual usage is about 4000 to 5000 kms and mostly in the city with the occasional highway run. Please inform me which car I should go for if I have to move to another vehicle. I am not sure about an EV since my usage is less. Diesel is out of the question. Does that leave me with CNG?

Verified
1d

We don't think you should replace your 2025 Creta because of concerns around ethanol blending. Your car is E20 compliant, and while there has been plenty of discussion around E25, E27 and even E30 fuels, there is currently no official roadmap confirming such a transition. Even if higher ethanol blends are introduced in the future, the impact on a modern E20-compliant car is expected to be limited. Manufacturers typically engineer a degree of tolerance into their E20-compatible engines, so occasional exposure to slightly higher ethanol blends is unlikely to cause any immediate issues. Over a very long period, the most likely effects would be a small drop in fuel efficiency and slightly accelerated wear of certain fuel-system components, not a major reliability concern.With an annual running of just 4,000-5,000km, neither an EV nor a CNG car makes much financial sense. It would take a very long time to recover the additional cost through lower running costs. Similarly, a diesel isn't the right fit for your predominantly city usage.

VehicleHyundai Creta

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Posted on: 8 Jun 2026