I am currently driving Maruti Suzuki Swift Dzire VDi (2013) diesel manual. I want to decide between Tata Harrier Adventure X Plus DK and Tata Sierra accomplished (both diesel). On Harrier, I am getting discount of approximately 1.6 lakh and on Sierra, I am getting approximately 70,000 discount. Which one should I prefer? My daily driving is approximately 70km with 80% driving on state highway and 20% in city. There is no budget constraint.
For your 70km daily running with 80 percent on state highways, the Harrier is the better fit. The 2.0-litre diesel produces 170hp and 350Nm, making it considerably more effortless than the Sierra’s 1.5-litre diesel, particularly for overtaking and sustained highway cruising. The Harrier also has excellent high-speed stability and ride quality, which should suit your usage well.
The Sierra Accomplished Diesel is the newer and more compact option. It has a slightly better ride over broken roads and its smaller dimensions will make it easier to manage in the city. Its diesel is also more economical in real-world testing, but the difference is small on the highway: 14.56kpl for the Sierra versus 14.36kpl for the Harrier.
In your case, the Rs 1.6 lakh discount on the Harrier makes the decision even easier. You get the larger, more powerful engine, better highway performance and a substantial discount, while the Sierra is still a new product without a long-term ownership track record.

Tata Harrier
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Posted on: 22 Sept 2026
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