Yash Chandravanshi
•3dI’m considering the Kia Seltos GTX automatic and need advice on choosing between petrol and diesel. My annual running is 15-18k km, with the majority of highway usage (50-60%). Looking for insights on real-world mileage, maintenance, long-term cost of ownership, and highway drivability

Autocar India
Pick the Kia Seltos GTX diesel automatic with 15-18k km a year and lots of highway use, it will cost you less to run, and it feels stronger and more relaxed on the open road. The 6‑speed automatic is smooth and friendly in traffic, and on the highway, it settles into a calm, easy drive that suits long trips.
On mileage, the diesel will give you clearly better real-world numbers than the turbo petrol DCT, especially on the highway, think roughly 3-4 kpl more on long runs, and a bit more in the city too. Service for the diesel can be slightly costlier per visit than petrol, but even with that, total ownership cost usually works out lower for your usage. Resale for diesel automatics in this class is strong today, which also helps long-term cost.
One thing to be aware of: the diesel is a little noisier at idle than the turbo petrol, and like all new diesels, it has an exhaust filter that prefers some highway time now, and then your driving mix suits it well.
If you mainly want a quieter cabin in town and more outright performance, then the Seltos GTX turbo petrol DCT is the better choice. But expect higher fuel use and an automatic that can feel a bit jerky at very low speeds.
For your pattern, the diesel automatic fits best. On your test drive, do a steady 90-100 kph cruise and a few quick overtakes from 60-80 to feel how little effort the diesel needs. Then check if you are comfortable with the engine sound at idle.

Kia Seltos
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Posted on: 9 Apr 2026
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