Kia has a knack for making SUVs that feel a class above their price, and the Syros and the Seltos are two good examples. The Syros is the boxy, futuristic-looking compact SUV that squeezes a surprising amount of cabin space into a short footprint. The Seltos, meanwhile, is the well-established midsize favourite that many families have trusted for years. The Seltos has entered a new chapter in 2026. Kia launched the second-generation model in January, built on a new platform with a larger body and a refreshed line-up of engines. The Syros, on sale since early 2025, sits just below it in Kia’s range and is often cross-shopped by buyers who aren’t sure whether they really need the bigger SUV. You might expect the smaller Syros to be the easy winner on fuel economy, but the real-world numbers tell a rather different story. In this comparison, we’ll look at what each SUV claims on paper, what they actually managed in testing, how that affects your monthly budget and how their prices compare.
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Kia Syros vs Kia Seltos: Specifications
The one engine these two have in common is Kia’s 1.5-litre diesel, which makes 116 PS and 250 Nm in both and comes with a manual or a 6-speed automatic. On the petrol side, they go their separate ways. The Syros uses a compact 1.0-litre turbo-petrol, while the Seltos offers a choice of a 1.5-litre naturally aspirated petrol or a much stronger 1.5-litre turbo-petrol.
| Specification | Kia Syros | Kia Seltos |
| Turbo-petrol | 1.0L, 120 PS / 172 Nm | 1.5L, 160 PS / 253 Nm |
| Naturally aspirated petrol | Not offered | 1.5L, 115 PS / 144 Nm |
| 1.5L diesel | 116 PS / 250 Nm | 116 PS / 250 Nm |
| Petrol gearboxes | 6-speed MT or 7-speed DCT | 6-speed MT, IVT or 7-speed DCT |
| Diesel gearboxes | 6-speed MT or 6-speed AT | 6-speed MT or 6-speed AT |
It’s worth noting that the Syros is surprisingly heavy for a compact SUV, weighing roughly 85 to 95 kg more than its Sonet sibling. That extra weight, combined with its tall, boxy shape, has a noticeable effect on how far it can go on a litre.
Also Read: Kia Syros Buying Guide: Price, Features, Variants
Kia Syros vs Kia Seltos: ARAI Mileage Figures
The Syros does look like the thriftier option, especially with its diesel manual, which is rated at a healthy 20.75 km/l. Its petrol versions are claimed at 18.2 km/l with the manual and 17.68 km/l with the DCT.
For the new Seltos, the figures commonly listed range from about 15.6 km/l to 19.4 km/l across the line-up, with the petrol IVT reported at around 16.5 km/l and the turbo-petrol DCT at roughly 17.5 km/l.
| Variant | Syros | Seltos |
| Turbo-petrol MT | 18.2 km/l | – |
| Turbo-petrol DCT | 17.68 km/l | About 17.5 km/l |
| 1.5 petrol IVT | Not offered | About 16.5 km/l |
| Diesel MT | 20.75 km/l | Up to about 19.4 km/l (range across diesel versions) |
| Diesel AT | 17.65 km/l | – |
As neat as these numbers look, they don’t always hold up once the AC is running and traffic starts to build, that’s especially true for the Syros.
Kia Syros vs Kia Seltos: Real World Fuel Efficiency
This is where the comparison takes an unexpected turn. Put through the same set of real-world tests, the bigger Seltos turned out to be the more frugal of the two in most cases.
The Seltos 1.5 turbo-petrol DCT, despite its extra power, returned about 9.27 km/l in the city and 14.76 km/l on the highway. The Syros turbo-petrol DCT managed roughly 8.3 km/l and 11.5 km/l, and even the Syros manual, at about 9.1 km/l and 12.6 km/l, couldn’t quite match it. The Seltos’s regular 1.5 petrol with the IVT gearbox did even better, with around 10.31 km/l in town and 14.22 km/l on the highway.
| Version | City | Highway | 50:50 mixed |
| Syros 1.0 turbo-petrol MT | 9.10 km/l | 12.60 km/l | 10.57 km/l |
| Syros 1.0 turbo-petrol DCT | 8.30 km/l | 11.50 km/l | 9.64 km/l |
| Syros 1.5 diesel AT | 10.80 km/l | 13.60 km/l | 12.04 km/l |
| Seltos 1.5 turbo-petrol DCT | 9.27 km/l | 14.76 km/l | 11.39 km/l |
| Seltos 1.5 petrol IVT | 10.31 km/l | 14.22 km/l | 11.95 km/l |
So why does the smaller SUV fall behind? A big part of it is the Syros’s weight and upright, boxy shape, which push against more air at highway speeds. Its small turbo engine has to work fairly hard to move all that mass, and that shows at the pump.
The Syros diesel automatic is the most economical version of the compact SUV, at around 10.8 km/l in the city and 13.6 km/l on the highway. We don’t yet have comparable figures for the new Seltos diesel, but with the same engine in a larger body, it should land in a broadly similar range.
Also Read: Kia Seltos Real World Mileage
Kia Syros vs Kia Seltos: Fuel Cost Comparison
Let’s bring these numbers down to everyday money. Assuming you cover 1,000 km each month with an even mix of city and highway driving, that’s 12,000 km a year. We’ve used ₹100 a litre for petrol and ₹90 a litre for diesel as simple reference prices, so do adjust them to your local rates.
| Version | Mixed mileage | Cost per km | Monthly (1,000 km) | Yearly (12,000 km) |
| Syros turbo-petrol MT | 10.57 km/l | ₹9.46 | ₹9,463 | ₹1,13,554 |
| Syros turbo-petrol DCT | 9.64 km/l | ₹10.37 | ₹10,372 | ₹1,24,463 |
| Syros diesel AT | 12.04 km/l | ₹7.48 | ₹7,475 | ₹89,706 |
| Seltos turbo-petrol DCT | 11.39 km/l | ₹8.78 | ₹8,781 | ₹1,05,374 |
| Seltos petrol IVT | 11.95 km/l | ₹8.37 | ₹8,366 | ₹1,00,391 |
If you’re comparing petrol automatics, the Seltos turbo DCT works out around ₹1,600 cheaper every month than the Syros DCT, which comes to nearly ₹19,000 over a year. That’s quite a surprise for the bigger, more powerful SUV.
The Syros does have a strong card to play, though. Its diesel automatic is the cheapest option in this comparison to run, so if you’ve set your heart on the Syros and drive a fair amount, the diesel is the version that makes the most financial sense.
Kia Syros vs Kia Seltos: Price Comparison
The Syros is the gentler step into the Kia SUV family, priced from about ₹8.42 lakh to ₹15.82 lakh. The new Seltos starts at roughly ₹11 lakh and climbs to about ₹21.82 lakh for its top versions (all prices ex-showroom).
| Car | Approx. ex-showroom price |
| Kia Syros | ₹8.42 lakh to ₹15.82 lakh |
| Kia Seltos | ₹11.00 lakh to ₹21.82 lakh |
There’s a fair bit of overlap in the middle, and that’s where this decision gets interesting. A mid-spec Seltos costs roughly the same as a well-equipped Syros, and as the tests above show, it may not cost you any more to run, especially with a petrol automatic. The Syros, on the other hand, makes the most sense if you’d like a compact, easy-to-park SUV with a roomy cabin at a lower starting price, or if you’re happy to go for its diesel.
Buying used? The first-generation Seltos was on sale from 2019 until the new model arrived, so there’s a wide choice of pre-owned examples on Spinny across petrol, turbo-petrol and diesel versions. For reference, the older 1.4 turbo DCT returned about 8.5 km/l in the city and 14.1 km/l on the highway in testing, so its running costs aren’t far off the new model. The Syros is newer, having arrived in early 2025, but lightly used examples are now starting to appear. Whichever you shortlist on Spinny, take time to go through the inspection report and service history, and on a DCT, make sure the gearbox shifts cleanly in slow traffic during your test drive. Every Spinny Assured car comes with a 200-point inspection, a 1-year warranty, fixed pricing and a 5-day money-back guarantee.
Summary
It’s natural to assume that a smaller SUV will always be the more economical one, but the Syros and the Seltos turn that idea on its head. With petrol, the new Seltos proved noticeably more efficient in real-world testing, helped by its more refined engines and a shape that’s kinder at highway speeds. The Syros, weighed down by its boxy design and extra kerb weight, simply can’t stretch a litre as far. That doesn’t make the Syros a poor choice. Its diesel automatic is genuinely economical, it costs less to buy, and its spacious, tech-rich cabin is a big part of its charm. But if you’re torn between the two and leaning towards a petrol automatic, it’s worth taking a closer look at the Seltos, since the larger SUV may end up costing you less at the pump.
Related Blogs:
Kia Syros vs Kia Sonet Real World Mileage Comparison
Kia Syros vs Tata Nexon Real World Mileage Comparison
Kia Seltos vs Toyota Hyryder Real-World Mileage Comparison
Kia Seltos Mileage Comparison: Petrol vs Diesel vs Turbo Petrol
FAQs about Syros and Seltos Mileage Comparison
Q. Why does the Syros fall so far short of its claimed mileage?
It comes down mostly to its weight and shape. The Syros is heavier than you’d expect for its size, and its tall, upright body faces quite a bit of wind resistance at speed. In testing, the diesel automatic’s real-world average came in more than 5 km/l below its claimed figure, which is a wider gap than many of its rivals.
Q. Is the new-generation Seltos more efficient than the older model?
Slightly, and that’s impressive given that it’s bigger and better equipped. The new 1.5 turbo-petrol DCT returned about 9.27 km/l in the city and 14.76 km/l on the highway, a small improvement over the older 1.4 turbo DCT, which managed roughly 8.5 km/l and 14.1 km/l.
Q. Should I choose the Syros manual or the DCT if mileage matters?
The manual has a small but steady edge. In real-world testing, it was close to 1 km/l more frugal than the DCT in both the city and on the highway. If you don’t mind working a clutch, it’s the better pick for keeping fuel costs down, and it’s also a little easier on your wallet at the showroom.
Q. Which Seltos petrol suits daily city commutes better?
The 1.5 naturally aspirated petrol with the IVT gearbox looks like the sweeter choice for town. It returned about 10.31 km/l in city testing, a full kilometre better than the turbo DCT, and its smooth, gearless feel makes stop-and-go traffic far more relaxing.
Q. Does driving in Eco mode make a real difference in the Seltos?
The Seltos offers Eco, Normal and Sport modes, and its real-world tests were carried out entirely in Eco. Using it for everyday driving softens the throttle response and encourages smoother progress, both of which can help you get closer to the tested figures.
Q. I drive mostly on highways. Is a Syros diesel a better bet than a Seltos petrol?
For running costs, the Syros diesel still has the advantage, working out roughly ₹900 cheaper each month than the Seltos petrol IVT in our estimates. That said, the Seltos petrol is quite comfortable on long drives too, so if you prefer petrol’s smoothness and quieter cabin, the difference isn’t so large that it should be a deal-breaker.
