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Kia Sonet vs Mahindra XUV 3XO (2026)

Kia Sonet (₹7.45 Lakh – ₹14.36 Lakh) and Mahindra XUV 3XO (₹7.79 Lakh – ₹15.04 Lakh) go head-to-head in the compact suv space. Here is how they compare on the numbers (October 2026).

  • The Kia Sonet is more affordable — it starts ₹0.34 Lakh lower than the Mahindra XUV 3XO.
  • The Mahindra XUV 3XO is the more powerful car, with 129 bhp against 118 bhp.
  • The Kia Sonet is more efficient on paper — up to 24.1 kmpl vs 20.6 kmpl.
  • Only the Mahindra XUV 3XO has a published NCAP crash-test rating (5 stars).
  • The Kia Sonet has the bigger boot: 385 litres vs 364 litres.

Specification Comparison

SpecKia SonetMahindra XUV 3XO
Ex-showroom price₹7.45 Lakh – ₹14.36 Lakh₹7.79 Lakh – ₹15.04 Lakh
Engine / Motor1.2L NA petrol / 1.0L turbo-petrol / 1.5L diesel1.2L turbo-petrol (mStallion/TGDi) / 1.5L diesel
Max power118 bhp129 bhp
Fuel optionsPetrol, DieselPetrol, Diesel
TransmissionsManual, iMT, DCT, Torque Converter AT, AMTManual, AMT, Torque Converter AT
Mileage (claimed)18.2-24.1 km/l (ARAI, varies by engine and gearbox)17.9-20.6 kmpl (claimed, engine dependent)
Seating55
Safety ratingNot tested5 stars
Airbags (max)66
Boot space385 L364 L

Shortlisting a third car? See the full three-way comparison →

Kia Sonet in short

The Kia Sonet is one of the most feature-loaded sub-4-metre SUVs on sale, and its 2024 facelift sharpened the styling while making six airbags standard across the range. It remains the only car in its class to offer a diesel-automatic combination, giving it a unique selling point against the Tata Nexon, Maruti Brezza, Hyundai Venue and Mahindra XUV 3XO. The wide engine-gearbox matrix and segment-first features like ventilated seats and a 360-degree camera keep it a strong all-rounder.

Full Sonet prices & variants →

Mahindra XUV 3XO in short

The XUV 3XO is Mahindra's comprehensively reworked sub-4m SUV, replacing the XUV300 with sharper styling, a segment-first panoramic sunroof and Level 2 ADAS on top trims. Its 129 bhp TGDi turbo-petrol is among the punchiest in the class, and it holds a full 5-star Bharat NCAP rating. It battles the Tata Nexon, Maruti Brezza, Hyundai Venue and Kia Sonet.

Full XUV 3XO prices & variants →

Frequently Asked Questions

Which is cheaper: Sonet or XUV 3XO?

The Kia Sonet is more affordable — it starts ₹0.34 Lakh lower than the Mahindra XUV 3XO. (Ex-showroom prices, October 2026.)

Sonet vs XUV 3XO — which is safer?

NCAP ratings: Kia Sonet — not yet tested; Mahindra XUV 3XO — 5 stars.

Should I buy the Sonet or the XUV 3XO?

The Kia Sonet is more affordable — it starts ₹0.34 Lakh lower than the Mahindra XUV 3XO. The Mahindra XUV 3XO is the more powerful car, with 129 bhp against 118 bhp. The Kia Sonet is more efficient on paper — up to 24.1 kmpl vs 20.6 kmpl. Beyond the numbers, shortlist by test-driving both — ride quality and dealer experience differ by city.