Compact SUVs With the Lowest Running Cost Per Km in India (2026)

The Maruti Suzuki Fronx CNG is the cheapest compact SUV to run in India, at roughly ₹2.98 per km on its ARAI-certified 28.51 km/kg. The Brezza CNG is next at about ₹3.16 per km on 26.90 km/kg, and the cheapest diesel in this set is the Kia Sonet at roughly ₹3.73 per km. The Hyundai Venue diesel closes the list at about ₹4.29 per km, which works out to around 44% more per kilometre than the Fronx.

Rank	Model	Fuel type	ARAI mileage	Estimated running cost/km
1	Maruti Suzuki Fronx	CNG	28.51 km/kg	₹2.98
2	Maruti Suzuki Brezza	CNG	26.90 km/kg	₹3.16
3	Kia Sonet	Diesel	24.1 kmpl (unverified)	₹3.73
4	Tata Nexon	Diesel	24.08 kmpl (unverified)	₹3.74
5	Mahindra XUV 3XO	Diesel	21.2 kmpl (unverified)	₹4.25
6	Hyundai Venue	Diesel	approx. 20.99 kmpl	₹4.29

Maruti Suzuki figures are the ARAI-certified numbers printed in each model's own brochure. Kia and Tata block automated access to their specification pages, Hyundai does not print ARAI mileage in its brochures at all, and Mahindra's figure could not be confirmed against a published brochure here, so those four numbers are our own and are worth confirming with a dealer before you buy on the strength of them.

A compact SUV's sticker price rarely tells you what it actually costs to own. Two SUVs priced within a lakh of each other can end up with very different running costs once fuel type and engine size enter the picture, and that gap adds up fast over years of daily use, particularly for anyone covering long distances or using the car for work.

Most buyers shopping this segment focus on features, ground clearance, and styling first, treating running cost as something to check later. That approach misses a real cost difference. Two compact SUVs that look similar on paper, similarly priced and similarly sized, can end up costing thousands of rupees apart every year once fuel type and engine size are actually factored in.

This list ranks compact SUVs in India by estimated running cost per kilometer, using the best mileage figure available for each model (the ARAI-certified brochure number where the manufacturer publishes one), so the order reflects what these SUVs actually cost to drive rather than their price tags or market positioning. For a look at how Maruti's own Brezza stacks up in the wider compact 4x4 segment, or how compact SUVs compare against smaller hatchbacks on running cost, those breakdowns are worth a look too.

Key takeaways

• Lowest running cost overall: The Maruti Suzuki Fronx CNG comes out cheapest at roughly ₹2.98 per km. Its smaller 1197cc engine and lighter body are the main reasons it leads.
• CNG beats diesel across this list: Both Maruti CNG entries undercut every diesel competitor here by 15% or more. That holds even though diesel is usually seen as the efficient choice in this segment.
• Real competitors do make this list, just further down: Kia Sonet, Tata Nexon, Mahindra XUV 3XO, and Hyundai Venue all appear here on their diesel variants, trailing the Maruti CNG entries by a real but not extreme margin.

How is running cost ranking calculated

Running cost per km is calculated as fuel price divided by ARAI-certified mileage, the standardized government test manufacturers certify against, using ₹85 per kg for CNG and ₹90 per litre for diesel, though not all of them print the resulting figure in their own brochures. Only factory-fitted powertrains are included; retrofit CNG kits, offered by a couple of rivals in this segment, are left out since their mileage figures are not officially certified or published by the kit manufacturers.

Compact SUVs with the lowest running cost per km

1. Maruti Suzuki Fronx

Price: ₹7.89 lakh (Sigma CNG) to ₹8.74 lakh (Delta CNG) ex-showroom.

The Fronx CNG posts the lowest running cost of any compact SUV in India, helped by a smaller 1.2-litre engine that trades some outright power for meaningfully better CNG mileage than most rivals in this segment.

Engine: 1197cc K-Series petrol, producing 77.5 PS and 98.5 Nm in CNG mode.

Mileage: 28.51 km/kg, ARAI certified.

Boot space: 308 litres on the petrol variant; the CNG-specific figure is not separately published in the brochure.

Transmission: 5-speed manual only on CNG.

Estimated running cost: ₹2.98 per km.

Warranty: 3 years or 1,00,000 km, consistent with Maruti's standard terms seen across its other models, though not independently confirmed from the Fronx brochure itself.

2. Maruti Suzuki Brezza

Price: ₹9.35 lakh (LXi CNG MT) to ₹11.71 lakh (ZXi CNG MT) ex-showroom, per Maruti's official Brezza page.

The Brezza CNG trails the Fronx slightly on running cost, a result of its larger 1.5-litre engine, but it stays well ahead of every diesel competitor in this segment.

Engine: 1462cc K15C petrol, producing 87.8 PS and 121.5 Nm in CNG mode.

Mileage: 26.90 km/kg, ARAI certified.

Boot space: Not specified in Maruti's technical specification sheet for the Brezza, for any fuel type or variant.

Transmission: 6-speed manual only on CNG; the turbo-petrol and automatic variants are not offered with CNG.

Estimated running cost: ₹3.16 per km.

Warranty: 3 years or 1,00,000 km, extendable up to 6 years.

3. Kia Sonet

Price: ₹9.80 lakh to ₹15.75 lakh ex-showroom across diesel variants.

The Sonet's diesel engine posts the best mileage of any non-Maruti compact SUV on this list, making it the strongest pick for buyers who specifically want a diesel over CNG.

Engine: 1.5-litre CRDi diesel, producing around 114 bhp and 250 Nm.

Mileage: Up to 24.1 kmpl on the manual transmission. Kia blocks automated access to its specification pages, so we could not confirm this against Kia's own published material; treat it as an estimate.

Boot space: 385 litres.

Transmission: 6-speed manual or torque converter automatic.

Estimated running cost: ₹3.73 per km.

Warranty: 3 years, unlimited km.

4. Tata Nexon

Price: From roughly ₹10.00 lakh ex-showroom for diesel variants, per Tata Motors' own site.

The Nexon comes within a fraction of the Sonet's running cost, and it is the only SUV on this list besides the two Marutis to also offer a factory CNG option, though its CNG mileage trails the Fronx and Brezza by a wide margin.

Engine: 1.5-litre Revotorq diesel, producing around 113 bhp and 260 Nm.

Mileage: Up to 24.08 kmpl on the manual transmission. Tata blocks automated access to its specification pages, so this figure is unverified here and worth checking with a dealer.

Boot space: 382 litres.

Transmission: 6-speed manual or AMT.

Estimated running cost: ₹3.74 per km.

Warranty: 3 years or 1,00,000 km.

Safety: 5-star Global NCAP rating.

5. Mahindra XUV 3XO

Price: ₹9.2 lakh to ₹13.9 lakh ex-showroom across diesel variants.

The XUV 3XO trails the Sonet and Nexon on running cost, though it remains a reasonable pick for buyers who put safety and feature content ahead of pure fuel economy.

Engine: 1.5-litre diesel, producing around 116 bhp and 300 Nm.

Mileage: Up to 21.2 kmpl, not confirmed against a published Mahindra brochure here.

Boot space: Not independently confirmed here.

Transmission: 6-speed manual or automatic.

Estimated running cost: ₹4.25 per km.

Warranty: Standard Mahindra warranty terms apply.

6. Hyundai Venue

Price: ₹10.7 lakh to ₹13.5 lakh ex-showroom across diesel variants.

The Venue closes out this list with the highest running cost, though it is a reasonable option for buyers who prioritize Hyundai's dealer network and cabin refinement over the last few paise per kilometer.

Engine: 1.5-litre CRDi diesel, producing around 113 bhp and 250 Nm.

Mileage: Approximately 20.99 kmpl. Hyundai does not print ARAI mileage figures in its brochures, so every Hyundai number here is an approximation rather than a certified figure.

Boot space: Approximately 350 litres.

Transmission: 6-speed manual or automatic.

Estimated running cost: ₹4.29 per km.

Warranty: Standard Hyundai warranty terms apply.

Conclusion

For the lowest possible running cost in a compact SUV, CNG beats diesel outright, and the Fronx leads on running cost, though only narrowly over the Brezza. Buyers who want more interior space without straying far on running cost should look at the Brezza, which trails the Fronx by only a small amount while offering a larger cabin.

Anyone set on a diesel, whether for highway driving character or brand preference, still has genuine options in the Sonet, Nexon, XUV 3XO, and Venue. Each stays within a reasonable band of running cost, even though none beats the two CNG Marutis outright.

For a broader look at where these models sit against dedicated off-roaders, see our off-road SUV running cost comparison, or check our automatic cars under ₹15 lakh if the automatic transmission on the Sonet or Venue is a deciding factor.

FAQs

Which compact SUV in India has the lowest running cost?

The Maruti Suzuki Fronx has the lowest estimated running cost on this list, at roughly ₹2.98 per km on its CNG variant, which returns an ARAI-certified 28.51 km/kg.

Does the Maruti Suzuki Brezza offer CNG on all its variants?

No. CNG is available only on the LXi, VXi, and ZXi trims with the 1462cc engine and manual transmission. The turbo-petrol and automatic variants do not offer a CNG option.

Is diesel still cheaper to run than petrol in this segment?

Yes, among the non-CNG options on this list, diesel variants consistently beat their petrol counterparts on running cost, though none beat the two Maruti CNG entries.

Which non-Maruti compact SUV has the best running cost?

The Kia Sonet posts the lowest running cost among non-Maruti options on this list, at roughly ₹3.73 per km on its diesel variant. That rests on an unverified 24.1 kmpl, since Kia blocks automated access to its specification pages.

Does the Tata Nexon offer CNG like the Maruti models on this list?

Yes. The Nexon is the only non-Maruti SUV on this list with a factory CNG option, though its CNG mileage trails both the Fronx and Brezza by a wide margin, which is why its diesel variant appears on this list instead.