Most Fuel-Efficient CNG SUVs in India (2026)

The Maruti Fronx is the most fuel-efficient CNG SUV on sale in India, certified at 28.51 km/kg, ahead of the Hyundai Exter at 27.1 km/kg and the Maruti Victoris at 27.02 km/kg. Across the eight factory CNG SUVs sold here, the spread is 4.51 km/kg, and almost all of that gap comes from one car at the bottom rather than from a steady decline.

A couple of km/kg does not sound like much on a spec sheet, but it adds up over a full tank and again over a year of running. This list ranks every factory-fitted CNG SUV in India strictly by certified mileage, using manufacturers' own published figures rather than owner-reported averages, which vary far more by driving style than the actual differences between these cars justify.

Key takeaways

• Maruti Fronx, 28.51 km/kg: the efficiency leader by a clear 1.41 km/kg, and the smallest engine here at 1.2 litres naturally aspirated.
• Six of the eight sit within 0.5 km/kg of each other. From the Exter at 27.1 down to the Grand Vitara and Hyryder at 26.6, mileage barely separates them.
• Tata Nexon, 24 km/kg: the only car below 26 km/kg, and the only turbocharged CNG SUV sold in India. The turbo costs it 2.6 km/kg against the next car up.
• Engine size predicts this better than price does. The two 1.2-litre cars lead, the 1.5-litre K15C cars bunch in the middle, and the turbo trails.
• Maruti Victoris, 27.02 km/kg: the most efficient of the 1.5-litre cars, and the only one using an underbody tank.

Every factory CNG SUV, ranked by certified mileage

Rank	Model (CNG trim)	Mileage	Engine on CNG	Price
1	Maruti Fronx (Delta CNG)	28.51 km/kg	77.5 PS, 98.5 Nm	₹8.74 lakh
2	Hyundai Exter (SX(O) CNG)	27.1 km/kg	68 PS, 95.2 Nm	₹9.40 lakh
3	Maruti Victoris (ZXi CNG)	27.02 km/kg	87.8 PS, 121.5 Nm	₹14.82 lakh
4	Tata Punch (Pure Plus CNG)	26.99 km/kg	72 PS, 103 Nm	₹8.10 lakh
5	Maruti Brezza (ZXi CNG)	26.90 km/kg	87.8 PS, 121.5 Nm	₹11.55 lakh
6	Maruti Grand Vitara (Zeta CNG)	26.6 km/kg	87.8 PS, 121.5 Nm	₹14.60 lakh
6	Toyota Hyryder (G CNG)	26.6 km/kg	87.8 PS, 121.5 Nm	about ₹15.72 lakh
8	Tata Nexon (Fearless+ CNG)	24 km/kg	100 PS, 170 Nm	₹13.72 lakh
Where these numbers come from. The Maruti and Toyota mileage and output figures are read off those manufacturers' own current brochures, and the Fronx and Victoris prices off the NEXA and Arena price pages. Toyota publishes no ex-showroom prices in India, so the Hyryder price is dealer-listed. Tata and Hyundai do not publish equivalent brochure specification tables, so the Punch, Nexon and Exter figures are the best available published numbers. No Maruti or Toyota brochure here prints a boot volume for a CNG variant, so CNG boot figures below are reported ones rather than official.

What actually drives the differences

Three things explain this table, and price is not one of them.

Engine displacement does most of the work. The two most efficient cars run 1.2-litre naturally aspirated engines, the four in the middle all run the same 1.5-litre K15C, and the least efficient runs a turbo. The 1.5-litre cars land within 0.42 km/kg of each other because they are, mechanically, the same engine on gas.

Forced induction costs efficiency on CNG. The Nexon is the only turbocharged CNG SUV sold in India and the only one under 26 km/kg. It gains 12 PS over the K15C cars and gives up 2.6 km/kg to the nearest of them.

Kerb weight sets the order within an engine family. The four K15C cars are separated by body size rather than tune. The Victoris leads them, the Brezza follows, and the two larger mid-size bodies, the Grand Vitara and the Hyryder, tie at the bottom of that group.

1. Maruti Fronx, 28.51 km/kg

Price: ₹8.74 lakh ex-showroom for the Delta CNG. The cheaper Sigma CNG is ₹7.94 lakh and returns the same figure.

The Fronx's 1.2-litre engine posts the highest certified CNG mileage of any SUV in India, and its margin over second place is larger than the gap between second and seventh. It is also among the cheapest cars here, so efficiency and price point the same way for once.

Engine on CNG: 77.5 PS at 6,000 rpm, 98.5 Nm at 4,300 rpm.

Features: 6 airbags standard with ESP and hill-hold, automatic climate control, rear parking sensors, 60:40 split-folding rear seat.

Boot space: the Fronx brochure prints 308 litres for both petrol engines and leaves the CNG column blank, so Maruti does not state the tank's cost in litres.

Gearbox: 5-speed manual.

2. Hyundai Exter, 27.1 km/kg

Price: about ₹9.40 lakh ex-showroom for the SX(O) CNG.

The Exter runs the smallest engine here and comes closest to the Fronx. Its dual-cylinder Hy-CNG layout uses two smaller tanks rather than one large one, which is what lets Hyundai keep an underbody spare wheel.

Engine on CNG: 68 PS at 6,000 rpm, 95.2 Nm at 4,000 rpm.

Features: touchscreen with wireless Android Auto and Apple CarPlay, 6 airbags standard, stability control and hill-start assist, underbody spare wheel retained.

Boot space: widely reported at 225 litres on the CNG variant against 391 litres on the petrol car. Hyundai does not publish this as a brochure specification.

Gearbox: 5-speed manual.

3. Maruti Victoris, 27.02 km/kg

Price: ₹14.82 lakh ex-showroom for the ZXi CNG. LXi CNG is ₹11.55 lakh and VXi CNG ₹12.90 lakh.

The Victoris is the most efficient of the four K15C cars despite being a mid-size SUV, and it is the only CNG car in India with its tank mounted under the body rather than inside the cargo area.

Engine on CNG: 87.8 PS at 5,500 rpm, 121.5 Nm at 4,200 rpm.

Features: 17.78 cm touchscreen with wireless smartphone mirroring, wireless charging, rear camera, tyre pressure monitoring, 6 airbags standard with ESP and hill-hold.

Safety: 5-star Bharat NCAP at 31.66 of 32 adult and 43 of 49 child occupant protection, plus a separate 5-star Global NCAP result for both. It is the only car on this list with a current 5-star result from both programmes.

Gearbox: 5-speed manual.

4. Tata Punch, 26.99 km/kg

Price: about ₹8.10 lakh ex-showroom for the Pure Plus CNG.

The Punch sits three-hundredths of a km/kg behind the Victoris, which is to say the two are identical in practice. It is also the only CNG SUV in India offered with an automatic gearbox, on its higher AMT trims.

Engine on CNG: 72 PS at 6,000 rpm, 103 Nm at 3,500 rpm.

Features: touchscreen with wireless Android Auto and Apple CarPlay, rear parking camera, cruise control, height-adjustable driver's seat, 6 airbags with stability control.

Boot space: reported at 210 litres on the CNG variant against 366 litres on the petrol car, the largest proportional loss on this list.

Gearbox: 5-speed manual on this trim, AMT higher in the CNG range.

5. Maruti Brezza, 26.90 km/kg

Price: ₹11.55 lakh ex-showroom for the ZXi CNG, the top of three CNG trims.

The Brezza gives up just 0.12 km/kg to the Victoris on the same engine, and it is the only car here whose CNG trim carries an electric sunroof.

Engine on CNG: 87.8 PS at 5,500 rpm, 121.5 Nm at 4,200 rpm.

Features: single-pane electric sunroof, 17.78 cm touchscreen with wireless smartphone mirroring, automatic climate control with rear AC vents, wireless charging, 6 airbags with stability control.

Boot space: reported at 328 litres on the CNG variant. Maruti's brochure prints no boot figure.

Gearbox: 6-speed manual, the only six-speed on this list.

The Brezza's 360 View Camera is a ZXi+ feature and CNG is not offered on ZXi+, so no Brezza CNG trim has one.

6. Maruti Grand Vitara and Toyota Hyryder, 26.6 km/kg

Price: about ₹14.60 lakh ex-showroom for the Grand Vitara Zeta CNG, and about ₹15.72 lakh for the Hyryder G CNG. Toyota publishes no ex-showroom prices in India, so the Hyryder figure is dealer-listed.

These two are the same car underneath, built on the same line and running the same engine to the same numbers, so they tie exactly. They are also the largest bodies here, which is most of why they sit at the bottom of the K15C group.

Engine on CNG: 87.8 PS at 5,500 rpm, 121.5 Nm at 4,200 rpm.

Grand Vitara features: 22.86 cm touchscreen, wireless charging, automatic climate control with rear AC vents, cruise control, 6 airbags with stability control. No ADAS is offered on any Grand Vitara trim.

Hyryder features: 22.86 cm touchscreen, panoramic sunroof, wireless charging, ventilated front seats, automatic climate control, cruise control, 6 airbags with ABS, EBD and stability control. The G grade is the better equipped of Toyota's two CNG trims.

Gearbox: 5-speed manual on both.

7. Tata Nexon, 24 km/kg

Price: about ₹13.72 lakh ex-showroom for the Fearless+ CNG.

The Nexon is the only turbocharged CNG SUV in India, which puts it 12 PS clear of everything else here and 2.6 km/kg behind the next car up the table. That is a deliberate trade rather than a weakness, but it makes the Nexon the one genuine efficiency outlier on this list.

Engine on CNG: 100 PS and 170 Nm from the 1.2-litre three-cylinder turbo-petrol, with a twin-cylinder tank rated at 60 litres or 9 kg.

Features: twin-cylinder tank, 10.25-inch touchscreen with wireless smartphone mirroring, 360-degree camera, automatic climate control, 6 airbags with stability control.

Boot space: reported at 321 litres on the CNG variant against 382 litres on the petrol car.

Gearbox: 6-speed manual.

Conclusion

The spread here is narrower than it looks. Strip out the Nexon and the remaining seven CNG SUVs sit inside 1.91 km/kg of each other, and six of them inside 0.5 km/kg. At that point mileage stops being a useful way to choose, because the difference between third place and sixth is smaller than the difference between two drivers.

What actually separates these cars is everything else: whether the tank eats the boot, whether a 360-degree camera or a sunroof is even offered on the gas trim, and whether the car has been crash tested recently. Those vary far more than fuel efficiency does, and past the top of this table they are the better tiebreakers.

FAQs

Which is the most fuel-efficient CNG SUV in India?

The Maruti Fronx, at 28.51 km/kg, in either of its two CNG trims.

How much does CNG mileage actually vary between these SUVs?

Excluding the turbocharged Nexon, 1.91 km/kg separates the best from the worst, and the middle six are within half a km/kg of each other.

Why is the Tata Nexon so much less efficient?

It is the only turbocharged CNG SUV sold in India. The turbo gives it 100 PS against 87.8 PS for the 1.5-litre Marutis, and costs it 2.6 km/kg against the next car up the table.

Do any of these offer an automatic gearbox on CNG?

Only the Tata Punch, on its higher AMT trims. Every other car here is manual-only on CNG.

Do the Grand Vitara and Hyryder really return exactly the same figure?

Yes. They are the same vehicle built on the same line with the same engine and gearbox, so both are certified at 26.6 km/kg.