Which New CNG Cars Are Coming to India in 2026? Kia, Hyundai and Tata Models Compared

India's CNG passenger vehicle segment is defined as the category of factory-fitted or OEM-approved compressed natural gas cars sold through authorised dealerships, and it accounted for 22 percent of all passenger vehicle sales in FY2026 — making CNG the second most popular fuel after petrol, surpassing diesel for the first time. Every major carmaker has accelerated CNG plans as a result, and 2026 marks the year the segment stops being a Maruti Suzuki monopoly.

Below is a snapshot of every confirmed and expected CNG model arriving in India through 2027, alongside the Maruti S-CNG cars they will compete with directly.

Model	Segment	CNG Kit Type	Claimed Mileage (km/kg)	Starting Price (CNG, ex-showroom)	Boot Space (CNG)	Key Weakness
Kia Carens Clavis CNG	MPV / 3-row	Factory-fitted	22–25 (estimated)	TBA (expected Oct 2026)	116 litres	Steep boot-space loss (vs 216 L petrol); lower trims only
Kia Carens CNG	MPV / 3-row	Factory-fitted	22–25 (estimated)	TBA (expected Oct 2026)	116 litres	Single Premium trim; 22 hp power drop on CNG
Maruti XL6 S-CNG	MPV / 3-row	Factory-fitted	26.3 (ARAI claim)	~₹14.0 lakh	~180 litres	No 7-seat layout; 6-seat only; no automatic with CNG
Hyundai Exter Facelift CNG	Micro-SUV	Factory-fitted (Hy-CNG Duo)	26–27 (expected)	₹7.00–9.50 lakh (expected)	Dual-cylinder preserves space	Expected Q3–Q4 2026; specs not finalised
Maruti Baleno S-CNG	Hatchback	Factory-fitted	30.61 (ARAI claim)	~₹8.30 lakh (facelift expected Sept 2026)	Reduced vs petrol	No automatic with CNG; 1.2L NA only
Maruti Fronx S-CNG	Compact SUV	Factory-fitted	28.51 (ARAI claim)	~₹9.50 lakh	Reduced vs petrol	No turbo-petrol with CNG; lower trims only
Maruti Grand Vitara S-CNG	Mid-size SUV	Factory-fitted	26.6 (ARAI claim)	~₹13.50 lakh	Reduced vs petrol	No AWD with CNG; mid-spec trims only
Tata Curvv iCNG	Coupe SUV	Factory-fitted (expected)	TBA	₹11.00–13.50 lakh (expected)	TBA	Under evaluation; no launch date
Nissan Gravite CNG	7-seat SUV	Factory-fitted (expected)	23–25 (expected)	₹6.50–9.50 lakh (expected)	625 L (dual-tank floor setup)	Specs not finalised; Q3 2026 expected
Tata Altroz iCNG	Hatchback	Factory-fitted	26.2 (ARAI claim)	₹7.30 lakh (Smart CNG)	Dual-cylinder preserves space	Slightly lower mileage than Baleno CNG
Renault Bridger CNG	Compact SUV	Factory-fitted (planned)	TBA	₹7–11 lakh (estimated)	TBA	Expected late 2027; very early stage

What exactly is Kia's CNG plan for India, and when will prices be announced?

Kia's entry into India's factory-fitted CNG segment rests on two models launching simultaneously: the Carens and the Carens Clavis, both powered by a 1.5-litre naturally aspirated four-cylinder engine paired with a 60-litre CNG tank positioned under the boot floor. Specifications were officially announced in September 2026 on the sidelines of the Kia Sorento launch, with prices expected by end-September or early October 2026.

In CNG mode, the engine produces 93 hp and 123 Nm — that is 22 hp and 21 Nm less than the equivalent petrol variant, a drop typical for factory-fitted CNG conversions but worth noting for buyers who regularly carry full loads. Kia has recalibrated the engine to minimise the performance compromise, and the suspension has been retuned while front disc brakes have been upgraded to handle the additional weight of the CNG tank.

The boot space trade-off is significant. At 116 litres, the CNG versions of both MPVs lose 100 litres compared to the 216-litre petrol boot. For a 6- or 7-seat family MPV, that is a real constraint — grocery runs and airport trips with luggage become planning exercises. Kia retained the underbody spare wheel, a practical decision, but the boot figure remains the single biggest reason a buyer might look at the Maruti XL6 S-CNG instead, which manages around 180 litres of usable boot space despite its own CNG cylinder.

On the Carens Clavis, the CNG kit is available on the HTE and HTE (O) trims; on the older Carens, it is offered on the sole Premium trim. Both get 16-inch wheels in CNG spec. This trim restriction is a deliberate cost-management move, but it means buyers wanting higher-spec features will have to stick with petrol.

Fuel efficiency is estimated at 22–25 km/kg — Kia has not released an ARAI-certified figure yet. At Delhi CNG prices of approximately ₹76 per kg (as of mid-2026), 22 km/kg translates to a running cost of roughly ₹3.45 per km, compared to approximately ₹8.50 per km on petrol at ₹96 per litre and 11 km/l. That is a saving of around ₹5 per km, or ₹150 per day for a 30-km daily commuter — meaningful over a 5-year ownership cycle.

The older Carens was previously available with a CNG kit, but only as a dealer fitment, which carried warranty implications. The new factory-fitted kits on both models resolve that concern entirely.

How does the Maruti XL6 S-CNG compare to the Kia Carens CNG for MPV buyers?

The Maruti XL6 S-CNG is the established benchmark in the 6-seat MPV CNG space. Its 1.5-litre K-series engine with factory-fitted CNG delivers an ARAI-claimed 26.3 km/kg — comfortably ahead of the Kia Carens CNG's estimated 22–25 km/kg range. At ₹76/kg in Delhi, 26.3 km/kg works out to ₹2.89 per km, versus the Kia's best-case ₹3.04 per km. Over 50,000 km, that gap adds up to roughly ₹7,500–₹12,000 in fuel savings in the Maruti's favour.

The XL6's weaknesses are real, though. It is a 6-seater only — no 7-seat option — and CNG is not available with an automatic gearbox. The Kia Carens Clavis, even in its lower CNG trims, brings a more premium cabin feel, better connectivity features, and a more modern platform. If the Kia's CNG prices land below ₹14 lakh, it will represent genuine value against the XL6.

For buyers who want the lowest running costs in the MPV segment and are comfortable with Maruti's service network density, the XL6 S-CNG remains the safer choice today. For buyers who want a more feature-rich cabin and are willing to wait a few weeks for Kia's pricing, the Carens Clavis CNG is worth holding out for. Our detailed MPV comparison is available at Best MPVs with a CNG Option in India.

What is the Hyundai Exter Facelift CNG, and why does its dual-cylinder setup matter?

The Hyundai Exter Facelift CNG is a micro-SUV with Hyundai's proprietary Hy-CNG Duo twin-cylinder technology, which splits the CNG storage across two smaller cylinders placed under the floor rather than a single large cylinder in the boot. Tata Motors uses the same approach on its iCNG range (Nexon iCNG, Altroz iCNG, Punch iCNG), and it is a meaningful differentiator against single-cylinder setups like those in the Maruti S-CNG range.

The practical benefit is boot space preservation. A single-cylinder setup typically eats 60–100 litres of boot volume; a twin-cylinder floor-mounted setup recovers most of that space for the buyer. The Hyundai Exter Facelift CNG is expected to deliver 26–27 km/kg in CNG mode, with 69 PS and 95 Nm — modest figures, but appropriate for a city-focused micro-SUV.

The facelift brings updated exterior styling including new H-shaped LED DRLs, a revised front bumper, and diamond-cut alloys. The expected price range of ₹7–9.50 lakh puts it in direct competition with the Maruti Fronx S-CNG (starting around ₹9.50 lakh) and the Tata Punch iCNG. The Fronx has a higher claimed mileage of 28.51 km/kg (ARAI) but uses a single-cylinder setup that reduces boot space. The Exter's dual-cylinder advantage is real for buyers who need everyday practicality.

Hyundai has also indicated plans to expand its CNG portfolio from three models to six by 2030, suggesting the Exter facelift is the beginning of a broader push rather than a one-off addition.

Is the Tata Curvv iCNG confirmed, and what would make it significant?

The Tata Curvv iCNG is currently under evaluation — no launch date has been announced, and Tata has not confirmed specifications. The expected price range of ₹11–13.50 lakh is an industry estimate, not an official figure.

What would make it significant is the body style: the Curvv is a coupe-SUV, a segment that has never had a factory-fitted CNG option in India. If Tata proceeds, it would pair its twin-cylinder iCNG technology (which preserves boot space) with a 1.2-litre turbocharged petrol engine — though whether the turbo engine gets CNG capability or a separate NA engine is used has not been confirmed. Tata's existing iCNG cars (Nexon, Altroz, Punch, Tiago, Tigor) all use the twin-cylinder setup, so the Curvv would likely follow the same architecture.

The Curvv iCNG would compete with the Maruti Grand Vitara S-CNG (ARAI claim: 26.6 km/kg, starting around ₹13.50 lakh) in the premium compact/mid-size SUV CNG space. The Grand Vitara's weakness is that CNG is not available with AWD or the strong-hybrid powertrain — buyers get the mild-hybrid 1.5-litre petrol with CNG. The Curvv, if it launches, would likely offer a more modern platform and coupe styling at a similar price point.

Until Tata makes an official announcement, buyers should treat the Curvv iCNG as a possibility for late 2026 or 2027, not a confirmed product.

What is the Nissan Gravite CNG, and does it really offer 7 seats with CNG?

The Nissan Gravite CNG is expected to be India's first 7-seat factory-fitted CNG SUV in the sub-₹10 lakh segment — a claim that, if delivered, would be genuinely unique. Built on the CMF-A+ platform shared with the Renault Triber, the Gravite uses a modular third-row seat design and a dual-tank CNG setup positioned under the floor, preserving up to 625 litres of boot space when the third row is folded.

Expected specifications include a 1.0-litre engine producing approximately 90–110 PS in CNG mode, a 5-speed AMT transmission, and a claimed mileage of 23–25 km/kg. The expected price range of ₹6.50–9.50 lakh would make it the most affordable 7-seat CNG option in India.

The caveats are significant: none of these specifications are confirmed by Nissan, and the expected Q3 2026 launch timeline has not been officially announced. The Gravite itself is a new nameplate, and CNG-specific details may shift before launch. Buyers interested in 7-seat CNG options should also look at the Maruti Ertiga S-CNG (ARAI claim: 26.11 km/kg) and the XL6 S-CNG as proven alternatives while waiting for the Gravite to materialise.

Where does the Maruti Baleno S-CNG stand as the Baleno facelift approaches?

The Maruti Baleno S-CNG is the highest-mileage factory-fitted CNG hatchback currently on sale in India, with an ARAI-claimed 30.61 km/kg. At ₹76/kg in Delhi, that works out to approximately ₹2.49 per km on CNG — the lowest running cost in the hatchback segment. The Baleno facelift is expected to launch around September 5, 2026, with the CNG variant expected to be priced around ₹8.30 lakh.

The Baleno S-CNG uses a factory-fitted single-cylinder setup, which does reduce boot space compared to the petrol variant. It is offered only with a 5-speed manual gearbox in CNG trim — no AMT option — which is a meaningful limitation for city buyers who want the convenience of an automatic. The 1.2-litre naturally aspirated engine produces around 77 PS on CNG, which is adequate for urban use but feels strained on highways.

Against the Tata Altroz iCNG (ARAI claim: 26.2 km/kg, starting at ₹7.30 lakh), the Baleno's mileage advantage is clear, but the Altroz's twin-cylinder setup preserves more boot space and now offers an AMT option — the Altroz Pure CNG AMT starts at ₹8.70 lakh. For buyers who commute long distances and prioritise fuel economy above all, the Baleno S-CNG remains the benchmark. For buyers who want an automatic CNG hatchback, the Altroz iCNG AMT is currently the only factory-fitted option in the segment.

For a broader comparison of CNG hatchbacks, see our guide to 7 Best CNG Hatchbacks Under ₹10 Lakh in India.

How does the Maruti Fronx S-CNG compare to upcoming compact SUV CNG rivals?

The Maruti Fronx S-CNG is a factory-fitted CNG compact SUV built on the Baleno's platform, offering an ARAI-claimed 28.51 km/kg — the highest mileage figure in the CNG compact SUV segment. Starting at approximately ₹9.50 lakh, it undercuts most rivals on price while delivering strong fuel economy.

Its weaknesses deserve attention. The Fronx S-CNG uses a single-cylinder CNG setup, which reduces boot space meaningfully. It is available only with the 1.2-litre naturally aspirated engine in CNG trim — the 1.0-litre turbo-petrol that makes the Fronx exciting in petrol form is not available with CNG. And like all Maruti S-CNG cars, there is no automatic gearbox option with CNG.

The upcoming Hyundai Exter Facelift CNG (expected ₹7–9.50 lakh) will compete directly, offering a dual-cylinder setup that preserves boot space and an AMT option. The Kia Sonet CNG (expected ₹10.50–13 lakh, Q4 2026) would compete at a higher price point with more features. For buyers who want the lowest running cost and are comfortable with a manual gearbox, the Fronx S-CNG is the rational choice today. For buyers who want automatic convenience or more boot space, the Exter Facelift CNG is worth waiting for.

Our detailed breakdown of Best CNG Compact SUVs Under ₹10 Lakh in India covers the Fronx and its current rivals in full.

What is the Kia Sonet CNG, and when is it expected?

The Kia Sonet CNG is expected in Q4 2026, with a price range of ₹10.50–13 lakh. Like the Carens CNG, it would mark Kia's expansion into factory-fitted CNG territory. Specific powertrain details have not been confirmed by Kia, but the Sonet's 1.2-litre naturally aspirated petrol engine is the most likely candidate for CNG pairing.

The Sonet CNG would compete with the Maruti Fronx S-CNG, the Hyundai Venue CNG, and the Tata Nexon iCNG. Among these, the Nexon iCNG (ARAI claim: 24 km/kg, twin-cylinder setup) is the most feature-rich option currently available, while the Fronx S-CNG offers the best claimed mileage. Where the Sonet CNG would differentiate itself — on features, pricing, or mileage — remains to be seen until Kia makes an official announcement.

What about the Mahindra XUV 3XO CNG? Is it confirmed?

The Mahindra XUV 3XO CNG is listed as an expected Q4 2026 launch with a price range of ₹9.50–12.50 lakh. Mahindra has not officially confirmed this model, and the specifications circulating — including CNG compatibility with the 1.2-litre turbo-petrol engine — are industry estimates rather than official disclosures.

If confirmed, the XUV 3XO CNG would be notable for combining turbocharged performance with CNG economy, a combination that no factory-fitted CNG car currently offers in India. The Maruti Grand Vitara S-CNG and Tata Nexon iCNG both use naturally aspirated engines in CNG trim, accepting a performance compromise in exchange for efficiency. A turbocharged CNG option, if it materialises, would redefine the segment's expectations.

Until Mahindra makes an official announcement, treat the XUV 3XO CNG as speculative.

How should a buyer calculate real-world CNG running costs in 2026?

Running cost arithmetic is straightforward but often skipped. Here is the calculation using Delhi CNG prices (approximately ₹76/kg as of mid-2026) and petrol prices (approximately ₹96/litre):

Maruti Baleno S-CNG (30.61 km/kg ARAI claim, assume 25 km/kg real-world):

CNG cost per km: ₹76 ÷ 25 = ₹3.04/km
Petrol equivalent (Baleno petrol, ~20 km/l real-world): ₹96 ÷ 20 = ₹4.80/km
Daily saving at 40 km/day: ₹70.40
Annual saving: ~₹25,700

Kia Carens Clavis CNG (22 km/kg estimated, conservative):

CNG cost per km: ₹76 ÷ 22 = ₹3.45/km
Petrol equivalent (Carens petrol, ~13 km/l real-world): ₹96 ÷ 13 = ₹7.38/km
Daily saving at 40 km/day: ₹157.20
Annual saving: ~₹57,400

The Carens CNG's absolute saving per km is larger because the petrol baseline is less efficient, even though the CNG mileage is lower than the Baleno's. This is a critical point: CNG mileage in km/kg and petrol mileage in km/l cannot be compared directly — they are different units measuring different fuels. Always calculate cost per km using local fuel prices.

ARAI figures are manufacturer claims tested under controlled conditions. Real-world mileage typically runs 15–20 percent lower, particularly in city traffic with frequent stops, air conditioning use, and short trips that don't allow the engine to warm up fully. Factor this in before committing to a CNG car based on claimed figures alone.

What are the trade-offs every CNG buyer must accept in 2026?

CNG cars in India involve four trade-offs that every buyer should understand before visiting a showroom.

Boot space: Single-cylinder setups (Maruti S-CNG range, Kia Carens CNG) place a large cylinder in the boot, reducing usable space by 60–100 litres or more. Twin-cylinder setups (Tata iCNG, Hyundai Hy-CNG Duo, Nissan Gravite expected) mount two smaller cylinders under the floor, preserving most of the boot. If you regularly carry luggage, a pram, or sports equipment, the cylinder configuration matters more than the mileage figure.

Power loss: CNG combustion produces less energy per unit volume than petrol, and factory-fitted CNG cars typically lose 10–20 percent of peak power in CNG mode. The Kia Carens CNG loses 22 hp (19 percent). The Baleno S-CNG loses approximately 13 hp. This is felt most on highway overtaking and hill climbs. Most buyers adapt, but it is a real compromise.

Refuelling infrastructure: CNG station density varies dramatically by city. Delhi-NCR, Mumbai, Pune, Ahmedabad, and Surat have dense networks. Tier-2 and Tier-3 cities often have limited or no CNG infrastructure. A CNG car in a city with poor infrastructure is a petrol car that happens to have a heavy cylinder in the boot. Check CNG station availability on your regular routes before buying.

Automatic gearbox availability: Most factory-fitted CNG cars in India are manual-only. Exceptions include the Tata Altroz iCNG AMT, Tata Punch iCNG AMT, and the expected Hyundai Exter Facelift CNG AMT. Maruti's entire S-CNG range is manual-only in CNG trim. If you want an automatic CNG car, your options are currently limited to Tata's iCNG AMT models and a handful of expected launches.

What is Maruti Suzuki's position as new CNG entrants arrive?

Maruti Suzuki is the market leader in India's factory-fitted CNG segment, with the broadest range spanning hatchbacks (Celerio, WagonR, Baleno, Swift), compact SUVs (Fronx), mid-size SUVs (Grand Vitara), and MPVs (Ertiga, XL6). The brand's CNG advantage has historically rested on three pillars: the widest service network in India, the highest claimed mileage figures in each segment, and the lowest CNG variant prices.

Those advantages are being tested in 2026. Kia's factory-fitted CNG entry brings a more premium cabin and a brand with strong aspirational appeal. Tata's iCNG range has already demonstrated that twin-cylinder setups can preserve boot space without sacrificing mileage. Hyundai's Hy-CNG Duo technology is about to extend the same boot-space advantage to the micro-SUV segment.

Maruti's honest weaknesses in CNG are: no automatic gearbox option across its entire S-CNG range, single-cylinder setups that reduce boot space, and CNG availability only on naturally aspirated engines (no turbo-CNG). These are structural limitations that newer entrants are actively addressing.

For buyers who prioritise lowest running cost, widest service network, and highest resale value, Maruti S-CNG remains the rational default. For buyers who want automatic convenience, better boot space, or a more feature-rich cabin, the new entrants from Kia, Hyundai, and Tata are worth waiting for.

What should a buyer do right now — wait or buy?

If your daily commute exceeds 40 km in a city with good CNG infrastructure, and you need a car before October 2026, the Maruti Baleno S-CNG (hatchback), Maruti Fronx S-CNG (compact SUV), or Maruti XL6 S-CNG (MPV) are proven, immediately available options with the lowest running costs in their segments. The Tata Altroz iCNG AMT is the right choice if you specifically need an automatic CNG hatchback today.

If you can wait until Q4 2026, the Kia Carens and Carens Clavis CNG prices will be announced by October, giving you a proper comparison point for the MPV segment. The Hyundai Exter Facelift CNG should also be clearer by then.

If you are considering the Tata Curvv iCNG, Kia Sonet CNG, or Mahindra XUV 3XO CNG, these are not confirmed products yet. Waiting for them means waiting into 2027. Buy a proven model now and revisit at your next upgrade cycle, or wait only if your purchase is genuinely flexible by 6–12 months.

CNG cars suit buyers with high daily mileage (40+ km/day), access to CNG stations on their regular routes, and a 4–5 year ownership horizon over which the fuel savings justify the upfront premium over a petrol variant. If any of those conditions don't apply to you, a petrol car may still be the more practical choice regardless of which CNG models are launching.