Tata Aeris CNG vs Maruti Dzire CNG AMT: At a Glance

Spec	Tata Aeris CNG MT	Tata Aeris CNG AMT	Maruti Dzire CNG MT	Maruti Dzire CNG AMT
Starting price (ex-showroom)	₹6.29 lakh	TBA at launch	₹8.11 lakh (VXi)	₹8.53 lakh (VXi)
ARAI mileage (CNG)	Not yet certified	Not yet certified	33.73 km/kg	36.47 km/kg
CNG kit type	Factory-fitted (twin-cylinder)	Factory-fitted (twin-cylinder)	Factory-fitted (single cylinder)	Factory-fitted (single cylinder)
CNG tank capacity	70 L (water capacity)	70 L (water capacity)	55 L	55 L
Boot space (with CNG)	419 litres	419 litres	~382 litres (reduced)	~382 litres (reduced)
CNG power output	75.5 PS / 96.5 Nm	75.5 PS / 96.5 Nm	70 hp / 101 Nm	70 hp / 101 Nm
Airbags (standard)	6	6	6	6
AMT availability on CNG	Yes (segment-first)	Yes (segment-first)	Yes (new for 2026)	Yes (new for 2026)
Length	3,995 mm	3,995 mm	3,995 mm	3,995 mm

Aeris CNG-AMT price not announced at launch; Dzire CNG ARAI figures are manufacturer claims.

The Aeris undercuts the Dzire CNG by nearly ₹1.82 lakh at entry level while retaining a meaningfully larger boot. The Dzire counters with a certified mileage advantage that, over high-mileage use, translates to tangible fuel savings.

What Exactly Is the Tata Aeris CNG, and What Does It Cost?

The Tata Aeris is a sub-4-metre compact sedan built on Tata Motors' X-Alfa architecture, offered with petrol, CNG manual, and CNG-AMT powertrain options from launch. It's the first car in its segment to combine a factory-fitted twin-cylinder CNG system with an AMT gearbox.

Tata Motors launched the Aeris on 25 September 2026 at a starting price of ₹5.29 lakh for the petrol manual Smart variant. The full CNG price ladder at launch:

Variant	Petrol MT	CNG MT
Smart	₹5.29 lakh	₹6.29 lakh
Pure	₹6.14 lakh	₹7.14 lakh
Pure+	₹6.74 lakh	₹7.74 lakh
Creative	₹7.49 lakh	₹8.49 lakh
Accomplished	₹8.19 lakh	₹9.19 lakh

All prices ex-showroom. CNG-AMT prices were not announced at launch.

The CNG premium over petrol is a flat ₹1 lakh across all variants—competitive by segment standards. Petrol AMT pricing also arrived later, suggesting a phased rollout. When confirmed, the CNG-AMT combination—which Tata positions as a segment-first—will likely carry a premium over the CNG manual.

Tata Motors fits the CNG kit at the factory, meaning the manufacturer warranty covers the entire CNG system. Aftermarket or dealer-fitted kits typically void powertrain coverage and carry no OEM liability—a distinction that matters significantly for long-term ownership.

How Does the Aeris CNG Engine Perform?

The Aeris runs a 1.2-litre Revotron three-cylinder petrol engine. In CNG mode, output is rated at 75.5 PS and 96.5 Nm of torque, compared to 86 PS and 113 Nm on petrol. This 12-percent power reduction is typical of CNG conversions and represents a trade-off every buyer in this segment accepts.

The Aeris CNG includes what Tata calls "direct-start capability"—the engine starts directly on CNG rather than switching from petrol, eliminating the brief petrol consumption at ignition that older CNG cars required. A dedicated engine calibration for CNG mode completes the package.

ARAI mileage figures for the Aeris CNG had not been certified at launch. Tata Motors has not released an official km/kg claim in available sources. Buyers should treat any pre-certification estimates with caution until official ARAI numbers are published.

What Is the Aeris's Twin-Cylinder Advantage Over the Dzire?

Twin-cylinder CNG technology splits gas storage into two smaller cylinders mounted under the boot floor, rather than using one large cylinder that sits on top and dramatically reduces luggage capacity.

The Aeris uses a 70-litre water-capacity twin-cylinder tank and retains a 419-litre boot. This is a significant engineering achievement for a sub-4-metre sedan. The Maruti Dzire CNG uses a 55-litre single-cylinder tank in the boot, which noticeably reduces luggage room and leaves space mainly for soft bags, according to owner feedback. The Dzire's CNG boot is estimated at around 382 litres with the cylinder fitted.

For a family sedan buyer who needs to carry luggage on weekend trips or airport runs, the Aeris's 419-litre boot is a meaningful advantage. For a cab or fleet operator who rarely fills the boot, the Dzire's smaller tank is less of a concern.

Tata Motors has already deployed twin-cylinder technology in the Punch iCNG, which retains 210 litres of boot space—a tighter package than the Aeris because the Punch is a taller SUV with different packaging constraints. The Aeris benefits from the sedan body style, which allows a longer boot floor and more room to integrate the twin cylinders without sacrificing usable space.

How Does the Maruti Dzire CNG AMT Compare on Mileage?

The Maruti Dzire CNG AMT is a factory-fitted S-CNG sedan using Maruti Suzuki's 1.2-litre Z-Series three-cylinder engine, paired with a 5-speed automated manual transmission—a combination unavailable in the Dzire until September 2026.

The Dzire CNG AMT launched on 21 September 2026 in VXi and ZXi variants, priced from ₹8.53 lakh ex-showroom. Its ARAI-claimed mileage of 36.47 km/kg is the highest in the compact sedan CNG segment, beating even the manual Dzire CNG's 33.73 km/kg. In CNG mode, the engine produces 70 hp and 101 Nm of torque.

The Dzire CNG AMT has real limitations worth acknowledging:

• The 55-litre single cylinder meaningfully reduces boot space compared to the Aeris's twin-cylinder setup.
• CNG is available only on VXi and ZXi trims, so buyers wanting the top ZXi+ with its sunroof, 360-degree camera, and wireless charger must choose petrol.
• The ₹8.53 lakh starting price is ₹2.24 lakh above the Aeris CNG Smart entry point, though comparable mid-spec variants narrow that gap.

The older Dzire CNG manual (VXi) was priced at ₹8.11 lakh, so the AMT adds approximately ₹42,000 over the manual—a reasonable premium for buyers wanting automatic convenience in city traffic.

What Are the Running Costs: Aeris CNG vs Dzire CNG in Real Numbers?

Running cost arithmetic is where CNG cars make or break their case. Using Delhi fuel prices from July 2026—petrol at ₹102.12/litre and CNG at ₹83.09/kg—as a reference:

Maruti Dzire CNG AMT (ARAI: 36.47 km/kg): ₹83.09 ÷ 36.47 = ₹2.28 per km (ARAI-based; real-world will be higher)

Maruti Dzire CNG Manual (ARAI: 33.73 km/kg): ₹83.09 ÷ 33.73 = ₹2.46 per km

Maruti Dzire Petrol Manual (ARAI: 24.79 km/l): ₹102.12 ÷ 24.79 = ₹4.12 per km

Tata Aeris CNG (ARAI figure not yet certified): Estimated range pending official certification. If the Aeris CNG achieves 28–30 km/kg in real-world conditions—a reasonable expectation for a twin-cylinder sedan in this class—running cost would be approximately ₹2.77–₹2.97 per km at Delhi CNG prices.

The Dzire CNG AMT's mileage advantage is real and significant. At 100 km a day, the Dzire CNG saves close to ₹60,000 a year in fuel versus its petrol equivalent. Once the Aeris CNG's ARAI figures are published, a direct per-km comparison will be possible.

Breakeven on Dzire CNG vs Petrol: The Dzire CNG VXi costs ₹89,000 more than the Dzire VXi petrol manual. At a saving of ₹1.66 per km, the breakeven distance is roughly 53,600 km—about 2.9 years at 50 km/day.

Breakeven on Aeris CNG vs Petrol: The Aeris CNG Smart costs ₹1 lakh more than the Aeris petrol Smart. If running cost savings are similar to the Dzire's (approximately ₹1.50–₹1.70 per km saved over petrol), breakeven would fall in the 59,000–67,000 km range—slightly longer than the Dzire, though the Aeris's lower absolute price may still favour it for budget-conscious buyers.

Scenario	Dzire CNG AMT	Aeris CNG MT (estimated)
Running cost per km (ARAI-based)	₹2.28	~₹2.77–₹2.97 (estimated)
Monthly cost at 50 km/day	~₹3,420	~₹4,155–₹4,455 (est.)
Annual fuel saving vs petrol	~₹27,000+	TBC post-ARAI certification
Boot space with CNG	~382 litres	419 litres

Aeris CNG mileage figures are estimates pending ARAI certification. Dzire figures are manufacturer ARAI claims; real-world mileage will be lower for both.

What Features Does the Aeris CNG Offer at Each Price Point?

The Aeris punches above its price in features, particularly at lower variants. Tata Motors has made six airbags standard across all variants—a safety commitment that rivals at this price point don't always match.

Standard safety equipment includes electronic stability programme (ESP), ABS with EBD, corner stability control, hill hold assist, ISOFIX mounts, tyre-pressure monitoring system (TPMS), and front and rear parking sensors.

The infotainment package includes a 26.03-cm (approximately 10.25-inch) HD touchscreen, a 12.7-cm Digital Island Cluster, wireless Apple CarPlay and Android Auto, dual smartphone connectivity, and wireless charging. The Aeris also gets iRA connected-car technology with over 35 functions, automatic climate control, 65W USB-C charging, and a six-speaker audio system.

Higher variants add a 360-degree HD camera with 2D and 3D views, a Blind View Monitor, and a DVR dashcam—features that Tata positions as segment-firsts. Ventilated leatherette seats, rear AC vents, a rear centre armrest, a cooled glovebox, push-button start, and auto-folding ORVMs round out the comfort package on upper trims.

The Aeris is built on Tata's X-Alfa architecture using ultra-high-strength steel and comes with Tata's Safety Dome package covering over 100 safety features, including thermal incident protection and leak detection for the CNG system—a detail that matters for CNG buyers concerned about safety.

The Dzire CNG AMT's VXi trim, at ₹8.53 lakh, offers 15-inch alloy wheels, LED headlamps, a reverse parking camera, TPMS, a 7-inch touchscreen with wireless Android Auto and Apple CarPlay, and automatic climate control. The Aeris Creative CNG at ₹8.49 lakh—nearly the same price—offers a larger touchscreen, six airbags as standard, and the 360-degree camera. Feature-for-feature at similar price points, the Aeris appears to offer more, though Maruti's certified mileage lead and service network density remain genuine advantages.

Is the Aeris CNG-AMT a Segment-First, and Why Does It Matter?

Yes. The Aeris CNG-AMT is the first factory-fitted CNG sedan in India to combine an automated manual transmission with a twin-cylinder CNG system. Before this, CNG buyers in the sedan segment who wanted an automatic gearbox had no factory option—they either chose petrol AMT or accepted a manual CNG.

The Maruti Dzire CNG AMT, launched four days before the Aeris, is also new to the segment—Maruti had previously restricted CNG to manual gearboxes in the Dzire. Both cars are responding to the same buyer demand: urban commuters who want CNG economy without the fatigue of a manual clutch in stop-go traffic.

The practical significance is substantial. In Delhi, Mumbai, Bengaluru, and other CNG-infrastructure cities, the combination of low running cost and automatic convenience is the ideal daily-driver setup. Fleet operators running app-cab services increasingly prefer AMT for driver comfort on long shifts.

The Aeris CNG-AMT pricing had not been announced at launch. Given that the Dzire CNG AMT carries a ~₹42,000 premium over the Dzire CNG manual, a similar premium on the Aeris would put the Aeris CNG-AMT Smart at approximately ₹6.69–₹6.79 lakh—still significantly below the Dzire CNG AMT's ₹8.53 lakh entry point.

What Are the Honest Trade-offs of Buying the Aeris CNG?

Every CNG car involves trade-offs, and the Aeris is no exception.

Power loss on CNG: The Aeris drops from 86 PS on petrol to 75.5 PS on CNG—a reduction of about 12 percent. Overtaking on highways requires more planning, and the car will feel noticeably less responsive in CNG mode, particularly with the AMT's slower gear changes under hard acceleration.

ARAI mileage not yet certified: At launch, Tata Motors had not published an ARAI km/kg figure for the Aeris CNG. Buyers comparing running costs with the Dzire CNG AMT's certified 36.47 km/kg cannot yet make a like-for-like calculation. This is a genuine gap in the purchase decision.

CNG-AMT price unknown: The most interesting variant—combining automatic convenience with CNG economy—had no announced price at launch. Buyers interested in this combination must wait for confirmation before finalising a budget.

CNG station availability: The Aeris's twin-cylinder 70-litre tank gives it a longer theoretical range between fills than the Dzire's 55-litre tank, which helps in cities or on routes where CNG stations are spaced further apart. However, CNG infrastructure remains uneven outside major metros, and any CNG car buyer should map their regular routes against station availability before committing.

Service network: Tata Motors' passenger vehicle service network, while growing, is smaller than Maruti Suzuki's. For buyers in smaller cities or towns, Maruti's denser network is a practical advantage that doesn't show up in spec sheets.

How Does the Aeris CNG Compare to Other CNG Cars in the Market?

The Aeris enters a market where factory CNG cars cost roughly ₹3 per km to run versus ₹5–6 per km for petrol equivalents at current fuel prices. The sedan segment is smaller than hatchbacks, but the Aeris's pricing puts it in an interesting position relative to CNG hatchbacks too.

The Maruti Celerio CNG leads the overall mileage chart at 34.43 km/kg, followed by the WagonR CNG at 34.05 km/kg—both starting below ₹7 lakh. The Aeris CNG Smart at ₹6.29 lakh competes directly with these hatchbacks on price while offering a sedan body, more boot space, and a longer wheelbase (2,450 mm).

For buyers who want more space than a hatchback but can't stretch to the Dzire CNG AMT's ₹8.53 lakh, the Aeris CNG fills a genuine gap. For buyers who prioritise certified mileage and Maruti's service network above all else, the Dzire CNG AMT remains the benchmark.

If you're exploring the broader CNG space, our guide to the 5 Best CNG Cars in India (2026) covers hatchbacks, sedans, and SUVs in one place. For SUV alternatives in a similar budget, the Best CNG Compact SUVs Under ₹15 Lakh guide is worth a read.

Who Should Buy the Aeris CNG, and Who Should Choose the Dzire CNG AMT?

The answer depends on three variables: daily distance, boot space needs, and whether certified mileage or price matters more to you.

The Aeris CNG makes sense if:

• Your budget is under ₹8.5 lakh and you want a sedan (not a hatchback) with factory CNG.
• You regularly carry luggage and need a usable boot—the 419-litre twin-cylinder setup is a genuine advantage over the Dzire's ~382-litre single-cylinder arrangement.
• You're willing to wait for ARAI mileage certification before finalising running-cost calculations.
• You want the CNG-AMT combination at the lowest possible price point once that variant is priced.

The Dzire CNG AMT makes sense if:

• Certified mileage is your primary criterion—36.47 km/kg ARAI is the best in the segment.
• You drive 50+ km daily and want the most fuel-efficient CNG sedan available.
• Maruti's service network density matters to you, particularly if you're outside a major metro.
• You're comfortable with the boot space compromise from the single cylinder.

Neither car is right if:

• You need the top trim's features (sunroof, full 360-degree camera) with CNG—neither car offers CNG on its absolute top variant.
• You frequently drive through areas with sparse CNG infrastructure—petrol AMT remains the more practical choice in those cases.

The compact sedan CNG segment in India has just become genuinely competitive. The Aeris's twin-cylinder boot retention and aggressive pricing challenge Maruti's mileage leadership in a way the segment hasn't seen before. For buyers doing the math in late 2026, both cars deserve a test drive before a decision.