CNG Conversion in India: 50 Key Statistics 2026

Data sourced from MoPNG (Ministry of Petroleum & Natural Gas), PNGRB (Petroleum and Natural Gas Regulatory Board), IGL, MGL, SIAM, and publicly available government reports. Where exact 2026 figures are unavailable, 2024–25 data with growth trend projections is used.

1. Market Size & Growth

• India's CNG vehicle fleet grew from ~3.4 million in 2020 to over 7 million by 2025 — doubling in five years driven by rising petrol prices and CGD expansion.
• The passenger vehicle segment accounts for ~65% of all CNG vehicles in India; the rest are 3-wheelers, buses, and commercial vehicles.
• CNG penetration in the new car market crossed 12% in FY2025 — one in eight new cars sold now has CNG capability (factory-fitted or aftermarket).
• The aftermarket CNG kit industry is estimated at ₹2,500–3,500 crore annually, with over 4,000 authorised installation centres across the country.
• India's natural gas consumption target is 15% of the energy mix by 2030 — currently at ~6%. CGD and CNG vehicles are a key lever to achieve this goal.
• Gujarat and Delhi NCR collectively account for ~45% of all CNG vehicle registrations in India.
• The Indian government has allocated CGD licences to 400+ geographical areas covering 28 states and 8 union territories as of 2025.

2. CNG Infrastructure — Stations & Network

• Delhi NCR has the densest CNG station network in India with IGL operating 600+ stations — one station roughly every 3–4 km in central Delhi.
• Gujarat's network (IGL, Gujarat Gas, GSPC Gas) operates 1,200+ CNG stations making it the state with the highest CNG station count.
• Mumbai's MGL network covers Mumbai, Thane, Raigad, and Navi Mumbai with 320+ stations and plans to expand to 400+ by 2027.
• India added approximately 800–1,000 new CNG stations per year between 2022 and 2025 — among the fastest infrastructure build-outs globally.
• CGD networks now cover over 300 districts across India, with tier-2 and tier-3 city expansion accelerating post-2023.
• Average CNG station fuelling time is 5–8 minutes — comparable to petrol; long queues common in Delhi NCR during peak hours (7–10 AM, 5–8 PM).
• PNGRB's 10th round of CGD bidding (2023–24) allocated licences for 50+ new geographical areas, adding ~8 crore potential households to the gas grid.

3. Cost & Fuel Savings Statistics

• On average, CNG costs 55–65% less per kilometre than petrol for Indian passenger cars — the single biggest financial argument for conversion.
• A driver doing 1,500 km/month saves ₹5,000–₹7,500 every month after switching to CNG (basis Delhi NCR fuel prices, May 2026).
• At this savings rate, a ₹40,000 CNG kit pays for itself in 6–8 months — one of the fastest ROI modifications available for a passenger vehicle.
• Over 5 years of ownership, a CNG car user saves ₹3–4.5 lakh in fuel costs compared to a petrol-only driver (1,500 km/month basis).
• CNG kit prices range from ₹35,000 for basic sequential kits to ₹78,000 for Direct Injection (TGDI engine) kits — depending on car model and cylinder size.
• The 90-litre CNG cylinder (18 kg capacity) provides approximately 450–500 km range on a full tank — comparable to a petrol car's full tank range.
• CNG mileage on Indian cars averages 20–36 km/kg — when converted to petrol-equivalent, this is approximately 28–50 km/litre.
• Monthly maintenance cost of a CNG kit is near-zero — standard service every 10,000 km alongside normal car servicing; kit components typically last 5–8 years.

4. Popular CNG Cars & Brand Statistics

• Maruti Suzuki dominates the CNG car market — factory-fitted CNG variants of WagonR, Alto, Swift, Dzire, Ertiga, and Baleno collectively account for over 55% of all CNG cars sold in India.
• Maruti Suzuki sold over 5.5 lakh CNG cars in FY2025 — accounting for roughly 1 in 4 Maruti cars sold being CNG-powered.
• Hyundai's CNG lineup (Grand i10 Nios, Aura, i20, Verna) grew 38% year-on-year in FY2025 — the company's fastest-growing powertrain segment.
• Tata Motors entered the factory-fitted CNG space aggressively — Tiago CNG and Tigor CNG collectively sold 80,000+ units in FY2025.
• The aftermarket CNG kit segment is dominated by Italian brands — Lovato, Mijo, Gastech, and Motozen — which collectively hold ~70% market share in the organised installation segment.
• Direct Injection CNG kits (for turbocharged engines) emerged as a significant category post-2023, driven by the popularity of Skoda, VW, and Mahindra XUV700 — which all use TSI/TGDI engines.
• The 60-litre cylinder (12 kg capacity) is chosen by ~70% of CNG conversion customers due to lower boot space impact; 90L (18 kg) preferred by high-mileage drivers.
• ARAI certification is mandatory for all aftermarket CNG kits sold in India — kits without ARAI approval are illegal and cannot receive RTO endorsement.

5. Environmental Impact Statistics

• CNG combustion produces ~25% lower CO₂ per kilometre compared to petrol — making it a meaningful near-term emissions reduction tool for India's transport sector.
• Delhi's Supreme Court-mandated CNG conversion of public transport (2001) is credited with reducing Delhi's PM2.5 levels by 30–40% between 2002 and 2010, according to CPCB data.
• CNG produces near-zero sulphur dioxide (SO₂) — unlike petrol and diesel which contribute significantly to acid rain and respiratory illness.
• India's CNG vehicle fleet collectively avoids approximately 15–18 million tonnes of CO₂ equivalent annually compared to an equivalent petrol fleet.
• CNG has a lower risk of accidental fire compared to petrol — being lighter than air, CNG disperses upward in case of leakage rather than pooling on the ground.
• Government-mandated BS6 (Bharat Stage 6) emission norms apply equally to CNG vehicles — all ARAI-certified kits installed post-2020 are BS6 compliant.

6. State & City-wise CNG Adoption

• Gujarat has the highest CNG vehicle density in India — cities like Surat, Rajkot, Jamnagar, and Vadodara have among the highest per-capita CNG vehicle rates globally.
• Delhi NCR's CNG adoption is policy-driven — all 3-wheelers, taxis, and DTC buses in Delhi run on CNG, mandated by the Supreme Court and NGT since 2002.
• Pune and Nashik are among India's fastest-growing CNG markets — Maharashtra Natural Gas expanded from 80 to 120+ stations between 2023 and 2025.
• Bangalore's CNG market is relatively nascent but growing — GAIL Gas expanded its station count by 40% between 2023 and 2025 as the city's traffic and fuel costs surged.
• Chennai and Cochin are emerging CNG markets — infrastructure build-out is underway with TIDCO Gas and Kerala State Gas respectively targeting 100+ stations by 2027.

7. Installation & RTO Process Facts

• A standard sequential CNG kit installation takes 6 to 8 hours at an authorised workshop — same-day pickup in most cases.
• Direct Injection CNG kit installation (for TSI/TGDI engines) takes 8 to 12 hours due to ECU mapping and additional calibration requirements.
• RTO endorsement (RC update) after CNG conversion is mandatory under Section 52 of the Motor Vehicles Act — failure to endorse can result in a fine of ₹5,000–₹10,000.
• The RC endorsement process in most Indian cities takes 2 to 6 weeks — states with digitised RTO processes (Delhi, Gujarat, Maharashtra) are faster.
• Form 31 (Intimation of Alteration) must be submitted to the respective RTO along with ARAI certificate, insurance copy, and RC — all of which authorised installers handle on the owner's behalf.
• CNG cylinders must be hydro-tested every 3 years and replaced every 15 years as per PESO (Petroleum and Explosives Safety Organisation) regulations.
• Warranty on ARAI-certified aftermarket CNG kits ranges from 1 to 2 years depending on brand and installer — covering kit components and fitment.

About this report: This article is compiled by the team at LetsGO CNG — India's trusted CNG kit installation brand operating across Delhi NCR, Mumbai, Ahmedabad, Surat, Rajkot, Jamnagar, Bangalore, Hyderabad, Pune, Cochin, and Chennai. Data sourced from MoPNG, PNGRB, IGL, MGL, SIAM annual reports, ARAI, and publicly available government statistics. Some figures are estimates based on available 2024–25 data and projected trends.

For press enquiries or data clarifications: letsgocng.in/contact