The Tata Punch CNG, a popular eco-friendly version of the Punch compact SUV, offers drivers an economical and cleaner fuel option. One of the most important specifications buyers look for is: how much CNG does a Tata Punch hold? The answer involves understanding tank size in liters, usable gas quantity in kilograms, and how this translates to real-world driving range. In this topic, we’ll explore the CNG capacity in depth, its impact on mileage and performance, and what owners can expect from this efficient vehicle.
CNG Tank Capacity Explained
Liter-Based Capacity
The Tata Punch CNG is equipped with a high-pressure gas tank that stores compressed natural gas. Most official specifications list the tank’s capacity as60 liters. This figure represents the internal volume of the tank when empty and indicates the maximum volume of CNG it can hold under pressure.
Usable Gas in Kilograms
Unlike petrol, CNG capacity is often measured in liters (water capacity) or kilograms (mass). The 60 L tank converts to approximately89 kg of CNG, depending on temperature and pressure conditions.
Driving Range and Mileage
ARAI-Certified Mileage
Tata lists an ARAI-certified mileage for the Punch CNG at26.99 km/kg.
Estimated Range
- At 8 kg usable CNG Ã 26.99 km/kg = ~216 km
- At 9 kg usable CNG Ã 26.99 km/kg = ~243 km
Thus, a full CNG tank typically allows between 215 and 245 km of travel, depending on driving style and conditions.
Factors Affecting CNG Capacity and Usage
Ambient Conditions
The pressure and density of CNG tanks vary with temperature. Cooler air results in higher gas density and slightly more fuel by weight, increasing the actual usable gas in the tank.
Tank Fill Efficiency
Tank filling may stop before reaching full capacity to maintain safety margins, known as ullage. As a result, a 60 L tank often accepts slightly less than its theoretical maximum during rapid refills.
Driving Style & Load
Aggressive acceleration, heavy gear usage, and urban stop-start conditions will reduce actual mileage below ARAI figures. Highway driving at steady speeds yields better efficiency than inner-city commutes.
Complementary Petrol Tank
In addition to its CNG system, the Tata Punch CNG retains its original petrol tank of37 liters.
Practical Tips for CNG Users
Maximize Tank Use
- Refuel when the tank gauge shows around 20%, avoiding driving bombed out to empty.
- Check tank pressure during colder months lower ambient temperature can yield better capacity.
Maintain the CNG System
- Regularly inspect CNG fittings and hoses for leakage.
- Get periodic servicing at authorized centers for safe performance.
Plan Refueling Stops
With a typical range of ~220 km on CNG, plan routes to ensure CNG stations are within reach. Use petrol as a fallback for longer trips.
Comparing Punch CNG with Rivals
Similar Compact SUVs
Many rivals, such as Maruti Suzuki Brezza or Hyundai Exter, do not yet offer CNG versions. Even where they do, their tank sizes are typically smaller (3540 L), leading to shorter CNG-only range. The Tata Punch’s 60 L tank provides a clear advantage in single-fill driving range.
Utility vs. Convenience
However, CNG infrastructure is still developing. The added petrol tank and dual-fuel flexibility makes the Punch CNG more practical in areas with limited CNG availability.
Safety and Regulations
Tank Certification
The high-pressure CNG tank undergoes rigorous certification to meet safety and crash standards. Regular stamping and inspections are mandatory by regulation.
Refill Protocols
CNG station staff follow specific steps to ensure correct pressure levels and avoid overfilling, which can affect compliance with safety standards.
In summary, the Tata Punch CNG is fitted with a60 liter CNG tank, equivalent to about89 kg of compressed natural gas. With an ARAI-claimed efficiency of 26.99 km/kg, users can expect a driving range between 215 and 245 km per fill. The additional 37 liter petrol tank extends usability further, making the Punch CNG a versatile, economical, and well-rounded choice for eco-conscious drivers in India. By understanding capacity, range, and proper usage, owners can optimize their vehicle’s performance and enjoy substantial savings.
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