Nissan Gravite CNG real world fuel economy tested, explained

The Nissan Gravite, launched in February 2026, is among the most affordable three-row MPVs sold in the country. In May, Nissan started offering the Gravite with a dealer-level CNG kit. Manufactured by Motozen, the kit is government- and ICAT-approved, and is available at an additional cost of Rs 83,000. 

We’ve now put the Gravite CNG through our real-world fuel-efficiency tests to see how it performs.

1. CNG kit available at an introductory price of Rs 83,000
2. Spare wheel is mounted underneath the boot floor
3. 3-year/1,00,000km third-party warranty offered on CNG components

It is powered by the same 1.0-litre, three-cylinder petrol engine (BR10) as seen in the Renault Triber, paired to a 5-speed gearbox. It produces 72hp and 96Nm of torque in petrol mode, however, Nissan is yet to reveal the efficiency and the engine’s output figures when run on CNG. The twin CNG tanks are stacked vertically in the boot one above the other, each with a 25-litre capacity.

In our tests, the Gravite CNG delivered 15.9km/kg in the city and 25.1km/kg on the highway, for an overall average efficiency of 20.5km/kg.

When refilled from empty, we managed to fill 7.7kg of CNG, although this can vary depending on the pump pressure and ambient temperature. Based on our average overall efficiency of 20.5km/kg, one can expect a real-world range of 150-160km on a full tank of CNG.

Autocar India’s fuel-efficiency testing

Since CNG tanks are more difficult to fill consistently due to variables such as ambient temperature and pump pressure, we did not use our standard tankful-to-tankful methodology. Instead, for our real-world tests, we emptied the CNG tank and refilled it with 2kg of CNG. We then drove the vehicle in city conditions until the gas was exhausted. The same process was repeated for the highway run. Throughout both tests, the Gravite was driven exclusively in CNG mode.

Before conducting our real-world fuel-efficiency tests, we maintain tyre pressures based on the manufacturer’s recommendations. These cars are driven in fixed city and highway loops in and around Navi Mumbai and we maintain certain average speeds. Throughout the tests, there is only one person in each car, and the aircon is set to fan speed 2 with temperature dialed to the lowest position. We operate other electricals, such as the audio system, indicators and wipers, just like a regular user would. Periodic driver swaps further neutralise variations in driver patterns.