NEW DELHI: Hyundai rates the Grand i10 Nios bi-fuel petrol-CNG engine at 69 PS, against 83 PS for the petrol-only version. Its Hy-CNG Duo uses a dual-cylinder arrangement, but it remains a five-speed manual in the official specification. The important detail for families is that the CNG choice also narrows the available grades to Magna and Sportz.
| Published specification | Grand i10 Nios information |
|---|---|
| Bi-fuel maximum power | 69 PS at 6,000 rpm |
| Petrol-only maximum power | 83 PS at 6,000 rpm |
| Bi-fuel maximum torque | 95.2 Nm at 4,000 rpm |
| CNG gearbox | 5-speed manual |
| Hy-CNG Duo grades | Magna and Sportz |
| Tank specification | 37 litres petrol plus 60 litres CNG water equivalent |
What changes when the fuel choice changes
The official performance page separates the petrol and bi-fuel outputs, while the brochure supplies the torque and transmission details. Both engines are listed at 1,197 cc. Choosing CNG therefore changes the published output and fuel system without changing the stated engine displacement.
The difference between the stated maximum power figures is 14 PS. That is a specification comparison, not a road-test result. It does not tell a driver how the car will respond on a particular incline with passengers and luggage, or establish an overtaking time. Those questions cannot be answered by subtracting peak power figures.
Hyundai lists Smart Auto AMT for the petrol range but a five-speed manual for the bi-fuel version. A request for a Nios automatic and a request for a factory-listed Nios CNG therefore lead to different configurations. The general model page's mention of AMT should not be carried over to the CNG car.
Magna and Sportz are the relevant equipment columns
The live feature matrix marks Hy-CNG Duo under Magna and Sportz. It leaves the CNG row blank for the other named grades. That makes the matrix more useful than a general list of everything the Nios range can offer: the fuel system has already narrowed the equipment comparison.
There is a meaningful distinction between those CNG grades. Sportz has electronic stability control, vehicle stability management and hill-start assist listed as standard, while Magna has dashes against those rows. Both have the listed driver, passenger, side and curtain airbags, plus ABS with EBD.
The table also lists a rear camera and rear defogger for Sportz, with neither marked for Magna. Rear parking sensors are shown across the range. Those are separate functions, so the presence of sensors should not be described as confirmation that a Magna CNG has the Sportz camera arrangement.
For a family already settled on CNG, these distinctions are more useful than comparing the cheapest Nios with the most elaborate petrol edition. The actual choice is between the equipment columns available with the fuel system. Edition names elsewhere in the range do not make those editions CNG configurations.
How to read the dual-cylinder claim
Hyundai describes Hy-CNG Duo as using two cylinders to improve boot-space usability. The page does not provide a verified luggage-volume number alongside that description. There is consequently no litre claim here for the CNG boot, nor a percentage increase calculated from an unidentified earlier layout.
A useful demonstration would keep the rear seat in its normal travelling position and load the bags the household actually carries. Groceries, a folded pushchair and a suitcase ask different things of the opening and floor. The fact that two cylinders are fitted does not by itself establish whether a particular awkward object will fit.
The tank label also deserves careful reading. Hyundai states 60 litres of CNG capacity as water equivalent alongside a 37-litre petrol tank. Water equivalent is the label attached to the CNG figure; it should not be presented as a guaranteed refill in kilograms or converted directly into a driving-range promise.
That distinction prevents a common paperwork error: comparing the CNG water-equivalent number with petrol litres as though they describe the same usable quantity of fuel. A range or running-cost calculation would require additional confirmed consumption and fuel-price inputs. None is assumed from the tank numbers in this report.
A compact car with a specific family-use question
The Nios body is listed at 3,815 mm long, 1,680 mm wide and 1,520 mm high. Its compact footprint remains relevant to everyday parking, but the CNG version's distinguishing question is how luggage fits around the fuel-system packaging. That deserves a separate check from whether the body fits the parking bay.
Related coverage includes the Grand i10 Nios starting-price report, the Aura starting-price report and the Aura warranty guide. Their figures and warranty terms belong to those models and should not be transferred to the Nios.
Official sources: Nios performance, feature matrix, Hy-CNG Duo highlights and official brochure.
