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Hyundai Grand i10 Nios Mileage Comparison: Petrol vs CNG

02 Mar 2026
5 Mins read
Key highlights
  • 1
    Hyundai Grand i10 Nios mileage is great across all fuel types.
  • 2
    This Hyundai Grand i10 Nios mileage comparison shows huge savings.
  • 3
    Check the real-world average and fuel efficiency figures right here.
Outline

The Hyundai Grand i10 Nios is a premium urban hatchback. It offers exceptional comfort and everyday practicality. You can choose between refined petrol and factory-fitted CNG options. The petrol engine gets a manual or automatic transmission. The CNG version comes exclusively with a manual gearbox. This Hyundai Grand i10 Nios mileage comparison is important. It directly impacts your monthly running costs. Convenience seekers often prefer the petrol automatic variant. Budget-conscious drivers love the fuel efficiency of the CNG model.

 

Variant-Wise Price Difference

 

Before we proceed with the Hyundai Grand i10 Nios mileage comparison, we must check prices. It is important to understand the premium you pay for CNG. The CNG option is available on Magna, Sportz, and Asta variants. Let us look at the ex-showroom price differences.

 

VariantPetrol PriceCNG PricePrice Gap
Magna MT₹6.28 lakh₹7.22 lakh₹94,000
Sportz MT₹6.83 lakh₹7.72 lakh₹89,000
Asta MT₹7.40 lakh₹8.23 lakh₹83,000

 

There is a typical premium for the CNG factory fitment. You pay an extra amount for the CNG variants.

 

ARAI Mileage Figures

 

Here are the official lab-tested figures for the vehicle. These numbers showcase the claimed Hyundai Grand i10 Nios mileage.

 

Engine & TransmissionOfficial Mileage
Petrol Manual (MT)20.7 km/l
Petrol Automatic (AMT)20.1 km/l
CNG Manual (MT)27.3 km/kg

 

Disclaimer: ARAI mileage is not equivalent to real-world average. ARAI figures are tested under laboratory-controlled conditions. Real-road driving provides slightly varying fuel efficiency statistics.

 

Mileage vs Competitors

 

Car ModelPetrol MileageCNG Mileage
Hyundai Grand i10 Nios20.7 km/l27.3 km/kg
Tata Tiago20.09 km/l26.49 km/kg
Maruti Swift24.8 km/l32.85 km/kg

 

The Tata Tiago delivers a slightly lower petrol average. The Maruti Swift achieves higher numbers across all formats. The Hyundai Grand i10 Nios provides a highly balanced performance. It offers a great mix of power and fuel efficiency.

 

If you need more rear-seat space and highway stability while staying within the same family, the Hyundai i20 mileage comparison shows that you can still achieve nearly 20.0 km/l in a premium hatchback format.

 

Real-World Fuel Efficiency (City vs Highway)

 

Below is the real-world average of the Hyundai Grand i10 Nios. This covers both city and highway driving conditions.

 

ConditionPetrol (Manual)CNG (Manual)
City12-14 km/l19-21 km/kg
Highway16-18 km/l25-27 km/kg

 

In city driving conditions, the petrol manual delivers around 13 km/l. The CNG manual returns a significantly higher 20 km/kg. On the highway, the fuel efficiency gap remains quite substantial. The petrol manual offers approximately 17 km/l. The CNG variant stretches further with an impressive 26 km/kg. Real-world numbers differ from ARAI figures. Lab tests exclude heavy traffic and air conditioning. City traffic impacts petrol efficiency due to constant idling. Smooth driving styles significantly improve highway average figures.

 

To ensure your fuel efficiency does not drop, maintaining the right Hyundai Grand Nios i10 tyre pressure is important to obtain the right mileage.

 

Performance Comparison

 

Beyond fuel efficiency, let us look at the performance specs. Here is how the petrol and CNG models compare.

 

SpecPetrolCNG
Engine size1197 cc1197 cc
Power82 bhp68 bhp
Torque113.8 Nm95.2 Nm
TransmissionMT / AMTMT only

 

The real-world drivability difference is noticeable during highway overtakes. Petrol engines are less load sensitive when fully occupied. You will feel a power drop in CNG mode. This drop requires more frequent gear changes on steep inclines. The petrol engine is incredibly refined and silent.

 

Cost Comparison

 

Running Cost

 

To understand the true running cost difference, we need real data. We must use the real-world average, not just ARAI figures.

 

For calculation purposes:

 

  1. Petrol price assumed at ₹100 per litre.
  2. CNG price assumed at ₹80 per kg.

 

Fuel TypeReal-World MileageFuel PriceCost Per Km
Petrol (MT)15 km/l₹100/litre₹6.66 per km
CNG (MT)22 km/kg₹80/kg₹3.63 per km

 

When you factor in realistic conditions, the difference is substantial. The CNG variant costs nearly half per kilometre. Your running cost with petrol is roughly ₹6.66 per kilometre. The CNG running cost drops to just ₹3.63 per kilometre. Even after accounting for slightly higher annual maintenance, CNG wins. It remains significantly more economical for high-mileage users.

 

Monthly and Five-Year Projection

 

Let us assume you drive 1,500 kilometres every single month. This helps find your total fuel expenses over time.

 

TimeframePetrol CostCNG Cost
Monthly₹10,000₹5,445
Yearly₹1,20,000₹65,340
5-Year₹6,00,000₹3,26,700

 

The savings with CNG are massive over a five-year period. You save roughly ₹4,500 every single month. You will recover the upfront premium very quickly. It takes less than two years to cover this difference. After that, you enjoy pure savings on daily commutes.

 

Practical Ownership Tradeoffs

 

Whether you are buying a new or a used Hyundai Grand i10, here are the things you need to consider before deciding between the powertrain options:

 

  • Boot Space Impact


The CNG tank significantly reduces your available boot capacity. You can only accommodate soft bags with limited luggage flexibility. Hyundai now offers dual-cylinder tech to improve boot space slightly.

 

  • Variant Limitation


You might miss out on a few premium automatic features. However, Hyundai offers CNG in multiple well-equipped trims.

 

  • Refuelling Convenience

     

CNG infrastructure in India is still expanding rapidly. Long queues at CNG stations are common in metro cities. Petrol stations are available absolutely everywhere without any wait times.

 

  • Maintenance and Reliability


CNG cars may require more frequent spark plug replacements. However, Hyundai factory-fitted CNG kits are incredibly reliable and safe.

 

Who Should Buy Which

 

Here is a quick summary for your final buying decision.

 

Choose Petrol if:

 

  1. You absolutely need the convenience of an automatic gearbox.
  2. You frequently travel with heavy luggage and rear passengers.
  3. You prefer strong engine performance for quick highway overtakes.

     

Choose CNG if:

 

  1. Your daily commute exceeds 50 kilometres in heavy traffic.
  2. You want the absolute lowest daily running costs possible.
  3. Huge boot space is not your primary buying concern.

Frequently Asked Questions

Expand all
Does Hyundai Grand i10 Nios have cng?
Which Hyundai Grand i10 Nios variant have cng?
What is the Hyundai Grand i10 Nios cng price?
Does CNG reduce the overall engine performance?
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