

Toyota Glanza Mileage Comparison: Petrol vs CNG
- 1Real-world Toyota Glanza mileage can hit up to 30 km/kg on CNG fuel.
- 2The Toyota Glanza CNG price begins at exactly ₹8.17 lakh.
- 3Recoup your initial CNG investment within 2 years.
The Toyota Glanza is a brilliant premium five-seater family hatchback. It offers exceptional comfort and practicality for daily city commutes. You can choose between petrol and factory-fitted CNG fuel options. The petrol engine gets a five-speed manual or automatic transmission. The CNG version comes exclusively with a five-speed manual gearbox. This Toyota Glanza mileage comparison matters for your running costs. Buyers wanting convenience often prefer the petrol automatic transmission variant. Budget-conscious drivers focus on the excellent fuel efficiency of CNG.
Variant-Wise Price Difference
We must understand the initial premium for the CNG option. The factory CNG kit is available on S and G. Let us look at the ex-showroom price difference for S.
| Variant | Petrol Price | CNG Price | Price Gap |
| S MT | ₹7.34 lakh | ₹8.17 lakh | ₹0.83 lakh |
There is a standard premium for the CNG factory fitment. You pay an extra ₹0.83 lakh for the S CNG. This extra cost brings immense long-term savings on daily drives.
Toyota Glanza ARAI Mileage Figures
Here are the standard lab-tested figures for Toyota Glanza mileage.
| Engine & Transmission | Official Mileage |
| Petrol Manual (MT) | 22.35 km/l |
| Petrol Automatic (AMT) | 22.94 km/l |
| CNG Manual (MT) | 30.61 km/kg |
Please note that Glanza ARAI mileage is not completely realistic. Lab tests occur under highly controlled and ideal driving environments. Real-world traffic conditions will naturally alter these fuel efficiency statistics.
Efficiency Against Market Rivals
| Car Model | Petrol Mileage | CNG Mileage |
| Toyota Glanza | 22.35 km/l | 30.61 km/kg |
| Hyundai i20 | 20.35 km/l | Not Available |
| Maruti Baleno | 22.35 km/l | 30.61 km/kg |
The Hyundai i20 delivers a slightly lower claimed petrol average. It falls behind the highly efficient Toyota and Maruti hatchbacks. The Glanza shares its mechanics closely with the Maruti Baleno. Both offer an impressive 30.61 km/kg claimed CNG efficiency figure.
The Toyota Glanza petrol delivers a fantastic average for a spacious hatchback. However, buyers who prefer a compact sedan profile will find the Maruti Dzire mileage comparison highly appealing, as it pushes the boundaries further with 25.71 km/l on petrol and an incredible 33.73 km/kg on CNG.
Real-World Averages for City and Highway
Below is the real-world average of the Toyota Glanza hatchback.
| Condition | Petrol (Manual) | CNG (Manual) |
| City | 16-17 km/l | 22-24 km/kg |
| Highway | 20-22 km/l | 28-30 km/kg |
In city driving conditions, the Glanza petrol manual performs well. It typically delivers an average of around 16 km/l locally. The CNG manual returns a significantly higher 23 km/kg average. On the highway, the efficiency gap continues to remain substantial. The petrol manual offers approximately 21 km/l of steady efficiency. The CNG variant stretches further with an impressive 29 km/kg.
Real-world numbers differ from ARAI figures due to heavy traffic. City traffic impacts petrol efficiency due to constant engine idling. Smooth driving styles significantly improve highway fuel efficiency for all.
Along with regular servicing, maintaining the right Toyota Glanza tyre pressure is important to obtain the right mileage.
Petrol vs CNG: Performance Comparison
Beyond Glanza fuel efficiency, here is how performance specs compare.
| Spec | Petrol | CNG |
| Engine size | 1197 cc | 1197 cc |
| Power | 88.5 bhp | 76.4 bhp |
| Torque | 113 Nm | 98.5 Nm |
| Transmission | MT / AMT | MT only |
The real-world drivability difference is noticeable during quick highway overtakes. Petrol engines are less load-sensitive when fully occupied with passengers. You will feel a slight power drop in CNG mode. This drop requires more frequent gear changes on steep inclines.
Petrol vs CNG: Cost Comparison
Running Cost Analysis
To understand the true running cost difference, we must use the real-world average mileage, not just official figures.
For calculation purposes:
- Petrol price assumed at ₹100 per litre.
CNG price assumed at ₹80 per kilogram.
| Fuel Type | Avg Real-World Mileage | Fuel Price | Cost Per Km |
| Petrol (MT) | 18 km/l | ₹100/litre | ₹5.55 per km |
| CNG (MT) | 26 km/kg | ₹80/kg | ₹3.07 per km |
When you factor in realistic driving conditions, the difference shows. The CNG variant of the Glanza costs nearly half per kilometre. Your running cost with the Toyota Glanza petrol is ₹5.55. The CNG running cost drops to just around ₹3.07. The CNG version remains significantly more economical for high-mileage users.
Monthly and Long-Term Fuel Cost Projection
Let us assume a realistic scenario of driving 1500 kilometres. This helps find your total fuel expenses with the Toyota Glanza.
| Timeframe | Petrol Cost | CNG Cost |
| Monthly | ₹8,333 | ₹4,615 |
| Yearly | ₹1,00,000 | ₹55,380 |
| 5-Year | ₹5,00,000 | ₹2,76,900 |
The savings with CNG are massive over a five-year period. You save roughly ₹3,718 every single month over standard petrol. You will recover the upfront ₹0.83 lakh premium quite quickly. It takes just about twenty-two months to cover this difference. After that, you enjoy pure savings on your daily commutes.
Practical Ownership Tradeoffs
Whether you are buying a new or a used Toyota Glanza, here are the things you need to consider before deciding between the powertrain options:
Luggage Space Impact
The CNG cylinder significantly reduces your available rear boot capacity. You can only accommodate soft bags with limited luggage flexibility.
Refuelling Convenience
Petrol infrastructure in India is incredibly vast and easily accessible. Long queues at CNG stations are quite common in metro cities.
Maintenance and Reliability
CNG cars may require more frequent spark plug replacements routinely. However, Toyota factory-fitted CNG kits are incredibly reliable and safe.
Resale Value
Both petrol and CNG variants enjoy strong secondary resale demand.
Petrol vs CNG: Who Should Buy Which
Here is a quick summary for your buying decision today.
Choose Petrol if:
- You need the convenience of a brilliantly smooth automatic gearbox.
- You frequently travel with full luggage and rear seat passengers.
You prefer strong engine performance for high-speed highway overtakes.
Choose CNG if:
- Your daily commute exceeds fifty kilometres in heavy city traffic.
- You want the absolute lowest daily running costs possible today.
- Rear boot space is not your primary family buying concern.
Frequently Asked Questions
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