Maruti XL6 Mileage Comparison: Petrol vs CNG (2026)

The Maruti XL6 is a premium six-seater MPV perfect for urban families. It offers exceptional comfort and practicality. You can choose between petrol and factory-fitted CNG fuel options. The petrol engine gets a five-speed manual or six-speed automatic transmission. The CNG version comes exclusively with a five-speed manual gearbox. This Maruti XL6 mileage comparison matters for your daily running costs. Buyers wanting convenience often prefer the petrol automatic variant. Budget-conscious drivers focus on the excellent fuel efficiency of the CNG model.

Variant-Wise Price Difference

Before we proceed with the XL6 mileage comparison, it’s important to understand the premium you pay for the CNG over the petrol. The CNG option is only available on the Zeta variant. Let us look at the ex-showroom price difference.

There is a typical premium for the CNG factory fitment. You pay an extra Rs. 91,000 for the Zeta CNG variant.

Maruti XL6 ARAI Mileage Figures

Here are the lab-tested figures for the Maruti Suzuki XL6 mileage.

Disclaimer: XL6 ARAI mileage is not equivalent to real-world average. While ARAI figures are tested under laboratory-controlled conditions, real-road driving provides slightly varying statistics.

Maruti XL6 Mileage vs Competitors 

The Kia Carens petrol delivers a lower 15.7 km/l petrol average compared to the Maruti Ertiga and XL6, which achieves a slightly higher 20.51 km/l petrol figure. The XL6 and Ertiga also offers a factory-fitted CNG option with impressive 26.32 km/kg claimed efficiency.

If you are looking for a diesel powertrain in the same segment for frequent highway trips, exploring the Kia Carens Clavis mileage comparison highlights a robust 21.3 km/l on the diesel model and up to 16.66 km/l on the turbo-petrol.

Maruti XL6 Real-World Fuel-Efficiency (City vs Highway)

Below is the real-world average of the Maruti XL6 in both city and highway conditions:

In city driving conditions, the XL6 petrol manual typically delivers an average of around 12–14 km/l, whereas the CNG manual returns a significantly higher 20–22 km/kg.

On the highway, the gap continues to remain substantial. The petrol manual offers approximately 16–18 km/l, while the CNG variant stretches further with an impressive 24–26 km/kg.

• Real-world numbers differ from ARAI figures because lab tests exclude traffic and air conditioning.
• City traffic impacts petrol efficiency due to constant idling.
• Smooth driving styles significantly improve highway fuel efficiency.

• Do not forget that maintaining the right Maruti Suzuki XL6 tyre pressure is important to obtain the right mileage on every family journey.

   

XL6 Petrol vs XL6 CNG Comparison: Performance 

Beyond XL6 fuel efficiency, here is how the performance specs compare between petrol and CNG models:

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.

Petrol vs CNG Comparison: Cost

XL6 running cost

To understand the true running cost difference, we must use the Maruti XL6 real-world average mileage, not just ARAI figures.

For calculation purposes:

• Petrol price assumed at ₹100/litre

• CNG price assumed at ₹80/kg

   

When you factor in realistic driving conditions, the difference becomes substantial. The CNG variant of the XL6 costs nearly half per kilometre compared to petrol.

Your running cost with the Maruti XL6 petrol is roughly Rs. 6.60 per kilometre. The XL6 CNG running cost drops to just around Rs. 3.40 per kilometre. Even after accounting for slightly higher annual maintenance (like more frequent spark plug replacements), the CNG version remains significantly more economical for high-mileage users.

Monthly & 5-Year Fuel Cost Projection

Let us assume a realistic scenario of driving 1,500 km monthly. This will help us find your total fuel expenses with the Maruti XL6 in both petrol and CNG versions.

The savings with CNG are massive over a five-year period. You save roughly Rs. 4,900 every single month. You will recover the upfront Rs. 91,000 premium quickly. It takes just about 19 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 Maruti XL6, here are the things you need to consider before deciding between the powertrain options:

Boot Space Impact

• The CNG tank significantly reduces boot capacity.
• You can only accommodate soft bags with limited luggage flexibility.
   

Variant Limitation

• CNG is available only in the Zeta variant.

• You miss premium features such as ventilated leather seats.

   

Refuelling Convenience

• CNG infrastructure in India is still expanding.
• Long queues at CNG stations are common in metro cities.
   

Maintenance & Reliability

• CNG cars may require more frequent spark plug replacements.

• However, Maruti’s factory-fitted CNG kits are reliable and safe.

   

Resale Value

• Both petrol and CNG variants enjoy strong resale demand.

XL6 Petrol vs CNG: Who Should Buy Which

Here is a quick summary for your buying decision.

Choose Petrol if:

• You need the convenience of an automatic gearbox.
• You frequently travel with full luggage and six passengers.

• You prefer strong engine performance for highway overtakes.

   

Choose CNG if:

• Your daily commute exceeds 50 kilometres in heavy traffic.
• You want the absolute lowest daily running costs possible.
• Boot space is not your primary buying concern.