Brezza 2026 Fuel Cost Calculator: Per KM and Per Month

Mileage figures on a brochure only tell you part of the story. What actually matters when you’re budgeting for a new Brezza is what it costs you per kilometre and per month, once you plug in your actual fuel price and how much you drive. This page gives you the exact formula and the numbers you need, so you can work out your own running cost in under a minute.

The Formula

The calculation itself is simple:

Cost per km = Fuel price ÷ Mileage (kmpl or km/kg)

Monthly fuel cost = Cost per km × Monthly kilometres driven

That’s it. The only two variables you need are your actual local fuel price and the ARAI-certified mileage for your specific Brezza variant, both listed below.

ARAI-Certified Mileage by Powertrain

These are ARAI-certified figures, tested under controlled laboratory conditions. Real-world mileage in actual city traffic, with AC running and a full load of passengers, typically comes in noticeably lower, often 10 to 20 percent below the certified number for petrol engines, and a bit less variance for CNG. If you want a more conservative estimate, especially for pure city driving, shave a few kmpl off the figure before you calculate.

Worked Examples (With Placeholder Fuel Prices)

Since petrol and CNG prices vary by state and change periodically, the table below uses placeholder prices rather than a fixed current figure. Swap in whatever your local pump is charging today.

To make this concrete: at a petrol price of Rs 105 per litre, the LXi/VXi manual works out to roughly Rs 4.98 per km, or about Rs 4,980 a month at 1,000 km of running. At a CNG price of Rs 75 per kg, the same 1,000 km on CNG comes to roughly Rs 2.79 per km, or about Rs 2,790 a month, meaningfully cheaper if you have reliable CNG access. Treat these as illustrative rather than exact, and always run your actual local prices through the formula above for a number you can budget against.

Why the CNG Variant Wins on Running Cost, But Not Always on Convenience

CNG’s per-km cost advantage is real and consistent, roughly 40 to 45 percent cheaper per kilometre than petrol at typical price ratios between the two fuels. But the calculation above only tells half the story. CNG refuelling stations aren’t as universally available as petrol pumps, particularly outside major cities, and refuelling queues at busy CNG stations can eat into time in a way petrol refuelling rarely does. If your daily driving is confined to a city with solid CNG infrastructure, like Delhi, Mumbai, or Ahmedabad, the running cost savings are close to unambiguous. If you’re doing frequent trips outside CNG-covered areas, the petrol variant’s convenience may outweigh the per-km saving.

Turbo vs Naturally Aspirated: Is the Mileage Difference Meaningful?

At the top end, the naturally aspirated manual’s 21.09 kmpl versus the turbo manual’s 20.47 kmpl works out to a difference of roughly 3 percent in fuel cost per kilometre, not a large enough gap to be the deciding factor on its own. If you’re choosing between the two engines, the turbo’s extra torque and highway performance are probably a bigger consideration than the marginal mileage difference, unless you’re doing extremely high annual mileage where even small percentage differences compound meaningfully over years of ownership.

Frequently Asked Questions