Three Lines of Maths
1. Litres. Kilometres per month ÷ mileage. 1,000 km at 15 km/L is 66.67 litres.
2. Fuel cost. Litres × pump price. At ₹110.93 a litre that is ₹7,395 a month, ₹88,744 a year. Petrol price varies by state tax, so the same car costs ₹6,800 a month in Delhi and ₹7,767 in Hyderabad.
3. Running cost. Fuel plus a twelfth of your yearly service, wear and insurance. Divide by kilometres and you get cost per km, the number to compare with cabs or an EV.
Tank range is tank size × mileage. A 37 litre Fronx at 15 km/L runs about 555 km per fill, so 1,000 km a month is roughly two visits to the pump.
Three Habits Worth ₹1,000 a Month
Under inflated tyres cost 3 to 5% in mileage. Check cold, fill to the door sticker figure, and nitrogen is not required.
Shift by 2,000 rpm, lift off early for red lights and keep a steady 80 to 90 on the highway. This alone moves a Fronx from 13 to 16 km/L in traffic.
Ten minutes of idling a day burns about 3 litres a month. Combine errands, avoid peak hour where you can, and switch off at long signals.
Common Questions
How do I calculate my car's monthly fuel cost?
Divide the kilometres you drive in a month by your car's mileage to get litres, then multiply by the pump price. A Fronx doing 1,000 km a month at 15 km/L needs 66.7 litres. At ₹110.93 a litre in Bengaluru that is about ₹7,395 a month and ₹88,744 a year. The same car in Delhi at ₹102 costs ₹6,800 a month.
What is the real mileage of the Maruti Suzuki Fronx?
ARAI rates the 1.2L petrol manual at about 21.8 km/L and the 1.0L turbo at 20 to 21 km/L. In city traffic with the AC on, owners report 13 to 16 km/L for the 1.2L and 14 to 17 for the turbo. Highway runs do 18 to 22. This calculator defaults to 15 km/L, a fair city figure. Put in what your trip computer shows after a full tank.
How far does a Fronx go on a full tank?
The tank holds 37 litres. At 15 km/L that is about 555 km of city range, at 20 km/L about 740 km on the highway. Driving 1,000 km a month means roughly two fill ups a month.
How much does yearly service cost for a Fronx?
Maruti schedules service every 10,000 km or one year. Paid services at an authorised workshop run roughly ₹4,500 to ₹6,500 a year for oil, filters, inspection and alignment. Keep another ₹1,500 to ₹2,500 for wipers, fluids and the AC filter. The calculator lets you set both numbers.
What is cost per kilometre and why does it matter?
Cost per km is your total monthly running cost divided by kilometres driven. It is the honest way to compare a car with cabs, a second car or an EV. At ₹7,900 a month for 1,000 km the Fronx costs about ₹7.90 per km on fuel and service alone, before insurance, parking and depreciation.
Does this calculator store my data?
No. Everything is computed in your browser. The share link carries your inputs in the URL so you can reopen the same numbers later. The PDF is built on your device.
Fuel prices, service costs and mileage figures are indicative and change by city, dealer and driving style. This tool is for planning only. Check your trip computer and your workshop's price list for exact numbers.
