How to Calculate Fuel & Toll Costs for Long Road Trips in India

Accurate financial budgeting is the key to a stress-free road trip. Whether you are driving an SUV, sedan, or hatchback across state borders, here is how to calculate exact travel costs.

1. Calculating Highway Fuel Cost

Formula: (Total Roundtrip Distance in km ÷ Car Mileage in km/L) × Average Fuel Price per Liter

Example: 600 km roundtrip drive in a petrol SUV yielding 12 km/L with petrol priced at ₹100/L:

(600 ÷ 12) × 100 = 50 liters × ₹100 = ₹5,000.

Tip: Mountain driving (climbing ghats in lower gears) increases fuel consumption by 20-25%. Always add a 20% fuel cushion.

2. Estimating FASTag Toll Expenses

All national highways in India enforce electronic FASTag toll collection.

• Average toll cost on 4-lane National Highways: ₹1.80 to ₹2.20 per km.

• Expressway toll rates (Yamuna / Delhi-Mumbai Expressway): ₹2.50 to ₹3.10 per km.

• Ensure your FASTag wallet has a minimum balance of ₹1,500 before starting a multi-state drive to avoid blacklisting penalty fees.