Vehicle & Travel4 min read
Average Speed Formula and Why 60 Out, 40 Back Is Not 50
Average speed is total distance ÷ total time: 150 km in 3 hours is 50 km/h. Learn why driving 60 out and 40 back averages 48 km/h, not 50.
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16 articles
- Vehicle & Travel4 min read
Bike vs Car: Running Cost Per Km on a Trip
A 55 km/l motorcycle costs about ₹3.68 per km all-in against ₹17.30 for the car in our example, so a 600 km trip is ₹2,207 versus ₹10,380.
- Vehicle & Travel4 min read
What Your Car Really Costs Per Kilometre
Fuel is only under 40% of what a car costs per km. With ₹100 petrol at 15 km/l, the full running cost comes to about ₹17.3 per km at 12,000 km a year.
- Vehicle & Travel4 min read
Engine Displacement: Calculate It From Bore and Stroke
Displacement = π ÷ 4 × bore² × stroke × cylinders. An 8 cm bore, 9 cm stroke, 4-cylinder engine sweeps 1,809.56 cm³, about 1.8 litres.
- Vehicle & Travel5 min read
EV Charging Cost: Why You Pay for More Than the Battery Gets
Adding 40 kWh to a battery at 90% efficiency draws about 44.4 kWh from the grid, so at ₹9 per unit the charge costs around ₹400. Here is the working.
- Vehicle & Travel5 min read
EV Range Estimate: Usable kWh Divided by kWh per km
A 50 kWh usable battery at 0.16 kWh/km gives about 312.5 km. See how speed, AC and cold cut that figure and how to plan a trip with a safe margin.
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