5 Driving Habits That Are Quietly Killing Your Car's Mileage

In an era of fluctuating fuel prices and increasing environmental awareness, maximising every drop of fuel is more than just a frugal habit, its a necessity. While many drivers blame the age of their vehicle, the reality is often found in small, cumulative habits. By identifying and correcting these five common mistakes, you can significantly reduce your trips to the pump and extend the lifespan of your vehicle. Meanwhile, make sure to join the 91Wheels WhatsApp Channel to never miss out on automotive updates.

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Aggressive On Pedal 

The most significant factor in fuel consumption is how you interact with the pedals. Aggressive driving (rapid acceleration and hard braking) is a massive energy waste. When you floor the acceleration pedal, the engine floods the combustion chamber with fuel to provide a burst of power. Conversely, when you slam on the brakes, you effectively "throw away" all the energy the engine just worked so hard to create.

Adopt a smooth flow mindset in order to solve this problem. Treat the accelerator with gradual pressure and use the cars momentum to your advantage. By coasting toward red lights and maintaining a steady speed, you can improve your highway mileage by up to 33% and city fuel economy by up to 10% to 15%.

Underestimating Tyres

Your tires are the only point of contact between your car and the road. If they are even slightly under-inflated, the footprint of the tire expands, creating more friction, known as rolling resistance. This forces the engine to burn more fuel just to keep the wheels turning. Check your tire pressure monthly using reliable tools to solve it. Always refer to the PSI levels listed on the sticker inside the driver's door or the owner's manual, rather than the max pressure printed on the tire sidewall. Properly inflated tires can improve gas mileage by about 3%.

Treating Car Like A Trunk

Weight is the enemy of efficiency. It takes energy to move mass, and many drivers carry around ghost weights like old gym bags, heavy tools, or seasonal gear that they haven't used in months. Furthermore, external attachments like empty roof racks or cargo boxes create immense aerodynamic drag, making the engine fight against the wind.

Solve this by performing a weekly weight audit. If you aren't using it today, take it out. Removing an unnecessary kgs can save you roughly 1% on fuel costs, which adds up significantly over thousands of miles.

Neglecting Routine Maintenance

Dust and heat are the two biggest challenges for cars in India. A clogged air filter restricts the engine's breathing, causing it to burn a richer mixture of more fuel, less air. Similarly, the technical precision of your components matters immensely. A faulty Oxygen (O2) sensor, for instance, can misread exhaust gases and cause the engine to over-inject fuel, tanking mileage by up to 40%. Furthermore, internal fluid dynamics play a role; using a high-viscosity 10W - 40 oil when your manufacturer recommends a thinner 5W-30 increases internal friction, consistently shaving 1% to 2% off your total efficiency. 

Strategic AC Utilisation

In the intense Indian summer, turning off the engine at a signal is often impractical. However, running the AC at maximum capacity creates a significant parasitic load on the engine. The compressor siphons power directly from the drivetrain, which is particularly noticeable in smaller-displacement engines.

Optimize your thermal load by setting the AC to a moderate 24 C rather than the minimum setting. Furthermore, manage your aerodynamics: at speeds below 45 km/h, open windows for ventilation. However, once you cross 80 kmph on the highway, the drag penalty of open windows exceeds the energy cost of the AC. At high speeds, always drive with windows up and the AC on.