Five driving habits that are secretly killing your car/ bike's fuel-efficiency

Fuel efficiency remains a key concern for vehicle owners in India, with buyers often evaluating cars and bikes based on mileage. However, actual fuel consumption is not determined by the vehicle alone. Driving habits play a significant role in real-world efficiency, often reducing mileage without the driver noticing. While manufacturers provide figures under controlled conditions, everyday usage differs, and repeated driving patterns can increase fuel consumption over time. In this article, let’s take a look at five driving habits that are secretly killing your fuel efficiency

1. Hard acceleration

Hard acceleration from a standstill is a common factor reducing fuel efficiency. Drivers often apply the throttle sharply when traffic begins to move, which increases fuel consumption despite offering quicker response. Abrupt throttle inputs require the engine to use more fuel to generate sudden power. This effect is more pronounced in city driving, where frequent stops and starts lead to repeated acceleration, raising overall fuel use.

In Indian conditions, with regular traffic signals, speed breakers and congestion, this pattern has a greater impact. Repeated acceleration followed by braking results in fuel loss and lower efficiency. A gradual increase in speed is more effective. Smooth throttle use and maintaining a steady pace help improve mileage over time.




2. Usage of incorrect gear

Incorrect gear usage is a common reason for reduced fuel efficiency, particularly in manual cars and motorcycles. In many cases, drivers do not adjust gears appropriately during routine city driving, leading to higher fuel consumption and added engine load. Driving in a lower gear at higher speeds increases engine revs and fuel use, while using a higher gear at low speeds puts the engine under strain and reduces efficiency. Both situations prevent the engine from operating within its optimal range.

This pattern is often seen in daily driving, where drivers remain in lower gears such as second or third for extended periods, delay upshifts, or continue in higher gears at low speeds. Such habits are more frequent in city conditions with uneven traffic flow. The effect is more pronounced in stop-and-go traffic, where frequent speed changes require timely gear shifts. Incorrect gear selection in these conditions not only reduces mileage but can also contribute to increased engine wear over time. Maintaining fuel efficiency requires shifting gears in line with the engine’s operating range. Timely upshifts and downshifts help ensure smoother performance and lower fuel consumption.

3. Idling unnecessarily

Extended engine idling is a common factor that lowers fuel efficiency, as vehicles continue to consume fuel even when stationary. Drivers often leave engines running at traffic signals, outside shops or during short stops, leading to unnecessary fuel use. Although idling may appear minor, especially when using air conditioning, it results in continuous fuel consumption without covering distance. Over time, repeated idling can significantly affect overall mileage.

The impact is more pronounced in cities such as Bengaluru and Delhi, where long signals and frequent congestion lead to extended waiting times. In stop-and-go traffic, idling combined with repeated acceleration further reduces efficiency and increases fuel usage. Prolonged idling can also contribute to higher emissions and engine wear. Switching off the engine during longer stops is a more efficient approach. If the vehicle is stationary for more than 30 to 60 seconds, turning off the engine can help save fuel, as restarting modern engines uses less fuel than continued idling.

4. Incorrect tyre pressure

Incorrect tyre pressure is a commonly overlooked factor that affects fuel efficiency, as even small pressure drops can increase fuel consumption. Many drivers do not check tyre pressure regularly unless a visible issue appears. Under-inflated tyres increase rolling resistance, requiring the engine to work harder and use more fuel, particularly in city driving with frequent acceleration. Over time, this results in lower overall mileage.

The impact is more pronounced in Indian conditions, where road surfaces, temperature variations and regular usage cause tyre pressure to fluctuate. Despite this, periodic checks are often ignored, leading to continued efficiency loss. Improper tyre pressure can also cause uneven wear and affect handling. Regular monitoring, at least once every two weeks, and maintaining manufacturer-recommended levels can improve efficiency. Properly inflated tyres reduce engine load, support better mileage and enhance driving stability.

5. Running the AC excessively

Excessive use of air conditioning can reduce fuel efficiency, particularly in smaller vehicles where the engine must handle additional load. While AC use is necessary in India’s climate, inefficient operation increases fuel consumption. Running the AC at very low temperatures or at maximum fan speed places greater demand on the engine, leading to higher fuel use, especially in city conditions with frequent stops. Over time, this affects overall mileage.

The impact is more pronounced in Indian driving conditions, where long commutes, traffic congestion and high temperatures result in extended AC usage. Drivers often operate the system at full capacity even when not required. Common practices include setting the temperature to the lowest level at startup and continuing high cooling levels after the cabin reaches a comfortable state, which adds to fuel consumption without added benefit. Using the AC more efficiently can help reduce this impact. Maintaining moderate temperature settings and adjusting fan speed as needed reduces engine load. Lowering AC intensity after achieving the desired cooling can improve fuel efficiency while maintaining comfort.