Several driving techniques reduce fuel consumption by minimizing engine strain and aerodynamic drag. Accelerate smoothly and gradually rather than with sudden, hard throttle inputs, which forces the engine to work harder and burns extra fuel. Maintain steady speeds on highways—constant velocity requires less fuel than frequent speed changes. Keep tire pressure at the manufacturer's recommended level; underinflated tires increase rolling resistance and reduce efficiency. Reduce idling time by turning off the engine when stopped for more than a few seconds. Avoid carrying unnecessary weight in the vehicle, and remove roof racks when not in use, as they increase aerodynamic drag. Plan routes efficiently to avoid congestion and excessive driving. Drive at moderate highway speeds; fuel consumption rises significantly above 50 mph as air resistance increases. Use cruise control on flat highways to maintain consistent speed without micro-adjustments. For manual transmissions, shift into higher gears as soon as safely possible. Anticipate traffic flow and brake gently to avoid wasting momentum. Regular maintenance—keeping the engine tuned, using the correct oil grade, and replacing air filters—also improves fuel economy. These techniques work because fuel efficiency depends on minimizing wasted energy through heat, friction, and unnecessary acceleration.