You are driving a motor vehicle with a manual gearbox. When driving, what can cause avoidable noise pollution?

Your selections are correct. Avoidable noise pollution while driving a car with a manual gearbox can be caused by three things: accelerating heavily without reason, having a defective silencer (muffler), and driving at high speeds in low gears. These behaviors cause the engine to make louder, unnecessary noise. German traffic rules require drivers to avoid causing any avoidable noise, as it can disturb others and harm the environment. To prevent noise pollution, always accelerate smoothly, keep your vehicle and silencer well-maintained, and shift into higher gears when driving faster. This not only reduces noise but also helps save fuel and protect your car’s engine.