What increases the fuel consumption of your vehicle considerably?

The combination of heated seats and air-conditioning is correct because both have a significant impact on fuel consumption. Heated seats draw energy from the vehicle's electrical system, while air-conditioning uses the engine's power to cool the air, both leading to increased fuel consumption.

While heated seats can contribute a smaller amount to fuel consumption, air-conditioning can considerably reduce fuel efficiency, especially in stop-and-go traffic where the system has to work harder to cool the vehicle.

Understanding the effects of these items on fuel consumption is crucial for responsible driving and adherence to energy efficiency principles outlined in traffic regulations. By managing the use of these features, drivers can enhance fuel efficiency and reduce environmental impact, aligning with the German focus on sustainable driving practices.