What is a pre-condition for environmentally-friendly and energy-saving driving?

The selected combination is correct because both checking the tyre inflation pressure regularly and performing vehicle maintenance regularly are essential practices for environmentally-friendly and energy-saving driving.

Regularly checking tyre pressure ensures that tyres are inflated to the optimal level, improving fuel efficiency and reducing emissions. Under-inflated tyres can increase fuel consumption and wear out faster, leading to more frequent replacements and additional environmental impact.

Performing regular vehicle maintenance is crucial as it ensures that the engine and all systems are functioning efficiently. Well-maintained vehicles consume less fuel, produce fewer emissions, and contribute to overall road safety.

In German traffic regulations, drivers are encouraged to maintain their vehicles adequately and operate them in a manner that reduces environmental impact, making these practices not just advisable but often necessary for compliance with environmental standards.