Safe and Economical Driving
Study all Safe and Economical Driving questions for the Spanish DGT theory test.
Reviewed on 9 Oct 2026
46 questions
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- Applying economical driving can reduce fuel consumption by up to approximately:
- Which of the following is NOT a benefit of economical driving?
- For efficient driving, how should the engine be started?
- In a petrol engine, at what engine speed is it best to change to a higher gear to save fuel?
- Which of these practices helps save fuel when changing gear?
- When you lift your foot off the accelerator and let the vehicle coast in gear above 1,000 rpm, fuel consumption:
- During a stop, when is it advisable to switch off the engine to save fuel?
- For efficient and safe driving, the most advisable approach to speed is:
- Above roughly what speed does the vehicle start to consume and pollute significantly more?
- At what temperature should the cabin be kept so the air conditioning does not increase consumption excessively?
- Which accessory increases air resistance and therefore fuel consumption at high speeds?
- Driving at speed on an interurban road with the windows down:
- Regarding tyres, what directly affects fuel consumption?
- Regular vehicle servicing (filters, spark plugs, tyre pressure):
- Why does a vehicle consume more fuel driving in the city than on the open road, despite going slower?
- Why is going downhill in neutral NOT a safe fuel-saving measure?
- Using a fuel other than the one recommended by the manufacturer to save money:
- What does a vehicle's Start-Stop system do?
- A vehicle's "Eco" mode allows you to:
- What are the three pillars of preventive driving?
Questions people find hardest
Share of answers that were wrong, from learners who have answered each question at least 20 times.
- What are the Low-Emission Zones (ZBE) that local councils can establish? 23% wrong
- Even with correctly adjusted mirrors, to make sure no vehicle is in the blind spot before changing lanes you must: 20% wrong
- Why does a vehicle consume more fuel driving in the city than on the open road, despite going slower? 14% wrong
Frequently asked questions
- Applying economical driving can reduce fuel consumption by up to approximately:
- 20% Efficient driving can save up to 20% of fuel, as well as reducing emissions and vehicle wear.
- Which of the following is NOT a benefit of economical driving?
- Greater engine power and speed Economical driving reduces consumption, emissions, and vehicle wear, and increases safety and comfort. It does not increase engine power.
- For efficient driving, how should the engine be started?
- Without pressing the accelerator The engine should be started without pressing the accelerator. With petrol engines you can set off immediately; with diesel engines you should wait a few seconds.
- In a petrol engine, at what engine speed is it best to change to a higher gear to save fuel?
- Between 2,000 and 2,500 rpm In petrol engines it is best to change gear between 2,000 and 2,500 rpm; in diesel, between 1,500 and 2,000 rpm. Shifting up early reduces consumption.
- Which of these practices helps save fuel when changing gear?
- Use high gears as early as possible, skipping gears if possible To save fuel it is best to use high gears as early as possible and, when possible, skip gears (from 2nd to 4th, or 3rd to 5th).