Eco-Friendly Driving and Vehicle Loading Flashcards

What does a catalytic converter do in a vehicle's exhaust system?

Answer: It reduces harmful exhaust emissions by converting toxic gases into less harmful substances

A catalytic converter uses chemical reactions to convert harmful pollutants such as carbon monoxide and hydrocarbons into less harmful carbon dioxide and water.

What is the main environmental benefit of driving an electric vehicle (EV) in the UK?

Answer: EVs produce no tailpipe emissions, reducing local air pollution

Electric vehicles produce no direct exhaust emissions at the point of use, which significantly reduces local air pollution in towns and cities.

You are about to drive a fully loaded estate car. The load fills the boot up to the rear window. What should you adjust?

Answer: The headlights to compensate for the change in vehicle attitude

A heavy boot load causes the front of the vehicle to rise, angling the headlights upward and dazzling oncoming drivers, so headlight aim must be adjusted.

Travelling at 70 mph instead of 50 mph on a motorway increases fuel consumption by approximately how much?

Answer: Around 25%

Aerodynamic drag increases with the square of speed, meaning travelling at 70 mph instead of 50 mph uses roughly 25% more fuel.

What should you do if your vehicle's 'check engine' or emissions warning light illuminates while driving?

Answer: Have the vehicle inspected by a qualified mechanic as soon as possible

A check engine or emissions warning light indicates a fault that could increase harmful emissions or damage the engine, and the vehicle should be checked promptly.

Which action should you take to get the best fuel economy from a long motorway journey?

Answer: Use cruise control to maintain a steady, legal speed

Cruise control maintains a constant speed without the small speed fluctuations of manual throttle use, resulting in lower average fuel consumption on motorways.