Which of the following can help reduce fuel consumption?

• A. Changing filters regularly
• B. Always using gears in sequence
• C. Keep tyres under-inflated
• D. Keeping the rev counter in the amber band

Answer: (A)

Fuel efficiency is helped by keeping the engine and its air intake running smoothly. Regularly changing filters keeps the air and fuel paths clean, so the engine can breathe properly and deliver the right fuel–air mix without working harder than it needs to. When filters become dirty, airflow is restricted and the engine has to work harder, which wastes fuel. So this maintenance step directly supports more efficient combustion and lower fuel use.

Keeping tyres under-inflated raises rolling resistance, meaning the engine must expend more energy to move the vehicle, which increases fuel consumption and wears tyres faster.

Staying in the amber band on the rev counter means the engine is running at higher revolutions, which generally uses more fuel than keeping revs lower.

Always using gears in sequence isn’t a reliable way to cut fuel use; fuel savings come from using the most appropriate gear for the speed and load to keep revs and engine effort as low as possible.