CPC Eco-Driving 2

Question 1

How can a driver use hills to their advantage for fuel economy?

Accepted Answer

Build momentum before an uphill, allow speed to reduce slightly on the climb, and use gravity on descents

Answer

Eco-driving on hills involves building speed slightly before an incline, allowing speed to drop a little on the climb (rather than using excessive throttle), and using the descent to recover speed with minimal throttle. This uses gravity rather than fighting it.

Question 2

What is the fuel saving potential of good eco-driving techniques?

Accepted Answer

5-15% reduction in fuel consumption

Answer

Consistent application of eco-driving techniques can typically save 5-15% on fuel consumption. For a vehicle doing 100,000 miles per year at 8 mpg, a 10% saving would be approximately 1,250 litres of diesel — a significant cost and environmental benefit.

Question 3

Why is it important to avoid excessive engine idling from an eco-driving perspective?

Accepted Answer

An idling engine burns approximately 1-2 litres per hour of fuel while doing no useful work

Answer

An HGV engine idling typically burns 1-2 litres of diesel per hour while producing no useful work. Over a year, unnecessary idling can waste thousands of litres. Anti-idling technology and driver awareness can significantly reduce this waste.

Question 4

How does vehicle weight affect fuel consumption?

Accepted Answer

Every additional tonne increases fuel consumption — reducing unnecessary weight improves economy

Answer

Every additional tonne of vehicle weight increases fuel consumption, particularly during acceleration and hill climbing. Drivers should ensure unnecessary items are not carried, trailers are not overloaded, and empty return trips are avoided where possible.

Question 5

What role does the driver's attitude play in fuel-efficient driving?

Accepted Answer

A calm, patient driving style leads to smoother driving, better anticipation, and significantly lower fuel consumption

Answer

A calm, patient attitude promotes smoother acceleration, better anticipation of traffic conditions, less aggressive braking, and more consistent speeds — all of which reduce fuel consumption. Stress and impatience lead to aggressive driving patterns that waste fuel.

UK Driver CPC Practice Test

UK Driver CPC Practice Test

CPC Eco-Driving 2