If you’ve noticed you’re filling up more often than usual, your car may be using more fuel than it should. A drop in fuel efficiency is a common issue, and while it can sometimes be down to driving habits or conditions, it can also point to underlying mechanical problems.
At D&G Autocare, we regularly help drivers identify the cause of poor fuel economy and get their vehicle running efficiently again.
Common Causes of Increased Fuel Consumption
1. Underinflated Tyres
Tyres with low pressure create more resistance on the road.
What it means:
Your engine has to work harder, which increases fuel usage.
2. Dirty or Clogged Air Filter
Your engine needs a clean airflow to run efficiently.
What it means:
A blocked air filter reduces airflow, causing the engine to burn more fuel than necessary.
3. Worn Spark Plugs
Spark plugs are responsible for igniting the fuel in your engine.
What it means:
If they’re worn or faulty, combustion becomes less efficient, leading to higher fuel consumption.
4. Faulty Oxygen Sensor
The oxygen sensor monitors the air-to-fuel ratio in your engine.
What it means:
If it’s not working properly, your engine may use more fuel than needed.
5. Driving Style
Frequent hard acceleration, braking, and short journeys can all impact fuel economy.
What it means:
Even small changes in driving habits can make a noticeable difference.
6. Engine or Fuel System Issues
Problems with fuel injectors, sensors, or engine components can affect efficiency.
What it means:
These issues often require professional diagnostics to identify.
7. Carrying Extra Weight
Driving with unnecessary weight in your vehicle increases fuel consumption.
What it means:
The heavier your car, the more fuel it needs to move.
Other Factors That Can Affect Fuel Economy
Sometimes, increased fuel usage isn’t down to a fault:
- Cold weather can reduce efficiency
- Stop-start traffic increases fuel consumption
- Using air conditioning adds extra load to the engine
When Should You Be Concerned?
You should get your car checked if:
- Fuel economy has dropped suddenly
- You notice reduced performance
- The engine management light is on
- The car feels less responsive
Can You Improve Your Fuel Efficiency?
Yes, some simple steps can help:
- Keep tyres properly inflated
- Drive smoothly and avoid harsh acceleration
- Keep up with regular servicing
- Remove unnecessary weight from your car
How D&G Autocare Can Help
At D&G Autocare, we offer:
- Full engine diagnostics
- Servicing to improve efficiency
- Checks on filters, spark plugs, and sensors
- Honest advice on improving fuel economy
We’ll identify the root cause and help you reduce your fuel costs.
Book a Vehicle Check Today
If your car is using more fuel than usual, don’t ignore it.
Contact D&G Autocare today to book an inspection and get your vehicle running efficiently again.
