Noticing that a car is suddenly using more fuel than it normally does can be frustrating, particularly when fuel costs are already a significant expense for motorists. SC Performance explains some of the common reasons behind increased fuel consumption and what drivers should consider if their vehicle's economy changes.
One of the simplest causes can be tyre pressure. Under-inflated tyres create greater rolling resistance, meaning the engine has to work harder and use more fuel. Checking tyre pressures regularly and keeping them at the manufacturer's recommended level can help maintain efficiency.
Driving habits can also have a noticeable impact. Frequent short journeys, harsh acceleration, heavy braking and prolonged idling can all contribute to higher fuel consumption. Carrying unnecessary weight or regularly using a roof box can have an effect too.
Mechanical issues may also be responsible. Problems with components such as air filters, spark plugs, sensors or the fuel system can affect how efficiently an engine operates. Warning lights, poor acceleration or unusual engine behaviour alongside increased fuel consumption should be professionally investigated.
Changes in driving conditions can make a difference as well. Heavy traffic, colder weather and increased use of air conditioning can all affect fuel economy.
SC Performance recommends paying attention to changes in a vehicle's normal behaviour. If fuel consumption has noticeably increased without an obvious explanation, having the vehicle professionally assessed can help identify potential issues and ensure it continues to perform as efficiently as possible.
