Fuel economy is shaped as much by how a car is driven and maintained as by the car itself. Two people in the same model can see noticeably different consumption figures, and most of the difference comes down to habits that are easy to change.
Driving style
Smooth, anticipatory driving uses less fuel than a stop-start style. Reading the road ahead — easing off early for a red light or roundabout rather than braking hard at the last moment — means the engine does less work overall. Higher speeds increase fuel consumption significantly due to aerodynamic drag, so keeping to a steady, legal speed on motorways rather than the top of the limit will noticeably improve economy on longer trips. In town, changing up through the gears as early as is comfortable, without labouring the engine, also helps.
Vehicle condition
Under-inflated tyres increase rolling resistance and fuel use, so keep pressures at the level recommended in your handbook or door sticker. A poorly maintained engine — old spark plugs, a clogged air filter, or overdue servicing — can also use more fuel than it should, so staying on top of routine maintenance pays for itself over time. Removing roof boxes, bike racks, or roof bars when they're not in use reduces drag, and clearing unnecessary weight from the boot means the engine isn't working harder than it needs to.
Planning and habits
- Combine short journeys where possible, since a cold engine uses more fuel per mile than a warm one.
- Use air conditioning sensibly — it does use extra fuel, but driving with windows open at speed can create more drag than running it.
- Plan routes to avoid unnecessary idling in traffic where a reasonable alternative exists.
- Switch off the engine rather than idling for extended waits, where it's safe and legal to do so.
None of these changes will transform a thirsty car into an efficient one overnight, but together they typically make a real, noticeable difference over weeks and months. The best part is that most of them cost nothing and simply come down to paying a bit more attention to how and when you drive.
