The tiny fuel filler flap arrow on your dashboard you should know

It is 7.42 am, the petrol station is nearly empty, and you pull in with a hire car, a relative’s vehicle or a model you rarely drive. You stop on the wrong side of the pump, glance at the hose and then hesitate: should you drive around, move forwards, reverse, or attempt an awkward manoeuvre while other motorists watch? We have all experienced this brief uncertainty, especially when the fuel gauge is close to empty and a queue is beginning to form behind us. Yet the answer is already in front of you, on the dashboard. A tiny arrow beside the fuel-pump symbol shows which side the fuel filler flap is on. It is a subtle but remarkably helpful detail. You will never look at it in quite the same way again.

The tiny arrow many drivers spot too late

On the instrument panel, the fuel-pump symbol tends to catch your attention only when the low-fuel warning light comes on. Beside it is a small arrow pointing left or right, revealing the position of the fuel filler flap. It is that simple, although many motorists remain unaware of it for years. Some look for a button near the footwell, lean towards the door, check the mirror or walk around the vehicle. Meanwhile, the arrow stays quietly in the same place. It does not show where the pump is: it indicates the side of the car on which you need to open the fuel tank.

This often happens with courtesy vehicles. Following a service, accident or breakdown, you collect an unfamiliar car and arrive at the petrol station with the gauge almost empty. Camille, 34, says she discovered the trick after trying to position her small car three times: “I thought the hose would be too short, so I made an absurd manoeuvre in front of everyone.” At many modern pumps, the hose can indeed reach the other side of the vehicle. However, it is not always convenient and may mean pulling the hose over the bodywork. A few seconds of attention can prevent this little performance.

This indicator appears on a large proportion of cars sold over the past few decades, although it is not completely universal. The logic behind it is clear: fuel filler flap positions differ between manufacturers, generations and vehicle designs. Some are on the right and others on the left; there is no absolute international standard. Manufacturers therefore introduced this visual cue to reduce hesitation. It is the sort of detail that seems obvious once you know it. To be honest, no one really needs it every day. But when you are driving an unfamiliar car, the arrow suddenly becomes far more valuable.

The fuel filler flap arrow: check it before choosing a pump

Before entering a petrol station, take a moment to look at the dashboard rather than waiting until you are alongside a pump. Find the fuel symbol and follow the arrow: left means a left-hand fuel filler flap, while right means a right-hand one. This is especially useful at narrow, busy stations or where the ground markings have faded. You can select the appropriate lane immediately and pull in naturally. On some vehicles, the warning light may be difficult to see in bright sunshine; a quick look beneath the steering wheel’s shade, or after switching on the ignition, is often enough.

The most common mistake is to confuse the arrow with the side of the nozzle shown on the icon. On some dashboards, the fuel-pump pictogram includes a stylised hose positioned on either the right or left, which can create uncertainty. When present, the dependable reference point is the tip of the arrow. If you cannot see one, do not panic: inspect the car before getting out, use the mirror, or open the flap from inside if the model has a dedicated release. Never force a flap that will not open; on certain cars, it unlocks only once the central locking has been released.

This small habit does more than make things more comfortable: it also keeps access to the pumps moving, particularly when everyone is trying to find a space quickly. It avoids sudden reversing, lane changes and that slightly embarrassing moment when you realise the filler cap is on the opposite side.

“The best features are often the ones we do not notice until the day they spare us an inconvenience,” observes a frequent long-distance driver.

Keep these straightforward pointers in mind:

• an arrow pointing left means the fuel filler flap is on the left;
• an arrow pointing right means the fuel filler flap is on the right;
• no arrow means you should check visually before pulling in.

A dashboard detail that transforms everyday journeys

The little arrow next to the fuel gauge also says something about our relationship with cars: every day, we use dozens of functions without necessarily understanding the symbols that accompany them. A tyre-pressure warning, temperature alert, seat-belt indicator or this unobtrusive fuel filler flap marker can appear secondary until the precise moment it makes life easier. There is nothing dramatic about it, simply practical intelligence designed for ordinary tasks: setting off on holiday, taking an unexpected detour, borrowing a car at the last minute or filling up in the rain.

The next time you get into a vehicle that is not your own, this check may become almost automatic. A glance at the gauge, a look towards the arrow, then the right lane at the petrol station. This small piece of knowledge is easy to pass on: to a child watching from the passenger seat, a colleague using a company car, or a loved one who has just bought their first vehicle. It often prompts the same response, somewhere between surprise and amusement: “How did I never notice that?” The most useful tips can sometimes fit into just a few millimetres, right behind the steering wheel.