DESIGN INTELLIGENCEJuly 18, 2026·Mary · DEPIX Design Intelligence

The Click: Why Touch Is the Sense Car Design Forgot - and Is Now Racing to Get Back

The best interface is the one you can use without looking at it. A knob you can find, grip and turn with your eyes still on the road is doing something a sheet of glass never can: it talks to your fingers. For about a decade the industry forgot this, melting every button and dial into one big touchscreen, and it is now scrambling to undo the damage. The story of why is really a story about the sense designers reach for last and users rely on most.

Of all the senses, touch is the only one that works with your eyes pointed somewhere else. A physical control lets you adjust by feel and muscle memory, so you can complete the task while keeping your eyes on the road. That is not nostalgia; it is bandwidth. A detent - the small click as a dial passes each setting - is a packet of information delivered straight to your fingertip, telling you where you are and confirming the change without a single glance. Premium switchgear treats that click as a superior haptic feel with customizable torque, because the feedback is the message.

And a good click is never an accident - it is engineered into the mechanism at the concept phase. The detent contour, the spacing and depth of the stops, the torque curve are all tuned to shape exactly how a control feels; change the detent ring and you change the entire character of the interaction. The knurling on a knob, the travel of a button, the damping as it returns - every bit of it is a deliberate sensory decision that builds trust and an emotional connection before a user can explain why. You feel "quality" through your fingers a fraction of a second before your eyes agree, and getting that right requires manufacturing precision that guarantees consistent tactile feedback unit after unit.

The touchscreen era optimised for the look - one clean, wipeable slab - and quietly deleted the feel. The bill came due in safety. A 2024 test found that touchscreen tasks took up to four times longer than physical buttons, forcing drivers to look away for more than a kilometre of road where buttons needed only 0.3km, at eyes-down angles as steep as 56 degrees versus 20. A comparative ergonomics study found the touchscreen felt more pleasant but left drivers feeling less in control - valence up, dominance down. A control you have to look at is a control that takes your eyes off the world.

So the industry is reversing hard. Physical controls are coming back as buyers tire of nested menus; Hyundai has publicly returned to buttons, and Euro NCAP will withhold its top safety score from cars without physical controls from 2026. But there is a trap in the comeback. Many are "solving" it with haptic feedback on flat glass - a buzz that simulates a click. A programmed buzz is better than dead glass, but it cannot fully replace a real detent, because a mechanical detent carries position - you feel where you are in the range - not just confirmation that something happened. Fake the click and you recover the acknowledgement but lose the map.

This is why it is a concept-phase decision and not a UI one. Whether a control can talk to your fingers is set in the mechanism - the detent geometry, the travel, the material of the knob - long before any screen is skinned. You cannot add real haptics at the end; by then you have either specified a mechanism with feel or a sheet of glass without it. The most human question an interface can answer - can I use this without looking? - is decided in the first architecture.

The lesson runs past cars to anything with a control. Touch is the sense we design for last and use most unconsciously, and it is the one that lets a tool vanish into muscle memory until using it feels like an extension of your hand. The best control isn't the one that looks cleanest in a render; it's the one your hand already knows in the dark. Design that in at the start, and the click does the talking.

Sources: