: Mutes the artificial engine noise pumped into the cabin through the speakers. Critical Security Access Codes

An OBDEleven device, VCDS HEX-V2 cable, or a Carista adapter.

Causes the speedometer and tachometer needles to sweep to their maximum values and back when you turn on the ignition, mirroring Audi RS models. 17 (Instruments)

Why it's better: Instantly know your car is locked without looking back.

Source: OBDeleven Apps list.

The A3’s LED headlights and taillights are highly programmable, allowing for personalized light signatures.

Some coding modules allow you to change the throttle characteristic to "Direct" for a more linear, "Audi Drive Select" feel. Audi A3 8V Hidden Features List 12- Vagcom BTPERFORMANCE

Stops the LED DRL from turning off (or "winking") when you activate the turn signal, allowing for a cleaner look.

The Audi A3 8V (2013–2020) is a masterpiece of German engineering, but like most modern vehicles, many of its best features are hidden behind software locks. Manufacturers often disable features to comply with local regulations, differentiate trim levels, or simplify production lines.