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The S3 has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The GTI doesn’t offer a remote starting system.
If the windows are left open on the S3 the driver can close all of them at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the GTI can only operate the windows from inside the vehicle, with the ignition on.
The Insurance Institute for Highway Safety (IIHS) conducts detailed tests on headlights for their range both straight ahead and in curves and to be certain they don’t exceed acceptable amounts of glare to oncoming drivers. The S3’s headlights were rated “Good” by the IIHS, while the GTI’s headlights are rated “Acceptable” to “Marginal.”
In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The S3 has standard headlight washers to keep headlight output high. The GTI doesn’t offer headlight washers.
The S3’s standard rear view mirror and optional side view mirrors have an automatic dimming feature. These mirrors can be set to automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The GTI has an automatic rear view mirror, but its side mirrors don’t dim.
The S3 has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning is only available on the GTI Autobahn.
The Audi S3 has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Volkswagen charges extra for Homelink® on the GTI.
The S3’s Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling the transmission and speed with the brake pedal. With its available fully controlled system, the driver just activates it and it parks autonomously, starting, stopping and changing direction automatically. The GTI Autobahn’s automatic parking system requires operating the brakes and transmission to safely park.