w212 avantgarde
#2
MBWorld Fanatic!
In the US there is Luxury and Sport. The Sport has an AMG Suspension, Sport Grille (Big Star) with flat hood badge, AMG Body Styling and Sport Interior (silver trim gauges). The Luxury has the Classic Grille with Standup Star hood ornament, no body kit and the standard interior. The Avantgarde is similar to the Sport and the Luxury is similar to the Elegance.
#4
MBWorld Fanatic!
The US Sport has the AMG Suspension and Drilled front Brake Rotors. The Luxury has the "softer" suspension and solid brake rotors. Not sure if you consider those "performance changes". The Engines remain the same.