The Premium model comes standard with 18-inch alloy wheels, an S Line trim package (unique bumpers, side sills, fender badges and door sill inserts), automatic xenon headlights, LED running lights and taillights, foglights, automatic wipers, heated mirrors, a tilt-only sunroof (coupe only), tri-zone automatic climate control, leather upholstery, 10-way power front seats (with four-way driver lumbar support), split-folding rear seatbacks, Bluetooth phone connectivity, the MMI infotainment system (with a dash-mounted controller and a 6.5-inch display) and a 10-speaker sound system with a CD player, satellite radio and Audi's proprietary digital music interface. The Premium Plus adds auto-dimming mirrors, heated front seats and keyless ignition and entry (both optional on Premium), driver memory functions and a Bang & Olufsen sound system with 14 speakers for the coupe and 12 for the convertible.