Models equipped with navigation get a revised iDrive controller with an integrated touchpad.

The Gran Turismo carries the largest engine in the 3 Series, a turbocharged 3-liter six-cylinder with 300 horsepower. You also get an eight-speed automatic transmission and BMW’s xDrive all-wheel drive system.

Standard equipment is shared with the 335i sedan, including power front seats with driver memory, adaptive and auto-leveling xenon headlamps, 18-inch alloy wheels, a sunroof, HD radio and wood or aluminum interior trim.

You can upgrade to one of the three optional trim lines:

• Luxury: Adds chrome grille bars and exhaust tips, multi-spoke wheels and specific interior trim.
  
  
• Sport: Carries a sport suspension, double-spoke wheels, gloss black grille bars and sporty interior accents.
  
  
• M Sport: Includes upgraded wheels and suspension, an aerodynamic body kit, a sport steering wheel, sport seats and M Sport interior trim.

Any Gran Turismo can be outfitted with a variety of option packages:

• Premium: Features leather seating with power lumbar controls and keyless access.
• Technology: Packs a hard-drive-based navigation system, a high-resolution 8.8-inch dash display, integrated smartphone apps and a head-up display.
• Driver Assistance: Gets you a rearview camera and front and rear parking sensors.
• Driver Assistance Plus: Expands on the above package with side- and top-view cameras, blind-spot monitoring, lane-departure warning, a driver alertness monitor and a speed limit info display.
• Cold Weather: Adds heated front and rear seats and a heated steering wheel.
• Dynamic Handling: Bundles the M Sport’s sport suspension with variable-ratio steering.

Available individually are features such as adaptive cruise control, an automated parallel parking system and a Harman Kardon sound system.