Alpina Blue Metallic ($0); Driver Assistance Package ($1,350 -- includes automatic high beams, lane departure warning, active blind spot detection, ceramic-finish control surfaces); Rearview Camera ($400); Smartphone Integration ($150).
Six-speed automatic with console shifter and steering-mounted buttons
Transmission and axle ratios (x:1)
The Alpina B7 accelerates effortlessly, like it's barely breaking a sweat, and then feels like it accelerates harder and harder as it goes through the gears. The power delivery is smooth yet potent everywhere on the tach. Won't spin the rear tires during a launch without brake torquing. The quickest run came with a smidge of tire chirp at launch and running in Sport + with stability control off and six-speed automatic in Manual mode (although it shifts for itself anyway).
The Alpina stops like a champion, probably due to the wide 21-inch Michelin Pilot Sport PS2s. You can feel the tires clawing at the pavement for traction. The brakes themselves are also phenomenal, as stopping distances were consistently short, with only a small amount of sponginess in the pedal for the last two attempts.
Skid pad: Grip is excellent and it's easy to keep the car on the cornering arc. Able to attain peak number with stability control on because Alpina-tuned Sport + mode has very high limits and so didn't intervene. Slalom: The steering is slower than expected and the car is quite heavy, yet the B7 proves deft through the slalom cones. The grip is excellent and the car seems to hunker down the harder you push it. Sport + mode allows a decent amount of sliding but then is very aggressive when it does intervene with abrupt throttle cut.