Alpina has just pulled off the wraps on its F30 D3 at the 2013 Frankfurt show after showcasing its
F30 B3 at the Geneva show earlier this year. The next model up for the company will be the B4 Coupe Bi-Turbo.
Should the B4 Coupe Bi-Turbo come with the same powerplant as the B3, we will see it put down 410 HP / 443 LB-FT from a twin turbo inline 6 motor.
Thankfully, per usual, Alpina takes the understated and subtle approach for its cosmetic upgrades to the 4 Series, with a small front lip spoiler, color matched air breather vent trim, classic 21 spoke Alpina wheels, trunk spoiler, rear diffuser, lower suspension and quad exhaust tips.
Look for the Alpina B4 to make its debut at the upcoming 2014 Geneva auto show in March 2014.