Alpina’s B4 has been caught testing ahead of next year’s release and is clearly spotted sporting Alpina’s traditional multi-spoke wheels, blue brake calipers and quad-outlet exhaust system. The body appears to be a production 4-series coupe, but we expect the Alpina B4 to be equipped with the same engine fitted to the B3– a twin-turbo [...]

Alpina’s B4 has been caught testing ahead of next year’s release and is clearly spotted sporting Alpina’s traditional multi-spoke wheels, blue brake calipers and quad-outlet exhaust system. The body appears to be a production 4-series coupe, but we expect the Alpina B4 to be equipped with the same engine fitted to the B3– a twin-turbo [...]