German tuner Alpina is readying an update for its B3 based on the BMW 3-Series, and a prototype has been spotted. The prototype is for the B3 Touring wagon, and out shots come just weeks after a prototype for the B3 sedan was spotted. The update will be the second for the current generation of Alpina’s B3. The previous update was made for the 2023…German tuner Alpina is readying an update for its B3 based on the BMW 3-Series, and a prototype has been spotted. The prototype is for the B3 Touring wagon, and out shots come just weeks after a prototype for the B3 sedan was spotted. The update will be the second for the current generation of Alpina’s B3. The previous update was made for the 2023…