At the heart of the new Alpina B3 and B4 GT models lies an enhanced version of BMW's twin-turbocharged inline-six engine. With an increase of 34 horsepower, these vehicles now produce an impressive 529 horsepower and 538 pound-feet of torque. This substantial power boost is primarily achieved through revised engine mapping, ensuring that these Alpina models deliver a thrilling driving experience.

This power increase allows the B3 GT sedan to accelerate from 0 to 62 mph in just 3.4 seconds, a slight but significant improvement over the standard model. The B3 GT Touring (wagon) and the B4 GT Gran Coupe are only marginally slower, completing the same sprint in 3.5 seconds. Power is distributed to all four wheels via a ZF eight-speed automatic transmission, ensuring smooth and responsive gear shifts.

While the performance enhancements are certainly impressive, Alpina's dedication to sophisticated design and luxury is equally noteworthy. The B3 GT and B4 GT maintain the classic Alpina aesthetic, characterized by subtle yet distinctive modifications. Up front, small canards and a splitter provide a hint of the vehicle's capabilities, while a redesigned diffuser and new black exhaust tips at the rear complete the sporty look.

Alpina continues to offer its specific shades of blue and green, which have become a hallmark of the brand. However, customers can also choose from a wide range of BMW Individual colors, allowing for a high degree of personalization. Regardless of the exterior color, Alpina badging is prominently displayed, and the interior features GT script in Alpina's iconic Oro Tecnico, reinforcing the exclusive nature of these models.

One of the standout features of the B3 GT is its availability in both sedan and wagon (Touring) trims. This versatility allows buyers to enjoy high-performance driving dynamics in a practical and stylish package. For those who prefer the look of the larger grille, the B4 GT Gran Coupe offers the same impressive power in a sleek and elegant format.

For BMW enthusiasts seeking a vehicle that combines luxury, practicality, and high performance, the new Alpina B3 and B4 GT models present a compelling choice. With their powerful engines, sophisticated design, and a range of customization options, these cars offer an enticing alternative to the full-fat M Competition models. Though exclusive to Europe, these new Alpinas are sure to make a significant impact on the market, continuing the legacy of refined performance that Alpina is renowned for.