Bovensiepen 05 GT Review: The Ultimate BMW M5 Touring Upgrade? (2026)

The Bovensiepen 05 GT: A Subtle Yet Powerful Evolution

The automotive world is abuzz with the arrival of the Bovensiepen 05 GT, a car that promises to bridge the gap between raw performance and everyday usability. This vehicle is essentially a successor to the Alpina B5, a name now owned by BMW, but with a unique twist. It's a testament to the brand's ability to adapt and innovate while staying true to its roots.

A Subtle Transformation

At first glance, the 05 GT might appear as a minor variation of the BMW M5 Touring. However, a closer look reveals a meticulous transformation. The exterior styling, crafted by the renowned Frank Stephenson, is a masterpiece of subtlety. It tones down the M5's bravado while still exuding a sense of power. The new bumpers, skirts, and rear spoiler, adorned with the 'Bovensiepen' script, create a visually appealing and distinct look.

This attention to detail extends to the interior, where the 05 GT offers a blend of luxury and performance. The cabin remains largely unchanged, providing a familiar and comfortable environment for drivers. Yet, the subtle enhancements make all the difference, ensuring that the 05 GT stands out without being overbearing.

Under the Hood: A Tuned V8

Under the hood, the 05 GT boasts a retuned 4.4-liter S68 twin-turbo V8 engine. This modification results in a remarkable increase in power, pushing the output from 718bhp to a staggering 790bhp. The torque figures also see a boost, rising from 738lb ft to 811lb ft. These numbers are a testament to the brand's commitment to delivering exceptional performance.

The driveline modifications include an optimized air intake and a free-flowing exhaust system, further enhancing the engine's capabilities. Despite these changes, the electrical portion of the car remains untouched, ensuring a balance between power and efficiency.

Performance and Comfort

Bovensiepen's 05 GT is not just about raw speed; it's also about comfort. The suspension modifications are a key focus, aiming to provide a smooth and refined driving experience. This attention to comfort is a nod to the traditional Alpina buyer, who values both performance and a well-rounded driving experience.

The car's kerb weight of 2555kg is 5kg heavier than the regular M5 Touring, but this minor increase in weight doesn't compromise its agility. The 05 GT's top speed exceeds 190mph, and it accelerates from 0-62mph in under 3.6 seconds, showcasing its impressive performance credentials.

A New Era for Bovensiepen

The 05 GT's arrival signifies a new era for Bovensiepen. It demonstrates the brand's ability to create a product that is both desirable and attainable. By building upon the M5's foundation, Bovensiepen has crafted a vehicle that appeals to a wide range of enthusiasts, offering a unique blend of performance, comfort, and style.

In my opinion, the 05 GT is a testament to the brand's evolution. It showcases a thoughtful approach to customization, ensuring that the car remains true to its Alpina heritage while embracing a more accessible and modern identity. As Bovensiepen continues to forge its path, the 05 GT is a promising step forward, leaving us eager to see what the future holds for this exciting brand.

Bovensiepen 05 GT Review: The Ultimate BMW M5 Touring Upgrade? (2026)
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