Currently reading: Bovensiepen Zagato: Alpina founder reveals 603bhp coachbuilt GT

Bovensiepen family launches a new coachbuilding outfit with a Zagato-styled Bentley Continental GT rival

The Bovensiepen family, founders of legendary German BMW tuning house Alpina, have launched their own coachbuilding business with the unveiling of a new 600bhp super-GT at the Villa d'Este Concorso d'Eleganza.

With Alpina now owned by BMW itself, the family is shifting its focus to become "a manufacturer of outstanding automobiles that embody the ambition of fine driving". 

The first project from the new outfit – named simply Bovensiepen – is an imposing, BMW M4-based grand tourer called the Zagato, in reference to the famous Italian design house responsible for its styling.

Zagato has previously collaborated with Aston Martin, Ferrari, Bentley, Maserati and Alfa Romeo, and its first effort for Bovensiepen is described as "a harmonious composition of individual design" that "features and bears the unmistakable signature of the traditional Milanese design studio".

It's said to take more than 250 hours to build the Zagato, of which production will be "strictly limited" - although no precise figure has been given.

Pricing and availability will be given at the end of this year, ahead of deliveries beginning in summer 2026. 

Each car can be, Bovensiepen promises, "as unique as its owner", with extensive personalisation options available for the interior and exterior. 

It's extensively differentiated from the BMW on which it's based by a totally bespoke treatment at the front and rear, a reshaped bonnet, a revised side profile and Zagato's trademark double-bubble roof.

The Zagato features a 3.0-litre straight-six engine that produces 603bhp and 516lb ft for a 0-62mph time of just 3.3sec and a top speed in excess of 186mph, Bovensiepen claims.

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It has bespoke Bilstein dampers that can be configured in three driving modes (Comfort, Sport and Sport Plus), which Bovensiepen says offers "a range from pronounced comfort to athletic driving dynamics".

It also gains a lightweight, twin-exit titanium exhaust system from Akrapovič, which is said to be 40% lighter than the standard system.

BMW will reveal the next steps for the Alpina brand in 2026, it has said, with ex-Polestar designer Max Missoni joining the German firm to lead the styling for all luxury models, including Alpinas.

Bovensiepen's unveiling of the Zagato comes just a day after BMW revealed its own 8 Series-based special edition, the £430,000 Speedtop shooting brake, which is due in production next year.

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