Last year, the Bovensiepen Zagato was revealed, a coachbuilt masterpiece based on the BMW M4 Convertible. This stunning machine is a collaboration between luxury automotive brand Bovensiepen and iconic Italian design firm Zagato. At the time of its reveal, we didn’t know how much it would cost or the full extent to which it could be customized, but the company has now shared this information. Let’s just say that this dramatically prettier “M4” comes with a price tag that’s far in excess of anything you can buy from BMW.
Over Four Times An M4 Convertible’s Price
Bovensiepen Zagato Bovensiepen
The Bovensiepen Zagato is limited to just 99 units and each one will cost €369,495, which works out to around $434,000 at current rates. That’s over four times as much as the M4 Competition Convertible, which starts at $98,400 in the United States. It falls short of what BMW charged for the modern 3.0 CSL, though; that was priced at over $800k and is loosely based on the M4 CSL.
Although the Bovensiepen Zagato is a coupe, it’s based on the M4 Convertible, allowing the company to create a sleek, pillarless design with Zagato’s famous double-bubble roof.
The normal M4’s enormous grille has been entirely binned, and for the better. In its place is a much more attractive front fascia with a low, wide hood and reshaped headlights. The exterior body is crafted from carbon, and in total, the car has over 400 custom parts and takes over 250 hours to build. At the back, the taillights closely resemble the ones on the M4 CSL, but everything else is different. Overall, it’s a vastly more elegant car than the BMW it’s based on.
Highly Customizable
Bovensiepen Zagato Bovensiepen
Customers spending over $400k on a coachbuilt car expect to be able to personalize it to suit their tastes, and the Bovensiepen Zagato’s configurator shows just how far you can go. There are metallic, Individual, and Bovensiepen “Paintwork on demand” options for the exterior. Some of the most vivid shades include Speed Yellow, Volcano Red, Rosso metallizzato, and Azzurro California. Various diamond-cut wheel options are available, as are several brake caliper options, including milled Bovensiepen script in the color of your choosing.
Bovensiepen Zagato Bovensiepen
The interior is clearly inherited from the M4, but materials are significantly upgraded—that comes as no surprise, since Bovensiepen was founded by the sons of Alpina’s founder, and Alpina BMWs have always been a step up in quality. Merino leather is standard, with Lavalina leather in colors like Mugello Red, Verde Heritage, Birch, and Heaven (blue). The color you choose extends to the roof pillars, shift lever, and door panels.
Although generally well-equipped by default, Bovensiepen allows you to add the following extras:
- Carbon Package
- Luggage area and floor lining in Alcantara
- Engine Compartment Package
- Lavalina steering wheel with thin rim
These options are in addition to standard items like Comfort Access, electric front seats with heating, an Alcantara headliner, a driving assistant, and a Harman Kardon sound system.
The 3.0-liter six-cylinder engine has been tuned to make 602 horsepower, enabling a 0-62 mph time of 3.3 seconds—so this high-end coupe will outsprint every normal M4.
Final Thoughts

Bovensiepen
With gorgeous looks, the proven M4 base, high exclusivity, and potent performance, the Bovensiepen Zagato is one of the most desirable coupes in the world. Its price puts it into a league with the likes of Rolls-Royce, but it’s really competing with rarities in the coachbuilt world. For the 99 lucky customers who can afford one, it’s a car that should be as good to drive as it is to look at, and it’ll likely still be worth hundreds of thousands of dollars years from now.