07 May Mansory Speranza: 850-HP Mercedes G-Class Convertible Debuts at Monaco

Mansory’s new Speranza rewrites the rules for the Mercedes-Benz G-Class, slicing away the roof and re-stitching the body to create a four-door convertible that can thunder from 0-62 mph in four seconds while enveloping its passengers in carbon-fiber couture. Debuting at Top Marques Monaco 2025, the one-off “One of One” conversion marries 850 hp of twin-turbo V8 fury with a power-operated soft-top and forged 24-inch wheels—finally giving the G-Wagon the open-air glamour its Jeep Wrangler and Ford Bronco rivals have long enjoyed.

Convertible Couture, Monaco Debut

Mansory revealed the Speranza on the Côte d’Azur at Top Marques Monaco 2025, a venue befitting the tuner’s taste for excess and exclusivity. The project resurrects the short-lived factory G-Class Cabriolet but adds two extra doors and a modern W465 platform, positioning the build as the first fully open four-door G-Class of the AMG era.

Torsional Alchemy: Engineering a Four-Door Drop-Top G

Removing the G’s roof demanded extensive reinforcement; Mansory grafted internal bracing and redesigned the rear half-shell to preserve torsional rigidity. Distinctive triangular C-pillar windows and rear-hinged “suicide” back doors maintain structural support while framing uninterrupted sky views.

Carbon-Fiber Bodywork & Power-Lined Soft-Top

A full wide-body kit in naked carbon, deeper intakes, and a ventilated hood broadcast Mansory’s signature aggression. The lined, electrically operated canvas roof tucks away behind the rear seats, transforming the upright Geländewagen silhouette into a lounge-ready landaulet in seconds.

Cabin Haute Couture

Inside, the tuner replaces stock trim with quilted leather, forged-weave carbon, and a flat-bottom steering wheel worthy of a GT3. Contrast-stitch embroidery and illuminated “One of One” badging underline the bespoke ethos.

850 Horsepower, 1 150 Nm: The Numbers Behind the Noise

Mansory coaxes the 4.0-liter biturbo V8 to 850 hp (820 hp on the official spec sheet) and 1 150 Nm by installing larger turbochargers, free-flow downpipes, and recalibrated ECU mapping. The result is a 0-100 km/h run in 4.0 s and a governed 250 km/h top speed—hyper-car pace for a machine that can still clamber up a vineyard terrace.

Forged FC.5 Wheels & Chassis Tweaks

Fully forged 24-inch FC.5 wheels hide upgraded brakes and adaptive suspension tuned for the Speranza’s extra stiffness. Their turbine-like spokes match the squared arches, while bespoke side-exit exhausts announce every gearshift in AMG-baritone.

One-Off Rarity & Eye-Watering Value

Mansory confirms the Speranza follows its “One of One” philosophy; each example is built to a single client’s brief, with pricing rumored well north of €500 000 based on past Cabrio conversions. Early G 500 Speranza cabriolets have traded hands for over $516 000, hinting at the new model’s seven-figure potential.

Open-Air Luxury the G-Wagon Never Offered

Jeep Wrangler and Ford Bronco owners have long enjoyed removable roofs and doors straight from the factory. Car and DriverMotorTrend Mansory’s re-engineering finally grants the G-Class comparable alfresco freedom—albeit with V8 thunder and quilted-leather decadence neither rival can match. MotorTrendMotorTrend

Verdict: A Catwalk on Mud-Terrains

With Speranza, Mansory proves an icon can be both a trail boss and a Riviera showpiece. Carbon couture, runway wheels, and a hurricane of horsepower converge under an open sky, making this drop-top G-Class less an SUV and more a rolling fashion statement—ready for sand dunes at noon and Monte Carlo soirées after dark.

Written and curated by Ozzie Small