Venuum Turned The Mercedes G-Class Into A Wild Four-Door Convertible

by AutoExpert   |  9 June, 2026

Share :

Mercedes-Benz is still working on its own G-Class Cabriolet, but Venuum clearly got impatient and built one first. The result is called the Mastodon V4, and it takes the already attention-hungry G-Wagen into a completely different territory.

This goes far beyond a simple roof chop. Venuum appears to have reworked nearly every exterior panel on the G-Class. The front end now wears a huge forged-carbon bumper, a custom hood, different headlights, and a much more aggressive grille. It barely looks factory anymore.

Venuum Mastodon V4

Things don’t calm down along the sides either. There are massive wheels, oversized forged-carbon fender flares, and deep side skirts that make the SUV look wider and lower than a regular G-Class. Somehow, it still keeps four doors, even though the proportions almost make it look like a shortened custom build.

Venuum Mastodon V4

Of course, the biggest change is at the back, where the roof has disappeared completely. Venuum says there’s a fabric top that can cover the rear seats when needed, though so far the company has only shown the SUV fully open. Inside, Venuum's Mercedes G-Class gets yellow-and-black leather along with even more forged carbon fiber, including a custom rear center console.

Venuum Mastodon V4

Venuum hasn’t said how many Mastodon V4s it plans to build, only confirming production will be limited. 

Venuum Mastodon V4

Recomended:

Audi’s A2 Had a Removable Bonnet, but Owners Didn’t Need It Off to Check the Oil - Photo
Others
Audi’s A2 Had a Removable Bonnet, but Owners Didn’t Need It Off to Check the Oil

The original Audi A2’s front service flap provided access to its oil dipstick and the filling points for engine oil and washer fluid. More extensive engine access involved removing the bonnet. O

AutoExpert
Look Behind the Seats: Porsche Gave the 928 Sun Visors at the Back - Photo
Others
Look Behind the Seats: Porsche Gave the 928 Sun Visors at the Back

The Porsche 928 had small sun visors near the top of its rear hatch opening, roughly level with the tailgate hinges. They helped shade the rear cabin from sunshine entering through the large, sloping

AutoExpert
Honda Put a Vacuum Cleaner in the Odyssey, but Spilled Drinks Were Still Your Problem - Photo
Others
Honda Put a Vacuum Cleaner in the Odyssey, but Spilled Drinks Were Still Your Problem

HondaVAC was a factory-installed vacuum offered on selected Honda Odyssey versions. Stored in the rear cargo area, it cleaned up dry dirt and debris using a pull-out hose and attachments. Despite bein

AutoExpert
This Maserati GranTurismo Is Now A Handcrafted Copper Work Of Art - Photo
Car News
This Maserati GranTurismo Is Now A Handcrafted Copper Work Of Art

Someone looked at a Maserati GranTurismo and decided it needed a copper skin. Not copper-colored paint, actual copper, hammered by hand and shaped into a one-off body. The result is the Peralta D, the

AutoExpert
Toyota Put Snow Tracks on Five of Its Toughest SUVs and Trucks — But You Can’t Buy Them - Photo
Concept
Toyota Put Snow Tracks on Five of Its Toughest SUVs and Trucks — But You Can’t Buy Them

Toyota apparently looked at five of its SUVs and pickups and thought, “You know what these need? Snow tracks.” The result is the Snowhunter concept family, a collection of machines built t

AutoExpert
Mopar Gave the 2027 Dodge Charger More Attitude — But No Extra Horsepower - Photo
Car News
Mopar Gave the 2027 Dodge Charger More Attitude — But No Extra Horsepower

Mopar is turning 90, and its birthday present comes with carbon fiber, a hood scoop, and enough attitude to fill a parking lot. Meet the Mopar '27 Dodge Charger, a limited-edition package that giv

AutoExpert
Aston Martin Valkyrie Owner Spent $314,000 On Options, But May Still Lose Millions - Photo
Car News
Aston Martin Valkyrie Owner Spent $314,000 On Options, But May Still Lose Millions

Aston Martin built only 150 Valkyrie Coupes, and getting one new meant having millions to spare. Now, one of these road-going machines is heading to auction with an estimate that could leave its origi

AutoExpert
Mitsubishi Just Turned the Family-Friendly Outlander Into a Much Tougher Trail SUV - Photo
Car News
Mitsubishi Just Turned the Family-Friendly Outlander Into a Much Tougher Trail SUV

Most Mitsubishi Outlanders spend their lives doing school runs, grocery trips, and the occasional family holiday. The new Diamond Trail Edition, however, looks like it has other plans. Unveiled ahead

AutoExpert
Stuck at the Pump? Your Fuel Door May Have a Release Hidden in the Boot - Photo
Others
Stuck at the Pump? Your Fuel Door May Have a Release Hidden in the Boot

A stuck fuel door may have a manual release accessible from the luggage compartment. First check that the car is unlocked, then consult its handbook for the correct procedure. Some cars have a release

AutoExpert
Turn This Citroën’s Steering Wheel and the Middle Stays Exactly Where It Was - Photo
Others
Turn This Citroën’s Steering Wheel and the Middle Stays Exactly Where It Was

The first-generation Citroën C4 used a steering wheel with a rotating rim and a fixed central section. Keeping the centre stationary meant its controls stayed upright and allowed an airbag design

AutoExpert