Mad Max Humungus Machine: Six-Wheel F-150 Hits Auction

The Mad Max Humungus Machine is a six-wheel 1984 Ford F-150 with a V8 engine, flamethrower exhaust and a wild movie-inspired design.

A real-world Humungus Machine is now for sale

The Mad Max Humungus Machine has arrived at auction. This unusual creation started life as a 1984 Ford F-150 before being transformed into a six-wheel replica inspired by The Road Warrior.

The build was created by Mad Max Cars near Tacoma, Washington. Its design includes an open cockpit, tubular hoops, exhaust stacks, steel drums and a large rear wing.

It also has one feature that makes this replica especially unusual. The exhaust system can shoot flames, giving the truck an even stronger connection to the post-apocalyptic movie.

The auction is currently open. As of September 20, the bid stands at $2,100, and the auction is scheduled to end on September 23, 2026.

The truck keeps the basic chassis of the original F-150. However, almost everything around it has been transformed.

The most obvious change is the third axle. The custom chassis now uses tandem rear axles, creating the six-wheel layout associated with the movie vehicle.

The build also features 15-inch steel wheels with 33-inch tires. Front disc brakes and rear drums handle stopping duties.

The bodywork is made from custom steel. It also uses camouflage paint and a large collection of exposed mechanical details.

A central spotlight sits above the front section. The truck also has exhaust stacks, side-mounted gas cylinders and decorative equipment inspired by the film.

Two mannequins are included with the sale. They are designed to recreate part of the movie’s visual atmosphere.

A V8 powers this six-wheel machine

Under the custom bodywork sits a 5.8-liter High Output V8.

The engine is paired with a three-speed automatic transmission. Power is sent to the rear wheels.

The original F-150 engine produced around 200 horsepower from the factory, according to the information surrounding the replica. The important part here is not outright speed, but the character of the machine.

The engine bay also contains a Quick Fuel four-barrel carburetor. A Hot Licks flamethrower exhaust kit completes the unusual setup.

That system is responsible for the flames coming from the exhaust pipes.

For a truck inspired by the wasteland of The Road Warrior, it is difficult to imagine a more appropriate modification.

The design comes directly from the Humungus Machine driven by Lord Humungus in the 1981 film.

The original movie vehicle used a similarly aggressive six-wheel layout. Its exposed cockpit and oversized bodywork became some of the most recognisable elements of the film’s vehicle design.

The auction replica follows those visual cues closely.

It adds the tubular frame, elevated rear wing and large exhaust structures. The result is less like a conventional pickup and more like a custom-built movie machine.

The resemblance becomes even stronger with the cowhide-patterned seat and the onboard PA system.

The microphone is attached near the driver’s seat. Loudspeakers are mounted on the roll hoop.

That means the driver can use the system to broadcast messages while behind the wheel.

The interior is as unusual as the exterior

The cockpit was built around a single driver.

The seat uses faux cowhide upholstery, while the dashboard remains relatively simple. The driver gets a three-spoke steering wheel and a Smiths tachometer.

There is no odometer in the vehicle.

The steering wheel also has a cracked rim, adding to the intentionally weathered appearance.

The custom design does not try to hide the truck’s mechanical components.

Instead, it places them on full display.

That includes the exhaust stacks, exposed tubing and other elements mounted around the cockpit.

The Mad Max Humungus Machine is therefore far removed from a normal 1984 F-150.

The chassis has been extensively modified. The bodywork is custom. The truck now rides on six wheels and carries a large collection of movie-inspired details.

The listing also notes that rust is visible on some underbody components. The vehicle has a clean Carfax report, while its Montana title identifies it as a 1984 Ford F-150.

The current auction gives collectors an opportunity to own a full-size replica built around one of the most recognisable vehicles from The Road Warrior.

There is also an important practical detail. The auction ends on September 23 at 12:48 p.m. Pacific Time, although late bids can extend the closing time.

As of September 20, the bidding remains relatively low compared with the amount of work involved in the build. However, the final price will depend on activity during the closing period.

The Mad Max Humungus Machine offers almost nothing in the way of modern efficiency. What it does offer is a six-wheel F-150 chassis, a V8 engine, a flamethrower exhaust and an unmistakable movie-inspired appearance.

For collectors and fans of automotive movie culture, it is one of the most unusual Ford F-150-based builds currently heading toward an auction finish.