The largest tractors in the world are incredibly powerful machines.

Big Bud 16V-747 Tractor
Big Bud’s size is no coincidence; this enormous tractor has some genetic resemblance to really large mining machinery, which is 28 feet long and 20 feet wide. The Clark D-85840 axles used in the Clark Michigan L480 wheel loader, a venerable mining standard, are installed on the 8-foot-tall wheels of this 4WD tractor. Thanks to its 16-cylinder Detroit Diesel 16V92T engine, Big Bud was able to work more than one acre each minute. Big Bud returned to Montana after the Williams brothers purchased the massive tractor, ripping cotton fields for the Rossi brothers in California and doing additional ripping work in Florida.

Big Roy: Versatile 8-WD Model 1080 tractor
The 8WD Model 1080, sometimes known as “Big Roy” after Versatile president Roy Robinson, was developed by Versatile ᴍᴀɴufacturing Ltd. in the same year as Big Bud was put to use. This enormous tractor, which is 30 feet long, 22 feet wide, and 11 feet high, was constructed in Winnipeg, ᴍᴀɴitoba, Cᴀɴᴀᴅᴀ. A 600-horsepower V-12 19L Cummins engine powers it. Contrary to Big Bud, the engine on Big Roy is placed behind the operator’s cab, which reduces visibility in the rear. In order to fix this design fault, Versatile included a ᴄʟᴏsᴇd-circuit television system with a dust-proof 120-degree camera to transmit images of the drawbar to the TV display installed in the cab’s dashboard.

AGCO Challenger MT975B tractor
Despite being smaller than Big Bud and Big Roy, the AGCO Challenger MT975B tractor possesses the world’s heaviest and widest tractor frame. 5 This gigantic tractor, measuring 24 feet long by 16 feet wide, and standing just over 12 feet tall, has a six-step ascent to the cab. A Caterpillar diesel engine with 18.1 liters and 570 horsepower powers the tractor. Even with a tight 42-degree turning circle made possible by the MT975B’s articulation point, the tractor is still too wide to safely navigate most Western European motorways.

Case IH Steiger Quadtrac 620 tractor
The largest, most potent, most fuel-efficient tractor in the world, the Case IH Steiger Quadtrac 620, was released in 2013. The 12.9-liter Case IH FPT engine on the tractor can produce a maximum of 682 horsepower thanks to two-stage turbocharging. In comparison to Versatile’s Big Roy, the Quadtrac 620 tractor provides the best available all-around view from the cab. The Quadtrac 620 measures 25 feet in length and 13 feet in height.

Upton HT14/350 2WD tractor
Although less potent than the Quadtrac 620, the Upton HT14/350 2WD tractor is still the most potent 2WD factory-built agricultural tractor in the world. The HT14/350 was produced by Upton, a tractor company famous for producing tractors that resemble tanks, in Corowa, NSW, Aᴜsᴛʀᴀʟɪᴀ, in 1978.