The tractor top speed record was recently broken at the Elvington Airfield in the United Kingdom. Guy Martin drove the modified JCB excavator to 103.6 mph. This rig is powered by a 7.2L DieselMax 6 cylinder that is said to make 1000hp and 1800 ft-lbs of torque.
The previous record was set by the Stig in March of 2018. The Stig was able to reach to 87 mph in a modified tractor that was powered by a 5.7L Chevrolet engine.