The blaze erupted at the campus, in College Way, Bridgwater, at around 3.30am, with 15 fire crews from across the county attending the scene.
Motorsport and motorcycle training workshops are understood to have been ‘completely destroyed’ by the fire.
A spokesperson for the Devon and Somerset Fire and Rescue Service said in the early hours: “There are 15 Fire Engines from Bridgwater, Taunton, Burnham on Sea, Nether Stowey, Street, Glastonbury, Wellington, Somerton, Cheddar, Winscombe and Weston Super Mare and various specialist appliances and officers currently dealing with it.
