A man was burnt with hot engine oil after a farm vehicle exploded in the Hawkes Bay this afternoon.

Hawkes Bay Rescue Helicopter attended the scene around 3pm at Wanstead, where a 31-year-old had received serious burns after a vehicle's engine blew up.

The male was flown to Hawkes Bay Regional Hospital for further treatment, Louise Harvey from the helicopter service said.

Ambulance also attended the scene.