Crashing into a cow resulted in serious injuries for an Auckland man.

The 56-year-old was the passenger in a car that crashed into a cow at speed in Te Aroha, Waikato.

The condition of the cow and driver were not established.

The man was treated by St John paramedics before being flown to Waikato Hospital with chest and abdominal injuries by the Waikato Westpac Rescue Helicopter.