Markus Zahn found it out the hard way when one of the animals chomped down on his beloved motor, which costs £220,000.
He had left his McLaren 650S Spider by Vitus the donkey’s paddock in Germany, in September 2016.
The animal may have mistaken the orange car for a giant carrot when he bit the back of it, damaging the paint and a carbon-fibre piece.
Video Credit: Metro UK
‘The donkey probably thought the car was a carrot on wheels. I’m not mad at him,’ Mr Zahn told Bild.
He added: ‘I looked into the rear-view mirror and suddenly saw a pair of fluffy ears.
‘And then I heard a strange sound. The sound came from a donkey, who was gnawing at my fender.’
Mr Zahn took the donkey’s owner to court after he was billed £5,113 (5,800 euros) for the damage by his insurance company, which had covered the rest of the £26,000 costs.
He won his claim on Thursday but Vitus’ owner has refused to pay the money and told the McLaren driver he should have picked a better parking place.
The donkey had no comment.