A German man forgot his car after filling it up at a petrol station, police said Friday.

"He just forgot about it and walked off home," said a spokesman for police in the western city of Wuppertal.

After the car had sat blocking the pump for about an hour, a woman working at the petrol station became suspicious and alerted authorities.

Officers contacted the 63-year-old from Remscheid, who came straight back to fetch the vehicle. He had paid to fill up the car before walking off.