Blue light (symbol image)
Photo: Christophe Gateau / dpa
A 49-year-old apparently intentionally hit his wife in the Saarwellingen community several times with a car and seriously injured him.
A police spokesman for the German Press Agency said that witnesses had reported that he had specifically driven towards the woman who was two years his junior.
The "Saarbrücker Zeitung" also reported on the case.
The couple reportedly lived separately and were known to the police.
She had had to intervene there several times because of disputes.
After the act on Sunday evening, the man initially fled, but was later arrested.
An arrest warrant had been issued for attempted murder, the police said.
The 49-year-old was taken to a correctional facility.
The woman was taken to a hospital with life-threatening injuries.
She is now out of danger, a spokesman said.