A car almost crashed into Hamilton Central police station last night after a passenger allegedly smashed a wine glass into the face of the driver.

Police likened the incident to something from a "B-grade sitcom" after a domestic argument got out of control and the couple's car mounted the footpath, coming to a halt just centimetres from bollards outside the front doors at about 10pm.

"It turns out an estranged couple who had enjoyed a short, volatile relationship, had held a reconciliation meeting in the car near the Hamilton Lake but things had not gone so well," Meadows said.

As the man was driving his partner home, she allegedly smashed a wine glass in his face, causing several cuts.

As he was trying to restrain her, the car crashed, Hamilton Senior Sergeant Gill Meadows said.

"What we encountered certainly wasn't one of the scenarios we'd been thinking of.

"If you were watching a B-grade sitcom this would no doubt have appeared quite humorous. However, domestic violence is not funny and the situation could have ended far worse than it did."

The woman, in her fifties, was charged with assault with a weapon and spent the night in the police cells.