A 69-year-old woman was fatally struck just outside her Brooklyn home by a Mercedes driver making an illegal U-turn, cops said Wednesday.

Bella Wolman was crossing Avenue M in the marked crosswalk at E. 12th St. in Midwood when she was struck by a 2020 Mercedes Benz S 540 about 5:20 p.m. Tuesday, cops said.

The driver was making a U-turn through a red light, according to police.

Medics rushed Wolman to Maimonides Medical Center, where she died.

Driver Gittie Klein, 65, was arrested for failure to yield to a pedestrian and failure to exercise due care. She was also cited for running a red light and making an illegal U-turn.

Wolman was struck just down the block from her home. Klein lives about a mile away from where she crashed.