Police were gobsmacked when they pulled over a Victorian driver with more than 145 demerit points to her name.

Yarra Glen's Sergeant Richard Coulson said the woman was arrested on an outstanding warrant on Sunday night after reports she was driving erratically.

She had the most demerit points he'd ever seen.

The 32-year-old Healesville woman, who blamed an ex-partner for the majority of the demerit points, will be charged on summons for driving while suspended.

She is expected to front the Ringwood Magistrates Court next year.

Her car was impounded for 30 days.

A fully licensed driver can accrue 12 demerit points before losing their licence.