The under-siege Labor MP Emma Husar claimed thousands of dollars in taxpayer-funded limousine travel around her home city despite leasing her own taxpayer-funded car, Fairfax Media can reveal.

Backbenchers are entitled to use the publicly-funded Comcar service in Canberra, while interstate on business and for travel to and from the airport in their home town for official business purposes.

MPs are expected to use their own publicly funded private vehicles to attend functions and parliamentary business in their home town where they are reasonably able to.

Labor MP Emma Husar is already facing an internal investigation into allegations of bullying her staff. Credit:Andrew Meares

But Fairfax Media has identified more than $2000 worth of Comcar trips taken by Ms Husar since June last year in Sydney to attend functions and meetings involving no interstate flights or travel.