Suffolk County Council has dismissed two employees for misuse of pool cars, according to reports.
The misconduct was discovered following an investigation by the local authority.
Suffolk County Council investigated 113 members of staff for misuse of pool cars between April 2017 and June 2018, 13 of whom were found to have abused the system.
Of those, two were dismissed; three received final written warnings; one received a first written warning; two had no case to answer for and one had reached a settlement agreement because of an ongoing disciplinary investigation for a separate matter, according to a report by the Eastern Daily Press (EDP).
There were also three who received non-formal disciplinaries and one temporary worker who had their contract terminated.
A spokesman from Suffolk County Council told the EDP: "We have a zero-tolerance policy regarding the misuse of council resources, so where evidence has been found of this, appropriate action will be taken.
"Our employees are frequently reminded of our policy on pool cars, mileage and subsistence.
"These are regularly audited to identify any apparent misuse and allow us to investigate and take action accordingly."
Council rules state that pool cars should not be taken after 5pm, on weekends or booked in the week to continue over a weekend, unless prior permission had been sought.
Another member of staff was dismissed in the summer of 2017 after a whistleblower reported the individual to have misused pool cars prior to the review.
The cost to taxpayers has not yet been identified, but it is understood that the council recovered around £2,000.
Council chiefs sent reminders to staff about pool car use and updated the internal bookings, following the investigation.