There were just over 39,000 cars registered in Donegal at the end of last year according to the Annual Bulletin of Vehicle and Driver Statistics, which has just been published by the Department of Transport.
Toyota is the most popular car brand in the county followed by Ford and Nissan.
2,723 new cars were registered in the county last year, the first increase since 2010.
Donegal's register also includes just over 13,000 vans, almost 4,000 tractors and 800 motorcycles.
There were just over 97,000 driving licences issued in the county at the end of last year,almost 7,000 of which were learner permits.