The account covers all above-the-line media duties for the Hertz, Dollar, Thrifty and Firefly brands in "corporately owned" markets – the UK, Belgium, the Czech Republic, France, Germany, Italy, Netherlands and Spain. It also includes a brief to support franchisee countries within EMEA.
Omnicom's OMD was also believed to have been involved in the pitch process.
Elyes Mrad, vice-president of sales and marketing, Hertz International, said: "The appointment of Mindshare as the new media agency for our pan-European media planning brings fresh air to our marketing campaigns.
"Hertz is reinventing the car rental experience through its innovative products and services. Mindshare’s creative and cutting-edge media-buying solutions are perfectly aligned with our identity. We are confident that this new alliance will result in an even more effective exposure for our brands."
Mindshare’s winning pitch team was led by Marco Rimini, chief executive of the Mindshare Worldwide Central Team.