The logo of car rental company Sixt is seen at Zurich Airport, January 9, 2018. REUTERS/Arnd Wiegmann

FRANKFURT (Reuters) - Germany's Sixt SIXG.DE said on Thursday it would launch a new mobility platform this year that bundles its traditional car rental and transfer services with a car-sharing offering, challenging carmakers BMW BMWG.DE and Daimler DAIGn.DE.

Sixt in January sold its stake in car-sharing service DriveNow to joint venture partner BMW, which is expected to combine the company with Daimler’s Car2Go in an alliance.