[2] The avgas-powered version of the DA50 was intended to be equipped with a single FADEC-equipped Continental TSIO-550-J powerplant with twin turbo chargers producing 350 hp (261 kW).

[3] The airplane made its public debut at the AERO Friedrichshafen show in Germany on 19 April 2007 and was first shown in North America at Airventure in July 2007.

[6] At the April 2017 AERO Friedrichshafen show, Diamond announced DA50 variants powered by diesel SMA Engines and other powerplants.

The company then announced a new version of the design with fully retractable landing gear and a Continental CD-300 diesel engine,[8] at the 2019 AERO Friedrichshafen show.

At that time Diamond planned to announce its price and start accepting orders at the Aero Friedrichshafen show in April 2020, with European certification and introduction expected in the third quarter of 2020.

[10] Diamond Aircraft announced EASA certification of the DA50 RG (retractable gear) on 9 September 2020, with deliveries planned to start in the first quarter of 2021.

[13] The design features double-slotted flaps, retractable landing gear, a Garmin G1000 NXi flightdeck with autopilot and single lever power controls.