The e.dams-Renault team of Buemi and Prost led the way.
The fifth and final test takes place on August 19.
The third day of Formula E testing at Donington Park ended with e.dams-Renault's Sebastien Buemi on top of the charts.
The second official test for the all-electric FIA Formula E Championship at Donington Park.
The first of five public tests took place at the Leicestershire circuit in dry, bright conditions and saw all 10 teams and drivers use the full Donington Park GP circuit.
Franck Montagny: "Today is not about performance, but about understanding the car."
Taking part in the first ever shakedown for the 10 Formula E teams, Mahindra Racing drivers Bruno Senna and Karun Chandhok completed various system checks during the day’s running.
Technical partner Renault attended the test to provide its expertise in the realms of both motorsport and electric vehicles.
Fully-electric Spark-Renault SRT_01E breaks cover at La Ferte Gaucher circuit