Mercedes-EQ's Stoffel Vandoorne led the way in testing on Tuesday at Valencia's Circuit Ricardo Tormo, with teams completing a race simulation, in-amongst their mileage across the morning and afternoon sessions.
The Belgian's 1m26.045s was some 0.7 seconds up on the morning's pace, set by Antonio Felix da Costa (DS TECHEETAH), with track conditions slightly warmer in the afternoon and the circuit a little more rubbered in. In fact, the top 15 in Session 4 ran inside the Portuguese driver's effort set earlier in the day.
Another Mercedes-powered car followed Vandoorne on the timesheets, with Edoardo Mortara (ROKiT Venturi Racing) second.
Jake Dennis (Avalanche Andretti) followed with Nyck de Vries in the sister Mercedes fourth. Pascal Wehrlein (TAG Heuer Porsche) wound up fifth, only 0.131 seconds back from Vandoorne, and Jaguar TCS Racing's Mitch Evans rounded out the top six fastest runners of the day.
Alice Powell took the wheel at Envision Racing for both sessions as she stepped up from her role as simulator driver - the Brit finished the day in 21st.
The field racked up another 1,756 laps, including that simulated 45-minute plus one lap race run before lunch. On-track action will return on Thursday at 09:00 CET, with drivers set for media duties on Wednesday.