Bottas set a best time of 1m16.625s using the C3 Pirelli tyres, which were the designated softs for last weekend’s Spanish Grand Prix, shortly before midday.

This consolidated his advantage at the top of the timesheets over Ferrari driver Charles Leclerc, who had earlier topped the times.

Leclerc improved his time shortly afterwards using the Pirelli C1 tyres, the hards last weekend, to close to 0.797s behind.

Bottas subsequently set the fastest times of the day in each sector, although did not put them together on the same lap so his time did not improve.

McLaren driver Carlos Sainz Jr was third-fastest using the C2 Pirellis, just 0.021s quicker than the similarly-shod of Pierre Gasly.

Gasly completed 77 laps during the four hours of running, more than anyone else.

Ferrari fielded a second car in Spanish Grand Prix specification for Pirelli test work, with Sebastian Vettel driving and ending up fifth-fastest using unmarked test tyres.

driver Daniil Kvyat was sixth using C3 rubber ahead of Pietro Fittipaldi for .

The Brazilian made a series of improvements in the final hour before lunch using C3 rubber, working his way down to a 1m18.643s.

Racing Point driver was eighth-quickest in the second Pirelli test car, ahead of driver .

Hulkenberg had a quiet morning, completing only 12 laps early on before taking his tally to 22 and improving to a 1m20.239s.

Racing Point simulator driver Nick Yelloly made his first F1 appearance for four years and ended up 10th-fastest, just ahead of Alfa Romeo’s test debutant Callum Ilott.

Ilott focused on running on C2 rubber, setting his best time with just under 40 minutes remaining.

F2 championship leader returned to action for ahead of his planned FP1 appearance during the weekend.

He set a best time of 1m21.008s, 4.483s off the pace, using C2 Pirellis.

Pos.DriverCarTimeGapLaps
11:16.525 69
2Charles LeclercFerrari1:17.3220.79766
3Carlos SainzMcLaren1:18.2631.73864
4Pierre Gasly1:18.2841.75977
5Sebastian VettelFerrari1:18.4251.90058
6Daniil Kvyat1:18.5972.07257
7Pietro Fittipaldi1:18.6432.11857
8Racing Point1:19.7193.19466
91:20.2393.71426
10Nick YellolyRacing Point1:20.6094.08455
11Callum IlottAlfa Romeo1:20.6834.15831
121:21.0084.48366

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List

, AMG W10

Valtteri Bottas, Mercedes AMG W10

1/12

Photo by: Zak Mauger / LAT Images

, AMG W10

Valtteri Bottas, Mercedes AMG W10

2/12

Photo by: Mark Sutton / Sutton Images

Nick Yelloly, Racing Point RP19

Nick Yelloly, Racing Point RP19

3/12

Photo by: Mark Sutton / Sutton Images

Carlos Sainz Jr., McLaren MCL34

Carlos Sainz Jr., McLaren MCL34

4/12

Photo by: Mark Sutton / Sutton Images

Charles Leclerc, Ferrari SF90

Charles Leclerc, Ferrari SF90

5/12

Photo by: Zak Mauger / LAT Images

, R.S. 19

Nico Hulkenberg, Renault R.S. 19

6/12

Photo by: Zak Mauger / LAT Images

Pietro Fittipaldi, VF-19

Pietro Fittipaldi, Haas VF-19

7/12

Photo by: Joe Portlock / LAT Images

Callum Ilott, Alfa Romeo C38, spins

Callum Ilott, Alfa Romeo C38, spins

8/12

Photo by: Mark Sutton / Sutton Images

Nick Yelloly, Racing Point RP19

Nick Yelloly, Racing Point RP19

9/12

Photo by: Mark Sutton / Sutton Images

, FW42

Nicholas Latifi, Williams FW42

10/12

Photo by: Joe Portlock / LAT Images

, FW42

Nicholas Latifi, Williams FW42

11/12

Photo by: Zak Mauger / LAT Images

Sebastian Vettel, Ferrari SF90

Sebastian Vettel, Ferrari SF90

12/12

Photo by: Mark Sutton / Sutton Images