Michael Schumacher ended the day's testing at Barcelona on top, with team mate Rubens Barrichello second, but once again nearly a second behind
The German continues his dominant run in testing, having been fastest overall this morning and yesterday, and having blitzed the Silverstone test last week.
Heinz-Harald Frentzen was third, but reliability worries remain, as the German was only able to complete 43 laps - less than half what both of the Ferraris were able to run.
Coulthard was the top McLaren in fourth place, and completed 107 laps - a total second only to Arrows' Pedro de la Rosa on 110 - suggesting that McLaren's early season reliability worries are well and truly in the past.
Johnny Herbert was next up, around a second slower than Schumacher, but only half a second off the second place man. He also put in a promising 88 laps.
Arrows driver De La Rosa was next in line, followed by McLaren tester Panis, and Benetton drivers Wurz and Fisichella.
Jaguar test driver Burti did not improve on the 5 laps he had completed in the morning.
1 M Schumacher Ferrari 1m20.862 2 Barrichello Ferrari 1m21.465 3 Frentzen Jordan 1m21.673 4 Coulthard McLaren 1m21.801 5 Herbert Jaguar 1m21.993 6 De La Rosa Arrows 1m22.076 7 Panis McLaren 1m22.390 8 Wurz Benetton 1m22.494 9 Fisichella Benetton 1m22.543 10 Salo Sauber 1m22.629 11 Gene Minardi 1m23.298 12 Trulli Jordan 1m23.358 13 Button Williams 1m23.570 14 R Schumacher Williams 1m23.621 15 Villeneuve BAR 1m23.757 16 Heidfeld Prost 1m24.107 17 Zonta BAR 1m24.192 18 Alesi Prost 1m24.433 19 Burti Jaguar 1m25.276
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