Sunday 23 March at 16:25 : Ferrari has vowed to improve the service it provides to its F1 team customers, following a spat of engine problems so far in 2008.

The Maranello based works team's V8 failures in Melbourne attracted global headlines, but as reliability improved markedly this weekend following a frantic investigation back in Italy, customers Force India and Toro Rosso continued to struggle with apparently fragile engine specifications at Sepang.

"Our customers have to be satisfied, so if something can be improved from our side, we need to react," Ferrari team principal Stefano Domenicali told reporters on Sunday.

F1's other supplier of customer engines, Renault, had an engine fail on Mark Webber's Red Bull on Friday.

But Fabrice Lom, who runs Red Bull's Renault engine programme, pointed out that it was the first such blow-up since the two outfits joined forces last year.