Julen Lopetegui's leadership of Spain got off to a winning start with a comfortable 2-0 friendly win against Belgium in Brussels on Thursday, with David Silva scoring a brace.
Belgium were also playing under a new coach - Roberto Martinez having replaced Marc Wilmots after Euro 2016 - but they struggled to create clear openings at the King Baudouin Stadium.
Silva gave Spain the lead in the first half, finishing well from inside the box after Vitolo did well down the right wing, before the Manchester City playmaker added a second after the break.
It was not all good news for Lopetegui, however, as Spain's preparations for their opening World Cup qualifying match with Liechtenstein on Monday were hit by an injury to Alvaro Morata.
Belgium get their campaign under way in Cyprus the following day and Martinez will demand an improvement on this flat performance.
An early mistake by David de Gea almost presented Belgium with the opener in the sixth minute, but Axel Witsel shot wide after the Manchester United goalkeeper fumbled Eden Hazard's cross.
Thiago Alcantara had Spain's first sight of goal after 19 minutes but he got his volley all wrong and it bounced harmlessly wide of Thibaut Courtois' left-hand post.
Lopetegui's men began the second half with the same purpose they had shown in the first period, with Courtois making a fine save to keep out a Gerard Pique header from Koke's free-kick.
Costa was then denied Spain's second goal by his Chelsea team-mate Courtois after 56 minutes, the goalkeeper thrusting out a leg to block the striker's shot.
Silva stepped up to send Courtois the wrong way and give Spain the extended advantage their dominance deserved, with Koke fizzing a late chance for a third wide of the post.
