Toto Wolff is confident Nico Rosberg won't let Lewis Hamilton's current dominant form throw him off his stride.
Although the German won the opening race of this season in Australia, it has been all Hamilton since.
Last time out in China the British driver claimed his third victory on the trot - the first hat-trick of his career - to close the gap to four points in the Championship.
Rosberg, though, has been far behind his team-mate, finishing second in every race Hamilton has won.
Asked if Rosberg would 'let his head drop', Wolff told BT Sport: "No, not at all. He is very focused.
"Following the race in China, when things did not go well for him all weekend, the thing he said afterwards was that it (his second place) was damage limitation.
"You have to remember a Championship isn't won in one race, or two or three, it is won over 19 races.
"I guess they will continue to fight hard for the Championship, so there is a strong possibility we will see more races like in Bahrain where they went wheel to wheel."
Wolff, though, has warned both his driver and Mercedes against complacency as they chase their fifth win of the Championship in Spain this weekend.
"I believe this is an exceptional run we are on which you cannot take for granted.
"In a couple of years we will look back and say it was really great - winning four races in a row and claiming three doubles in a row.
"But we have to keep our feet on the ground and concentrate on developing the car further.
"You could see at the last race in China some of our competitors were strong in some of the stints, so we have to analyse why not the whole race.
"Fernando Alonso was strong in the first and second stint, as was Daniel Ricciardo, and also it was difficult to overtake.
"So if you get something wrong you can quickly end up in a situation where your comfortable lead is a lead no more.
"You don't want to be caught on the backfoot, so the kind of spirit we are trying to foster is that we do not have a comfortable lead."
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