Mercedes went into the 2018 campaign with plenty of optimism they would extend their dominance of the V6 turbo hybrid era.
But they knew Ferrari would provide a stern test of their credentials, largely down to the prowess of Sebastian Vettel.
Vettel and Mercedes man Lewis Hamilton went wheel-to-wheel for the first half of the season.
However, Hamilton ultimately pulled away from Vettel in the standings and wrapped up his fifth F1 title in October.
The Brit’s efforts, alongside those of team-mate Valtteri Bottas, ensured Mercedes secured the World Constructors’ Championship too.
Wolff has now revealed he was not a fan of how Mercedes’ battle with Ferrari wore on.
He admitted, though, that he would not like things to be different as it would make victory less sweet.
“It was an unbelievable season,” said Wolff, at the FIA’s awards ceremony on Friday night.
“Did I enjoy the battle with Ferrari? No, I didn’t, it was really tough.
“But if I look back, I wouldn’t have done it any other way. It’s what Formula 1 is all about.
“It’s the pinnacle of motor racing and you expect your competitors to be very strong.
“In the end it makes the end result even more enjoyable.”
Mercedes will be eager to win a sixth set of F1 titles on the bounce next year.
Hamilton has asked his team-mates to identify his weaknesses in order to ensure he is well prepared for the 2019 season.
“I asked my team to send me an email from several different departments, asked them to be blunt,” Hamilton said.
“They don’t even need to tell me who the email’s from, just tell me the things [they] think I can improve on.
“If there’s been a certain experience this year you felt that could be better or something I’ve said that’s swayed the energy within the team.
“Because I’m looking to be the all-time great and that means winning in all areas.”
Hamilton will begin his title defence when the 2019 campaign kicks off next March.
First up is the Australian Grand Prix at Melbourne’s Albert Park Circuit.