After passing his Mercedes rival, Verstappen saw out the rest of the race comfortably, finishing ahead of Lando Norris and seven-time world champion Lewis Hamilton.
The result extended the 26-year-old's lead at the top of the drivers' standings to 69 points, with the McLaren ace Norris replacing Charles Leclerc as his nearest challenger.
World champion tests title-winning car
Prior to Sunday's showpiece at the Circuit de Barcelona-Catalunya, it was revealed that the reigning world champion had tested out an old Red Bull model at Imola.
Now, chief engineer Paul Monaghan, has explained why the team were eager to get their star man out on track in the RB18 which delivered his 2022 title.
“We really tried to give Max a reference from a previous car,” Monaghan said.
“When you’re trying to assess the strengths and weaknesses of a current car, his reference is the current car and you might say, ‘oh well in previous years we’ve had this, we’ve had that’.
“Have we really because we haven’t run them at the same time? So, in taking that car out, we try to give Max a reference to judge it from and he’s been able to give us feedback from that. It’s up to us what we do.”