Kevin Magnussen has hailed the step forwards Renault has made with its B-spec power unit after he trialled the upgrades for the first time during in-season testing in Spain.
Test driver Esteban Ocon sampled the update, along with Red Bull's Daniel Ricciardo, on Tuesday at the Circuit de Barcelona-Catalunya.
Magnussen returned to the cockpit of the RS16 on Wednesday morning in Spain and was immediately impressed by the new power unit.
"To be honest the engine feels nice to drive, driveability is better than with this engine," he said.
"[There is] more power, but from the driving point of view it’s difficult to feel how fast you are going on the straight, whether you are going [for example] 330km/h or 333km/h, it’s difficult to feel.
"But the engineers will have it on the data and will tell us later on, the power unit is driveable so that we can continue just working as normal
"This power unit is actually better than the old one and we haven’t had that much time to work on it and straight out of the box was better driveability and hopefully the power is a good step as well."
Magnussen is hopeful that Renault can be convinced to bring the updates to Monaco, having originally intended to debut the modifications in Canada.
"Yeah definitely, whether we get it or not, I’d like to have it, but I’m not deciding that," he concluded.