Eric Boullier says McLaren-Honda still has “a long way to go” in order to match the horsepower of the Mercedes engine, the clear benchmark in the latest 1.6-litre V6 turbocharged era.

Having endured a torrid reunion in 2015 amid poor power unit performance and reliability, the British team and Japanese manufacturer have made noticeable headway in the off-season but their package remains off the front-running pace.

Indeed, McLaren has yet to place any of its MP4-31 in Q3 this year and only has one point in the bank, courtesy of reserve driver Stoffel Vandoorne’s 10th-place finish in Bahrain.

“As soon as our rivals turn up their engines, it becomes very difficult for us,” Boullier told French magazine Auto Hebdo. “For the season-opening race in Australia, we actually had less horsepower than in Abu Dhabi last year and we got it back in Bahrain. In the mean time, the other teams have not been hanging about.”

We know, for instance, where Mercedes is at the moment because we have the numbers and I can tell you we still have a long way to go.”

Auto Hebdo also reports that McLaren sent European engine engineers to Honda’s facilities in Sakura, Japan last January in a bid to help its engine partner.

Since then, they have been working in collaboration with their Japanese colleagues on a brand new power unit upgrade, quite different from the current specification. The evolution will be ready for the Canadian Grand Prix at the earliest, or the British GP at the latest.

“It’s a mixed solution, which should enable us to have higher ambitions in the second half of the seasons,” Boullier added.

According to Auto Motor und Sport, Honda would be currently working on a spark ignition trick that Mercedes has successfully pioneered. The German-language publication adds that the new engine will only be fully ready by 2017.

Chris Medland's 2016 Russian Grand Prix preview

FEATURE: Silbermann says... One 'Flu and he's cuckoo at best

F1 technical - How does ERS deployment work?

Keep up to date with all the F1 news via Facebook and Twitter

Julien Billiotte

Recent Posts

Cadillac looking to build on Miami momentum in Montreal

Cadillac arrives in Montreal this weekend carrying more than just fresh optimism – the American…

2 hours ago

Norris puts Le Mans on bucket list as McLaren builds Hypercar era

The horizons of the motorsport world are expanding rapidly, and reigning Formula 1 world champion…

17 hours ago

Red Bull sees Montreal as ‘another good test’ of RB22 progress

After a challenging start to its 2026 campaign, Red Bull Racing heads to Montreal quietly…

18 hours ago

Brundle says Russell must 'stop Antonelli in his tracks’ in Montreal

George Russell entered 2026 expecting to lead Mercedes into Formula 1’s new era. Instead, five…

19 hours ago

Ben Sulayem slams F1 critics: ‘Only teams behind are complaining'

Mohammed Ben Sulayem has delivered a blunt message to Formula 1’s grumbling teams over the…

21 hours ago

Remembering Niki...

Seven years ago today, Formula 1 and the motorsport family at large mourned the loss…

22 hours ago