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

Hamilton ally Marc Hynes joins Cadillac F1 team

Lewis Hamilton may be the headline magnet, but it is his former right-hand man Marc…

1 hour ago

Norris: More F1 titles possible – but peace already secured

For Lando Norris, the number “1” is no longer an aspiration painted in imagination –…

17 hours ago

Cadillac buoyed by ‘strong team spirit’ ahead of F1 debut

Cadillac’s long-awaited arrival on the Formula 1 grid is no longer a distant promise –…

19 hours ago

Vowles notes Ferrari’s consistency, but questions SF-26 pace

Williams team boss James Vowles may not have had a car circulating at last week’s…

20 hours ago

McLaren unleash its IndyCar trio of 2026 contenders

Arrow McLaren has pulled the covers off its 2026 NTT IndyCar Series trio, unveiling all…

22 hours ago

The last of Grand Prix racing's privateers

Turning 70 on this day is Hector Rebaque, who was Mexico's last F1 driver for…

22 hours ago