One of the biggest questions raised by Formula 1’s tweaks to the 2026 rules revolves around the knock-on consequences on lap times.

F1 announced a raft of rule changes on Monday in an attempt to improve the much-maligned regulations and ease driver safety concerns.

In a bid to improve the qualifying spectacle, F1’s governing body has reduced the maximum permitted recharge from 8MJ to 7MJ to limit excessive harvesting and encourage more “flat-out” driving.

This was in response to one of the biggest bugbears from drivers who felt that the enjoyment and challenge of qualifying was being taken away by the requirement to top up battery levels.

But the changes come at a cost and qualifying laps will be slower as a result of reducing the amount of power that can be recovered around the lap. The loss will mainly be felt under acceleration onto long straights.

However, the lap time loss is expected to be “relatively small” and only “a few tenths, if that”, according to McLaren performance technical director Mark Temple.

“It's a little bit track specific, so in qualifying as we saw in that example, it comes a little bit from loss of some deployment on the straights,” Temple told media including Crash.net on Wednesday.

“In the race, we've got a reduced level of power in regions of the track that don't include a straight mode zone. So we will lose some lap time in those, but then actually also you use a little bit of energy there, and you use that energy elsewhere.

“So two or three tenths, but it is track specific.”

Will overtaking be impacted?

One concern is that the type of fluid racing seen across the opening three races may be lost as a result of capping the maximal power available through the Boost mode.

Under the tweaked rules, the deployment of electrical energy will be reduced by 100kW in areas of the circuit where overtaking is less likely, such as flat out corners, while maximum 350kW deployment will be kept for areas where overtaking is deemed most likely.

McLaren is confident that overtaking will not be negatively impacted, though more “opportunistic” moves may be less common.

“In those areas [where deployment is reduced], then it will be harder to overtake. And that's really the intent, because the judgement is that if there's not a straight mode there, then it's a less appropriate place for overtaking,” Temple explained.

“The other change is applicable everywhere, which is that now if you do a late boost, so as the power peaks at the start of straight and then starts to ramp down, previously, if you pressed the boost button, you would get the full 350 kilowatts. Whereas now that's reduced so that you either maintain the power level that you have dropped to, or if you're below 150 kilowatts, it will come back up to 150 kilowatts.

“You still get a speed increase, but it's less rapid. So you can't build as much of a speed advantage. You still build a good overtaking opportunity, but it's built more progressively because you have less power.

“So I think we will see less chance of maybe opportunistic overtakes in some of the more unusual places. But I think that's the right compromise for safety. But I think on the main straight, it will be largely unaffected.

“You could still have a car that is essentially doing a bad job of overtaking and using too much energy and then being re-passed on the next straight, which personally I actually think is quite a good thing, because it forces a little bit more of a strategic element to overtaking.

“The driver has to think more and it will reward the drivers who are thinking about and learning from and optimising what they're doing.”