F1 has not yet conducted its first on-track test of the 2026 cars. Still, the next big talking point is already taking shape behind factory doors, and this time it concerns engines, energy, and whether the sport’s biggest rule reset in decades could quietly open the door to a significant performance gap. And now, paddock rumors suggest that Mercedes, Red Bull Powertrains, and Audi may have landed on a bold idea that could change how these new engines behave on track.
Turbo Lag Is Suddenly Back in the F1 Spotlight
As teams prepare for the most dramatic power unit overhaul in modern F1 history, engineers are being forced to rethink everything they know about energy recovery and deployment. With the MGU-H set to disappear in 2026, turbo lag is back on the table, and according to growing noise, these manufacturers may already have clever ways to mitigate it.
For years, turbo lag has been almost invisible in F1, thanks to the MGU-H, which helps smooth turbo response by harvesting energy from exhaust gases and feeding it directly back into the system. This safety net disappears in 2026.
Under the new rules, the internal combustion engine and the electrical system will each provide 50% of the total power, which creates a serious risk. If a car runs low on battery energy at the wrong moment, it effectively loses around 355 kilowatts of power. Such a significant drop could make drivers appear vulnerable at the end of long straights.
Some manufacturers have attempted to mitigate this risk by designing smaller turbochargers to reduce lag. The idea is to rely more heavily on electrical power on the straights, thereby reducing lift-and-coast, and allowing the battery to be recharged more consistently.
The problem is that braking alone may not generate enough recovered energy on specific circuits, and that is where the more creative ideas come in.
Clever Energy Thinking by Mercedes and Others
Specific F1 teams’ engineers are reportedly exploring engine maps that allow the internal combustion engine to contribute energy even when the driver is technically off the throttle. During corner entry or through chicanes, the engine can continue to operate in a controlled manner by sending energy through the MGU-K to recharge the battery.
Fans who remember the early 2010s will recognize a familiar theme, as back then, blown exhausts utilized clever mapping to keep exhaust gases flowing even when drivers lifted their foot off the accelerator. That approach was eventually banned, but the concept behind it remains useful.
If this new concept aligns with the 2026 regulations, it would mean that engines could still produce energy during off-throttle moments, providing smoother power delivery, reduced turbo lag, and more consistent performance across a lap.
Mercedes is widely believed to be pushing hard in this area, which is no surprise given its history of innovation in power units. Red Bull Powertrains is also on this rumor list, reportedly receiving assistance from Ford’s technical input.
On the other hand, Audi brings experience from hybrid projects outside F1, including its Dakar-winning RS Q e-tron, which follows the same principle of using fuel to generate electrical energy and could be beneficial in F1 as well.
What is clear is that software and electronic management will be just as essential as hardware, as complex algorithms and advanced control systems will decide how and when energy is used. Some reports even believe artificial intelligence will play a growing role in refining these strategies.
Fans have already begun reacting online, with some even questioning why Ferrari appears quieter than usual, given that they were the ones to initiate the 2026 project first. 2026 will not just be about aerodynamics or drivers adapting to new cars, but also about who best understands how to manage energy in a world without the MGU-H.
