Ferrari SF-26 analysis: How Maranello’s passive aero trick offers a 0.2s advantage. Ferrari’s SF-26 introduces a variable-blown exhaust system in F1 2026.

F1, Ferrari SF-26: the blown exhaust works differently

In recent days, the term “blown exhaust” has been frequently mentioned. However, this label is not entirely accurate when applied to Ferrari’s solution. As reported previously, Ferrari uses a variable exhaust to generate a certain amount of vertical downforce at the rear of the car. This system is unlikely to be copied by other teams, because the small metal flap positioned in front of the exhaust relies on a regulatory loophole connected to the location of the non-deformable structure.

Technically, a “blown exhaust” refers to exhausts that direct airflow to produce aerodynamic gains. While it might be tempting to link Ferrari’s solution to the effective blown exhaust systems of the past, it is wise to treat these as distinct concepts. The principle is similar—they both use exhaust gases to create aerodynamic benefits—but the implementation differs substantially.

Back in 2011, Red Bull’s blown exhausts were specifically designed for off-throttle blowing, meaning the exhaust gases continued to flow even when the driver lifted off the throttle. In simple terms, teams like Red Bull managed to maintain high-pressure exhaust flow during deceleration, generating extra aerodynamic load even while braking. These exhausts were thus “blown” because they actively produced downforce off-throttle. Ferrari’s SF-26 does not replicate this dynamic. As explained in the analysis of Ferrari’s variable exhaust, its aerodynamic benefits are only partial.

How Ferrari’s system works in practice

In reality, the maximum benefits are achieved only under full acceleration, when the car’s power unit operates at peak output. During braking, for instance, although the exhaust still releases gases, the energy produced is minimal and does not provide comparable aerodynamic gains. Between 2010 and 2013, teams relied on specific engine maps for continuous exhaust blowing, which made the system “active.” Ferrari’s solution, on the other hand, is “passive,” as it does not rely on any special combustion engine mapping.

This approach demonstrates careful engineering foresight, as Ferrari’s technical team designed it from the early conceptual stages of the SF-26 project. Naturally, fans and rival teams are eager to see how this potential advantage translates onto the track.

Ferrari SF-26 variable exhaust: how much could it actually improve lap times?

First and foremost, any theoretical advantage must be validated on track to move from subjective assessment to objective measurement. According to information collected directly from the Bahrain pit lane, Ferrari’s variable exhaust system does work, although it remains to be optimized and assessed across different circuits in the championship.

If simulations align with on-track performance, the system could deliver crucial additional downforce, particularly during acceleration phases. However, this type of aerodynamic appendage does not retract at high-speed sections, meaning it continues to generate drag on straights. The exact level of drag it produces can only be determined by the Ferrari team after real track testing at Sakhir.

Still, it is possible to estimate the potential lap-time gain. Insights from engineers present at the tests suggest that, regardless of the track, Ferrari’s variable exhaust could be worth up to two-tenths of a second per lap. This is a significant margin, especially considering that this solution will be very difficult for other teams to replicate. Fans will have to wait until the first race weekend for more precise estimates of its on-track impact.