Formula 1’s 2026 overhaul: new fuel flow meter tested in Abu Dhabi

Abu Dhabi (The Uttam Hindu): This week’s Formula 1 post-season test in Abu Dhabi marked the first real-world outing for the new fuel flow meter, set to be introduced in 2026 when F1 adopts 100 percent sustainable fuel. Developed by Allengra the new device was installed in cars from Mercedes, McLaren, Williams and Sauber during the test at Yas Marina Circuit. The fuel flow meter is crucial in regulating the amount of fuel sent to the combustion engine ensuring that no team gains an advantage by exceeding the fuel flow limit. F1 is set for a major overhaul of its power unit regulations in 2026, which includes upgrading the electrical components of the powertrain and reducing the role of the internal combustion engine. A significant shift will also see the championship switch to 100 percent sustainable fuel which will be supplied by different partners working with each power unit manufacturer. Along with these changes Allengra has been chosen as the exclusive supplier of the FIA-approved fuel flow meter from 2026 to 2030 replacing Sentronics.

The purpose of the Abu Dhabi test was to collect initial data on the performance of the new meter which had already undergone static dyno rig testing. Both the FIA and Allengra were pleased with the results, noting that the device worked reliably and provided accurate measurements with an essential requirement of maintaining +/- 0.5 percent accuracy. This test marked the first time the meter had been used in real-world conditions providing valuable data for further improvements. Currently F1 cars are equipped with two fuel flow meters: one for team use and another for FIA monitoring to prevent tampering. The new meter, set for 2026, will combine the functions of both. During the Abu Dhabi test the Allengra meter replaced the FIA meter while the team’s existing meter remained in place. Data from the Allengra meter was transmitted privately to the FIA ensuring no interference with the team’s readings. Although all ten F1 teams were offered the chance to participate in the test, only four teams took part, as adapting the cars to accommodate the new meter involved significant time and resources. The test used the 2024 E10 fuel but the 2026 fuel flow meter will be calibrated for the advanced 100 percent sustainable content fuel which includes new bio-sourced and synthetic components. While further testing with the current generation of cars is unlikely until 2026 the FIA and Allengra are working on compatibility testing with the new fuel. As F1 moves toward a more sustainable future, the road ahead promises more challenges and opportunities for innovation.