Helmut Marko says the FIA's engine development criteria overstate Red Bull's power-unit performance.

Helmut Marko departed Red Bull after a two-decade stint in charge of its junior programme.

Helmut Marko vehemently disagrees with the FIA's ADUO criteria, arguing that even if Red Bull has Formula 1's most powerful combustion engine, it "certainly" does not have the best F1 2026 power unit overall.