Df037 — Renault

On the dyno at Viry-Châtillon, the DF037 produced 1,080 bhp at 11,500 RPM in qualifying trim using 5.0 bar of boost. In race trim (4.0 bar), it produced a reliable 850 bhp. For context, the current 2026 regulations target 1,000 bhp including hybrid systems. The DF037 did it with petrol and pure mechanical aggression in 1986.

While the EF15 was a 90-degree V6 with cast iron block technology borrowed from production cars, the DF037 was designed from a blank sheet of paper. It featured a pneumatic valve return system—a technology many believe Ferrari invented in the 1990s. Renault engineers in 1985 were using compressed nitrogen to close valves at 12,500 RPM, eliminating valve float entirely. df037 renault

Drive-by-wire throttle (standardised in F1 by 2002) was refined on the DF037 to work with Renault’s traction control (legal in 2002-2003). The system allowed seamless torque delivery, critical on the car’s notoriously stiff rear suspension. On the dyno at Viry-Châtillon, the DF037 produced

What made the DF037 so radically different from its predecessor, the EF4? The DF037 did it with petrol and pure