Cadillac’s Austrian GP Nightmare: Repeated Electrical Failures and a Floor Fire Derail the Season’s Biggest F1 Upgrade

Cadillac arrived at the 2026 Austrian Grand Prix with its most ambitious upgrade package of the season — a 10-component overhaul including new sidepods, bodywork, and a revised floor . The American team, still chasing its first world championship point, hoped the parts would close the gap to the midfield. Instead, Friday practice delivered a cascade of failures that left both drivers stranded and the garage scrambling into the night.

The Problems: Two Drivers, Two Distinct Failures

Sergio Perez — Repeated Electrical Failure

Perez stopped on track with an electronics problem in both FP1 and FP2. The issue recurred even after the team replaced his ECU between sessions, leading to a red flag in the closing minutes of FP2 . Multiple outlets confirmed it was the same electrical failure each time, not a secondary issue . Perez set no timed lap in FP2 and finished the day in 22nd .

Valtteri Bottas — Floor Fire

Bottas’s session ended more dramatically. After damaging the suspension and floor of his car, he limped back toward the pits as the rear of the car sparked against the asphalt. Once in the pit lane, the front bib — the leading edge of the floor — caught fire due to heat buildup from the suspension damage, producing visible flames . The fire was floor-related, not an engine or fuel-system issue .

How the Team Responded

Chief Technical Officer Nick Chester acknowledged the lost track time and described the evening ahead as “a whole load of work tonight” — an extensive overnight repair and investigation session to prepare both cars for Saturday .

Yet amid the chaos, Chester saw a silver lining. Early telemetry and driver feedback suggested the upgrade package had delivered a genuine performance step. “We’ve made a bit of a step,” he told the team’s official channels . Bottas had said before the weekend that the new floor and bodywork could be worth “a few tenths” around the Red Bull Ring, though he stressed that estimate was theoretical and dependent on resolving the reliability problems first .

Bottas had been blunt ahead of the event: “We’ve been working on the reliability issues we’ve had in the last two races and I think that’s still the priority as I haven’t finished the last two events” . Those earlier DNFs in the prior two races made Friday’s breakdowns a continuation of a known weakness, not a new crisis.

What It Means

Cadillac’s biggest upgrade weekend so far was largely wasted because the car could not stay on track. The team now faces a familiar question: can it make the parts work reliably before the next race? The performance promise is faint but real. The reliability problem is urgent and unresolved.