A big weakness in Mercedes’ new Formula 1 upgrade has been exposed after a demanding race weekend.

The aerodynamic and mechanical updates failed to deliver the expected gains.

Aerodynamic instability appears to be a primary culprit hurting lap times.

A split strategy for George Russell and Andrea Kimi Antonelli in Singapore gave mixed results.

Problems included unpredictable tire wear, balance shifts in fast corners, and weak rear stability under braking.

Wind tunnel data also failed to match what happened on track.

Team leadership admitted the new parts did not perform as predicted in real racing.

Factory simulations are trying to replicate the problems seen in Friday and Saturday practice.

Read the full article for more details on Mercedes’ upgrade problems.