Heat-soaked automatic transmissions
Stop-start traffic followed by a loaded climb means the gearbox works while it is already hot. On conventional autos we look for delayed engagement, flare between shifts and burnt-smelling fluid. On the CVTs fitted to so many cars here we look for the light-throttle shudder between 30 and 60 km/h that signals belt and pulley wear, and we scan for stored ratio-error and slip codes even when the seller has never noticed a symptom.

