Drift Rather Than Failure Drives Replacement Volume
Measurement error exceeds specified tolerance within around 14 months on typical devices, and roughly 11% of installed units are replaced annually for drift rather than outright failure. A sensor reporting confidently while wrong is worse than one that stops, because the failure is visible and the drift is not. Buyers specifying on accuracy at delivery discover they specified the wrong property, and suppliers whose devices hold calibration across a service life win the repeat specification. Field drift evidence takes years of installed base to accumulate, which favours incumbents over capable new entrants more decisively than any specification advantage does.
Market Impact: Vehicle content rises 7% annually








