Schaeffler Starts Volume Production of Gasoline NOx Sensors as Euro 7 Nears

Schaeffler has kicked off series manufacturing of nitrogen oxide (NOx) sensors designed for gasoline engines in Europe, a move aimed squarely at automakers bracing for the incoming Euro 7 emissions regulation. Until now, NOx sensing has largely been a diesel-domain technology; the supplier is now transferring that expertise to petrol powertrains in search of fresh revenue within the combustion segment.

The new sensor monitors NOx levels continuously in real time and, depending on how a given exhaust system is configured, can also help manage after-treatment. Beyond the NOx reading itself, the unit produces a lambda signal that reports the oxygen content of the exhaust gas. Schaeffler notes that feeding this combined data into an after-treatment controller could allow smaller catalytic converters, lower loading of precious metals and the elimination of separate lambda sensors — a meaningful cost lever for gasoline programs under pressure from tighter rules.

Euro 7 widens the regulatory lens beyond laboratory test cycles, covering real-world on-road emissions and the durability of emissions systems over a vehicle’s full service life. That pushes engines and exhaust after-treatment to cooperate closely across a far broader range of operating conditions, which in turn lifts demand for continuous measurement rather than periodic checks. Schaeffler is positioning its gasoline NOx sensor as a direct answer to that requirement.

“The start of production of our NOx sensors contributes to one of Schaeffler’s fundamental goals: delivering reduced emissions regardless of powertrain type,” said Matthias Zink, Chief Executive Powertrain & Chassis at Schaeffler AG. He added that the company views sensor technology as a strategic growth field, with the aim of giving vehicle manufacturers precise, intelligent and scalable tools for efficient and reliable emissions control.

By adapting hardware it already sells for diesel applications, Schaeffler keeps combustion technology relevant even as electrification advances. The approach underscores a broader industry reality: as emissions rules tighten, suppliers are finding new value in the components that keep internal combustion engines compliant rather than abandoning them outright.