How many lambda sensors are there on a BMW z3 2.8?

The BMW Z3 2.8 typically has two lambda sensors, also known as oxygen sensors. One sensor is located before the catalytic converter (upstream), and the other is positioned after it (downstream). These sensors monitor the exhaust gases to optimize the fuel-air mixture and ensure emissions compliance. However, it's always a good idea to check the specific model year and engine configuration for any variations.