Timo Schroeder

Too high carbon monoxide level at m.o.t. I was today past the local vehicle control test center, in connection with the import of an S500 with M278. And it did not go quite well, when measuring carbon monoxide, at idle the values ​​are well within the range, 0.01 ppm but at acceleration the values ​​rise to over 1.0 ppm., what I thought is quite normal, but ... I do not know what that means, but I got my m.o.t though with a little warning! Is the above a normal picture with the M278 engine? I had put the car in ECO program and "sport" there is octane 95 in the tank. I have a hard time understanding that there might be a possible problem with the car's catalytic converters, as I have no error messages, and the car is otherwise running perfectly excellent.