I am new to the forum because I just got my first jetta (2007 2.0l CITY model) and have had something weird come up. I checked through some of the other posts in this forum and could not find an issue exactly like mine—if there is, I'd love to know where to find it In short, I am losing power over ~3100 RPM regardless of speed (SAFE mode?). I do have a CEL light on due to needing a thermostat and temp. sensor (according to the dealer)... IS this something that would throw the car into SAFE MODE? The car drives fine and sounds normal below 3100RPM, and I can get it up to around 110kmph below3100RPM. However, once I hit 3100RPM I lose power and the sounds of the engine changes and can put the pedal to the floor and the car slows to around 60kmph with a steady 3100RPM. If I let off the the pedal for a bit then the engine becomes responsive again and I am able to accelerate again up to the same 3100RPM. Rinse and repeat.