When slowing almost to a stop, and then need to accelerate, such as slowing for a yield sign, then trying to merge, vehicle is non responsive to throttle input for at least a second, or more. This has put me and others at risk because I assume I'm going to be able to accelerate when pull into traffic and am not able to. The dealer has had the vehicle but was unable to reproduce. It does not always do it, there's some combination of engine, drivetrain or fuel management it's in that does this. I have disabled start/stop mode. There are no system messages or OBD errors. The dealer has said that others have experienced this and the manufacturer has told them it's "normal". It's a safety problem and I'm seeking help in getting the manufacturer to fix it. Note, I sent the attached letter to manufacturer and did not receive a reply. I called their customer support line around Sept 20th and they did not offer any escalation or other action to address other than writing to their email address. I did this, and received no response.

- Saint Louis, MO, USA

Upon completion of modifications due to Volkswagen/Audi/Porsche 3.0L diesel emissions settlement program the vehicle has an intermittent delay when accelerating. This delay is unpredictable and can be several seconds in duration. Once acceleration is applied it is too much power and again unpredictable in results. Appears to be related to outside temperature. Over 80(F) is when most troublesome. When crossing intersections and accelerating to get on the highway is when the safety aspect is obvious.Porsche has stated this is a normal aftereffect from the modification and my vehicle is working within the parameters set forth by the carb agreement.

- Easton, PA, USA

Car lost all acceleration and engine shut completely off happens frequently. Car on separate occasion sieved and shook violently to a stop on the road multiple times.

- El Paso, TX, USA