When driving in any standard driving mode, when you start to come to a stop with auto S/S enabled (e.g. slow down) to less than 6mph, then accelerate again, there is a considerable lag for the vehicle to start accelerating again (about 1-2 seconds). This is especially dangerous when making left turns when there is cross traffic as the vehicle often drifts into the intersection and you can't quickly accelerate away. Have had many close calls and the issue is easily replicable on any 2019 Q8.

- Pittsburgh, PA, USA

The vehicle has major throttle lag from a stop state of the car, if you are not aware, the vehicle will lag on acceleration and sudden jerk forward at full speed which is a major safety hazard if you are not paying attention. The turbos take too long to send power to the wheels and result is sudden acceleration.

- Las Vegas, NV, USA

Throttle lag from a near (but not full) stop. If coming to rolling stop, from 1-8 mph, and then hit accelerator, the car engine revs but no acceleration to vehicle. After a 2-3 second delay, car will lunge and accelerate normally. Scary when need to accelerate from a near rolling stop. Left hand turns especially dangerous. Explained issue to dealer, and Q8 car forums have same issue. Dealer says functioning "normal", which I disagree it is not. I have tried all settings for start/stop, transmission settings, etc., and nothing fully alleviates the problem. This is not episodic and a consistent, reproducible dangerous issue.

- Hillsborough, NJ, USA

There is a noticeable throttle lag (hesitation) when the auto start/stop feature is enabled, and the car comes out of a rolling stop (ex. When making a left turn). Disabling the auto start/stop feature or selecting sport mode negates the issue.

- Evanston, IL, USA

Excessive and dangerous delay in throttle response due to auto start/stop system causing vehicle to coast when slowing down at a yield sign or intersection etc before transmission re-engages. The vehicle is powerless for several seconds despite application of gas pedal, causing oncoming traffic to potential collide with "stalled" Q8. This is a major design defect in the auto start/stop system and occurs every time the system is active.

- Park City, UT, USA