Originally Posted by rdboxster

An update after 4500 miles with 1800 miles coming on a recent trip to Florida, escaping the cold. We averaged close to 21 mpg for the trip. The GTS is a very comfortable road car. The storage area actually seems to hold more than the 2016. The rear seat backs adjusting to almost 90 degree upright is a big help. The massage seats are great to have with the long days in the car. The second day was over 700 miles so the massage function was used regularly. The driver assist functions, ACC and ALKA, were a great help also. Never turned on PID 😬.

Some thoughts on ACC: most of the time ACC works well both on open road and in congestion. As others have stated there is some cautions. Leaving too much space is an invite for someone to move in between causing the ACC to slow the vehicle, and depending on space, brake to aggressively slow down to increase the gap. Adjusting the gap to minimum helps deter this activity but I found at times it’s not enough space for the vehicle to brake for stopped traffic. This wasn’t an issue until I started south on I75 in Florida. As many know I75 can be an adventure, think chase scene in Road Warrior. You can be going 80+ and all of a sudden traffic stops. ACC is a bit slow to pick this up as it reacts to the vehicle in front. The gap closes very quickly which causes very hard braking. The 2nd setting helps but still difficult for ACC to react. Most of these instances I had to manually brake since I could see the brake lights several vehicles up. Is this an issue with any drive automation, reading conditions further down the road? While these features are nice to have i cannot totally rely on them. As the message says “please take over steering”.

Originally Posted by rdboxster

An update after 4500 miles with 1800 miles coming on a recent trip to Florida, escaping the cold. We averaged close to 21 mpg for the trip. The GTS is a very comfortable road car. The storage area actually seems to hold more than the 2016. The rear seat backs adjusting to almost 90 degree upright is a big help. The massage seats are great to have with the long days in the car. The second day was over 700 miles so the massage function was used regularly. The driver assist functions, ACC and ALKA, were a great help also. Never turned on PID 😬.

Some thoughts on ACC: most of the time ACC works well both on open road and in congestion. As others have stated there is some cautions. Leaving too much space is an invite for someone to move in between causing the ACC to slow the vehicle, and depending on space, brake to aggressively slow down to increase the gap. Adjusting the gap to minimum helps deter this activity but I found at times it’s not enough space for the vehicle to brake for stopped traffic. This wasn’t an issue until I started south on I75 in Florida. As many know I75 can be an adventure, think chase scene in Road Warrior. You can be going 80+ and all of a sudden traffic stops. ACC is a bit slow to pick this up as it reacts to the vehicle in front. The gap closes very quickly which causes very hard braking. The 2nd setting helps but still difficult for ACC to react. Most of these instances I had to manually brake since I could see the brake lights several vehicles up. Is this an issue with any drive automation, reading conditions further down the road? While these features are nice to have i cannot totally rely on them. As the message says “please take over steering”.