Originally Posted by macnab
Kruiser, I'm eager to hear what you think of it.
Sure, but be aware, I'm a fan of adaptive cruise. I had it on the Mercedes I traded on the Impala (which also has it); and we have it on my wife's Lexus RX 350.
So, after seeing your interest in what I thought, I made a point of driving it to test and seeing how it goes on the Impala. This is based on one 50 mile round trip drive; some use in 40mph in city, down hill; and of course the technology in general per my other cars.
I will say that on the Impala, the cruise is not as accurate as my Mercedes was. I suspect that may be due to the Impala being a lot larger and heavier. My Mercedes was the E350 Coupe.
The Impala has controls similar to the Lexus. There is a button on the steering wheel that you can set the 'gap' between you and the car in front of you. There are 3 settings. The far gap is likely too far for anyone's liking. The middle setting is what I use.
One thing I like about using this cruise, is that it sort of enforces keeping distance from the car in front of you. The closest setting is maybe OK, but closer than I like. But then, it's not as close as a lot of idiots drive on the road
I found that the Impala (I have the 2LZ) has a feature I didn't expect, which was on the Mercedes. I'm not sure if this is because of the adaptive cruise, or if all of the Chevy's cruise controls have this feature. That is, it has a braking feature. It is an attempt to keep you at the set speed, even if going down hill. I have only tested it a couple times so far. I have a fairly steep hill I drive often, and tested it there. The speed limit is 40; cruise was set on 40; it coasted up to 44 before applying the brakes, but it did apply them and slow me back to 40. (JFYI...the Mercedes had the same thing, and as noted earlier, the cruise was more accurate, even in this feature).
Speaking of accuracy, I find that on my car, it will run minimum of 1, and often 2 MPH higher than the cruise is set. Not sure if I should have the dealer look at it or not. Don't know if they can calibrate it.
: One thing to be aware of with this type of cruise control: if you are approaching a car that is driving slower, and you want to change lanes; let's say another car in the left lane passes you, slowly, and you change lanes behind him. If he is moving just barely faster than you, the car will let off the gas to slow down in order to maintain the gap. If the slot you moved into behind the car that passed is small (ie another car relatively closely following him), your rear end might possibly be in for a bump. They won't be expecting you to change lanes in front of him in the 'fast lane', and then slow down.
With that in mind, interestingly, I find that the adaptive cruise serves to keep me more alert (which I think is a good thing). I need to pay particluar attention when changing lanes. I have gotten in a habbit of noticing if I am coming up on a slow car, and planning my lane change. If I happen to not be paying as much attention, after a bit I'll wonder why I'm driving at 60 MPH in a 75 MPH zone...of course, the car has slowed to maintain distance from the car in front.
One of the things I like about adaptive cruise is not having to constantly disengage it, then resume, due to all fo the various speeds people drive.
Now, I'm sure there are others that wouldn't like it; don't want to mess with it; certainly won't pay for it.
Hope this helps you decide which camp you would be in.