Originally Posted by INTMD8

Found this thread in a search. Agree as well.

Cruise control is worthless unless there is no traffic.

Originally Posted by Mitch Alsup

You are cruising just over speed limit on interstate quality road. In about 30 seconds your car will change lanes to pass a semi-truck. In about 25 seconds a car already in the left lane will pass you and start to pass the semi.

Under scenarios like this, as the trailing car passes you, you SHOULD be able to change lanes into his wake. But if you do this, the DP feature slams on the brakes (which is completely unnecessary.)

Now imagine a third car 10 seconds behind the trailing car you are trying to blend in between the two car and all 3 cars pass the semi.
In this case, when DP slams on the brakes the 3rd (innocent) car is put in a difficult situation.

I, too, leave it off 90%+ of the time.

Originally Posted by Mitch Alsup

OK, an example::

a) you look out the rear view mirror and see a car heading your way followed by a second car 10 seconds further back at same speed,
b) you observe that the car will pass you in 20 seconds,
c) you will reach a semi-truck in front of you in 25 seconds,

Any driver can manage this situation:: allow car to pass and pull out right behind him.

The way distronic handles this situation is to see the semi-truck in front of you just as other car passes and slows so you have lost you speed and if you pull out between cars you will endanger the second approaching car due to loss in speed.

Alternately, distronic does not start to slow as the truck is far enough away, but as you pull out behind first car dstronic slams on the brakes and endangers the second following car.

I turner Distronic off because of these situations. It is very annoying.

Originally Posted by superswiss

A bit of an older thread, but playing devil's advocate here. This is a fairly unique situation where it's probably best to take manual control of the car. First off, you can always override DISTRONIC using the throttle. The moment you step on the throttle, DISTRONIC suspends its operation until you let off the throttle again and then it resumes. But perhaps in a situation like this, it's best to hit cancel and take full manual control. Alternatively, DISTRONIC in conjunction with the active steering assist can change lanes automatically for passing when it's safe. All you have to do is turn on the blinker, and then the car will accelerate and complete the lane change for you. It may not do it in a situation like this, though, if there is not enough room to do it safely. Just imagine one of the cars you mention here abruptly steps on the brakes for some reason. I would argue this is a situation where the driver should be in full control, even with regular CC.

DISTRONIC, and cruise control in general for that matter, active steering assist and lane keep assist are as is in their name assistance systems that are designed to take over some of the driving functions while the driver continues to stay alert and in charge. They do not replace the driver and should really not be used when making maneuvers such as the above example. Use your judgment.

Originally Posted by INTMD8

You can't adjust it close enough.

During my morning drive most are doing 80-90mph on 4 lanes, lane changing with maybe 1-2 car lengths gap (at best).

Distronic is literally worthless unless I want to get passed and cut off by the entire world.

It would consist of- I have 6 car lengths in front of me doing 85. Everyone sees this and closes that gap, car brakes and makes another 6 car gap, gets filled over and over.

With regular cruise someone could fill the gap and I cruise along with a few car lengths ahead of me and no constant/excessive braking.

Originally Posted by hyperion667

I FAWKING HATE that! When you're following at a safe distance and EVERYONE assumes that is space for them to get in front of you!!

Originally Posted by MBS63AMG

Yep! These drivers are why we see 3 hour long stalled traffic jams due to their selfish need to get to their destination 3 minutes sooner, causing an epic crash. They are also TEXTING while driving selfishly. These are things that convince me fully autonomous cars are not going to be successful as much as I would love to see it.

Originally Posted by jpaul4

Is it possible to Deactivate dostronic plus while using cruise control. I find it annoying when on interstate and just don’t use cruise control.

Originally Posted by RJPJ

I also find the adaptive cruise control irritating. We bought a GLE450 for my wife, I had my heart set on getting myself a Benz in two years but between the adaptive cruise and the infotainment I am probably going to pass. The adaptive doesn't merely slow down, it brakes hard, it "overreacts" to situations, and it brakes going through mild curves. If I feel I need to slow down going through a curve or when someone changes lanes in front of me I will tap the brakes and disengage the cruise control - I don't need this level of automation. I absolutely can't stand it and I am a big user of cruise control because it helps me avoid speeding tickets.