Might be regional/market differences, but my USA model DRCC changes speed by 1 mph with clicks on the adjust lever. Speed setting is displayed in the dash while adjusting; so, no problem to set an exact MPH in DRCC mode.
My UK model changes speed of DRCC by 5mph. Must be regional difference. Posted via the PriusChat mobile app.
Interesting. Thanks. Given the regional differences, I wonder if this is hackable. Posted via the PriusChat mobile app.
Here, it's 1km/h (or 1mph) with every push of the lever. If you push and hold the CC stalk, it goes in 5km/h (or 5mph) increments. I say "or" because it depends if you're in km/h or MPH mode in my Gen 3. Can't check with the Gen 4 because it's missing the ability to change to MPH.
I can't figure out why anyone would NOT want to use the DRCC. I use it all the time and it's my favorite thing about the car next to the gas mileage and the looks! (Yes, I like the look of the Gen4!) It's a great feature. It follows traffic almost perfectly. I still have to watch and be vigilant, but I no longer have to turn cruise control off and on when traffic gets too heavy. Not do I have to constantly adjust my cruise setting due to traffic slowing or speeding up. I just set an ideal speed and let it do the work. The worst possible case would be when traffic is going along at 70 mph and then suddenly we have a huge slow down or complete stop AND I don't have a car directly in front of my that the DRCC is following. In that case, I think it would react too slowly. So, I stay alert and watch traffic so I can use the brake myself and slow the car before the DRCC does. This is not a regular occurrence, though. So, the reason I can't see why I wouldn't use DRCC is because you can still take over control any time. What is the benefit to not using the DRCC? I can use the pedals to accelerate even WITH the DRCC engaged and it takes over again after I let off the accelerator. I can use the brake to slow or stop the car and the DRCC disengages. I can use the levers on the steering wheel to adjust speed. If people are afraid to trust the car, then you probably should not buy the Prius. It's a bunch of computers on wheels! I think the steering wheel is the only thing that's still truly physical and directly connected to the wheels. The brake pedal might be, too, but I suspect it's just a button that controls the brakes. And the accelerator is definitely just a button. So, if trusting computers to do their job bothers you, then the Prius is a bad choice.