The design is flawed (not well considerd). By that I mean having the four cooking areas controlled by a single small command area is ok when there's just one pot on the surface. But when you have several pots on the go at the same time it is not easy to see which 'ring' you are controlling. The only difference is that one power level indicator is slightly more brightly illuminated than the other three. I can see why the designers went down this road; to allow more space for the pots on the surface. But honestly, it's not easy to use at all. Separate power level controls for each 'ring' would be much better.
Also, It is hard to know if the boost function is on.
The touch controls for heat control are too small and relatively slow to react.
The level of heat needs to be changed often. For example yesterday I made pasta with tomato sauce. I brought the tomatoes to a gentle bubble on power level 6. So far so good. Then when bubbling I turned down to 5. Still ok. But then during the total cooking time of about 25 minutes each 5 minutes or so I had to adjust the temperature down, after 5 minutes to 4+, then after another 5 minutes to 4, then after another 5 minutes to 3+ etc etc. I ended up being on power level 2 for the same level of bubbling as I initially had at power level 5. Surely, that's not normal. It means that you have to stay close to the cooker the whole time to adjust as necessary. It should be possible to get correct bubbling level and leave the room for a while.
The last thing I can think of is the timer function. Good idea but annoying in practice. Fine for just one pot but not when there are several 'rings' on the go at the same time. Towards the end of cooking the tomato sauce I started up a pot of water for the pasta. The water came to the boil and I put the pasta in and pressed timer for 6 minutes. The display counted down (before it disappeared from view) and when the 6 minutes were up the whole machine (every 'ring') turned off. But you often don't want this to happen. It's often the case that you want another 'ring' to stay on to keep another thing warm. And then things get very annoying as you have to switch the machine on again and in haste/slight panic the 'ring' you want on jumps up to power level 9 and then that pot starts boiling over/overheating and things get very messy. Also during the cooking of the pasta I also had to regularly adjust the" temperature to get the correct bubbling level as described above.
Bosch representatives at 'Batibouw' admitted that the unit has inferior induction units
So to conclude, this product is not worthy (does not merit) the Bosch name and I would not advise anybody to purchase it.
In case you are wondering, I did not write all this specifically for this review, but copied it from a mail to Bosch.be
Oorspronkelijk gepost op bosch-home.com