Product review (1 stars): Do yourself a favor and don't buy this product.
If I had a chance to give Bosch NO star for their low quality products and horrible customer service, I would gladly do it.

After much debate between choosing Bosch or Thermador, I reluctantly purchased this product to be the showcase of my newly-updated kitchen. My wife and I were very excited to finally use a "semi high-end" brand name cooktop. The installation of our cooktop took too long due to issues finding an gas plumber. We purchased the product in June and it sat in a box until September.
After the second use, I attempted to clean the product by following the manufacturer's exact recommended care guidelines. I used a plastic sponge for washing dishes and dish washing liquid. The surface of the unit immediately discolored and got ruined.
I contacted Bosch's support to complain about the quality of this appliance. They told me that there was nothing they could do for me because the "cosmetic period" had ended.  Bosch has a 30-day cosmetic warranty period. Also they told me that they would not honor the warranty because I did clean the cooktop surface in the direction of the "finished grain" of the metallic surface!!!!! They made up with all sorts of nonsense reasons why they couldn't accommodate my request to exchange the product.
The best they could offer me was to have the top replaced and I would have to pay for the labor cost. Replacing the top would require a town permit,  hiring a gas plumber at $250-$500 an hour and a final inspection.
I am so disappointed in Bosch and its products. I will never buy another product from them. Total rip-off......