We completed a large scale kitchen remodel with high end architect and construction company. We heavily researched 36" gas ranges and selected a Miele 36" gas range because we do a lot of baking and because of the self-clean function. The oven doesn't reach temperature. We have to use an oven thermometer and constantly adjust the temperature to bake. The gas takes a bit to come out and once it does, it comes out with a vengeance and the burners click for about a minute every single time you turn it on. This has happened since the first day it was installed. Like the OP, we also hear the loud noises during baking. We have had 5 repair people out, including Miele reps and still no resolution. But- the worst part has been the same as the OP- scorched backsplash. The manual for the gas range has changed since we received the range- our manual does NOT mention anything about vapors, scorching or trim. The architect/designer and construction company have had multiple people through our house to figure out what is going on and all point fingers to the range. We even asked about a backguard. When we brought this to Miele's attention, they blew us off. After using the self-clean function, our tile backsplash looks like a mess. We don't know how to resolve the issue because the oven doesn't work properly and the backsplash issue isn't a quick fix. We aren't blaming anyone. We just wanted to share our experience and hope that maybe someone might have some constructive comments to help us come up with a solution.

This thread has been very informative for me as we are just starting a kitchen reno, so thank you to all contributors. We plan to do a quartz backsplash, including behind a 30" wide residential gas cooktop (not a range or stove). Please bear with me as I continue to explain! I looked at the specs of the cooktop I was planning to order. Based on those specs and assumption the new quartz countertop depth is 25.5" (I know assumptions are risky, but since 25.5" is what we have now and considered standard, I'm going with that for this example), my calculations are: 25.5" (countertop depth) - 21.25" (cooktop depth) - 3" (min distance from rear wall) - 1.875" (min distance from counter front) = -0.625" Which means I'm 5/8" short, and this isn't taking into account the thickness of the quartz backsplash, which I believe should not be included in the 3" from rear wall guideline from the cooktop manufacturer. Sorry if I'm hurting anyone's brain with math today! Just looking for some validation my logic is correct in how I should be calculating. And also curious if my belief the distance from the rear of the cooktop to the front of the quartz backsplash (not wall) should be 3." I plan to look for a different cooktop, hopefully one that is closer to 20" deep and add the backguard just to be safe (thanks to @Elizabeth Alvarez Sell for sharing her backguard photo)!

Your range's installation manual will have the clearance requirements for your range. I pulled the cheapest 30" Samsung range off home depot and looked at it... it said it was designed for maximum wood cabinet temperature of 194 deg but you need to make sure your surroundings (i.e. your quartz) can handle it. The installation manual specifically says that discoloration or melting can occur (this is probably a CYA statement due to the number of people who put quartz backsplashes  behind their ranges and ended up with scorched  quartz.

@shadyks2 LOL that's what I've been telling myself! Thanks for the affirmation. I hate cleaning grout and knowing us, I don't think we'd do a good job of it. We are in for having to have an entire bathroom regrouted because it is in such bad shape (partially from hard water stains and partially because it wasn't done properly the first time when the previous owners did a D+ job on the tile/grout) and I know that's not cheap and certainly isn't what you want to do in a kitchen in 5 years or whatever. @bpath we aren't very exciting on any of the style fronts, to be honest. We have an older 1900s foursquare home in a small town in Iowa, so going super trendy wouldn't really work anyways or fit with our home. I like midcentury modern, husband is more a fan of traditional. We finally found middle ground in the ever popular white shaker kitchen and and are doing a white oak island....I'm pushing for simple clean lines since the majority of our house is a fair bit more traditional (lots of original woodwork, warmer paint colors, etc) so that it doesn't look completely out of place but also appeals to my desire for "clean" visual space. We have SO much color and wood in the entire rest of our house, I want lots of white. We can be trendy with pieces like our chairs/stools, lighting, and smaller decor (that's my thought). The white oak island is quite a bit different than the direction i thought we'd go (we have original solid quarter sawn oak pocket doors we thought we'd match) but I think it will be a nice surprise and look good!