14% of 113 verified Comandante C40 MK4owners don't recommend it — based on real owner comments from Reddit, enthusiast forums, and YouTube.
For balance: 69% recommend it. This page collects the complaints so you know what you're signing up for — read the full owner report for both sides. How we score
“I still have my C40, but now I have a ZP6 and prefer that for hand grinding.”— @TCMx3 on YouTube
“the Commandante would unfortunately be a tough sell for me”— @rainsoakedpuppy on YouTube
“doesn't worth it at all”— @The_Coffee_Rabbit_Hole on YouTube
“300$ hand grinder, internal adjustment and I need to buy an upgrade kit to actually use it?”— @niklas8523 on YouTube
“it taste richer than C40; it feels way premium than C40”— @mtpastor4546 on YouTube
“imo nobody should buy this thing anymore”— @Leowulfs on YouTube
“Did you say some people prefer the interbal adjustment where you gotta count the clicks? That seems crazy!”— @BensCoffeeRants on YouTube
“1zpresso basically killed the C40.”— @idjekyll on YouTube
“The K6 is absolutely better in every single way compared to the C40”— @evaDsselesU on YouTube
“too many more interesting options out there that provide better build quality and better grind quality at a lower price point for me to ever consider or recommend the C40”— @Abrikosmanden on YouTube
“Every 1zpresso grinder beats C40 in every department.”— @littlestar5737 on YouTube
“The price is clearly inflated, I bought it only because it was made in Germany”— @macallan-e5e on YouTube
Not complaints — practical notes from owners that didn't affect the score.
“Their marketing pitch about "specializing in high-density beans", at same time J-Max struggles with those. It also helped that the Hammerhead is one of my favorite animals...”— wonderonce on Reddit
“I’ve been grinding so coarse because any time I grind finer, I get an insane amount of bitterness. Im pretty sure that this coarseness (62 red clicks) is me compensating for the additional fines”— PurpleSamurai0 on Reddit
“It looks like your grind is way too course from the picture. If it’s that course you’re just going to have bean chunks and fines. Try grinding roughly the consistency of coarse sand or coarse salt.”— Interesting-Month-97 on Reddit
“Cool , this is is how commandatnte grinders should look out of the box by now. The external click upgrade looks great , this was the reason i never got a commandante since internal clicks annoyed me”— BreakdownEnt on Reddit
“Your J-Max was seasoned for 3+ years, and your C40 probably didn't even go through 1kg in a month. The pretext of the comparison is not fair, but I'm surprised you still chose C40 at the current state.”— Mazdacxcx on Reddit
“With a strongly light-roasted coffee, a Hario 1200ml and good-quality water (1200ml/80g, 1:15, 14–16 hours at room temperature), the C40 RC settings are 60 clicks (or 58 for acidity, or 62 for sweetness).”— Jaq71_ on Reddit
“Maybe try to adjust the temp down, add a splash of water to the kettle after boiling for example or wait a few seconds for the water to slightly cool down”— TotalStatisticNoob on Reddit
“Think I just need to adjust my expectations when it comes to draw down times. I'm at 4 minutes with 30g and it still tastes under-extracted so I trim I need to grinder finer still.”— eamonneamonn666 on Reddit