DSLR frustration

:((

Because my old EOS 550D has sensor errors and i would enter full-frame shooting i ordered the EOS 6D.
I have several expensive Canon lenses, so another brand isn't interesting for me. While usually using a camcorder i will have a DSLR especially for nightshots, timelapses etc.
In case of my existing lenses i ordered only the body. Luckily i exactly know what to test at first and made the sad experience that

a) the sensor is dirty and a lot of dust points are visible in clouds photos shooting with F/22
b) the sensor has dead pixels (white and blue points) by long exposure shots with 10sec and more and higher ISO (1600)

Now i have send it back / retoure to the dealer and he send me another new EOS 6D with the promise that his cameras are new (never used) and he can't explain this problems.
Now, what shall i say? The new replacement camera which i got today has the same problems! Dirty sensor, dead pixels!

Anybody else who had such f...... experiences with a new DSLR body?

If you shoot light blue sky at f22 most if not all cameras will have dust bunnies showing. Check it at f10 where most of your shooting will be at. Look at 100% don't do any processing to exaggerate the dust. If it's visible at f10 then you will have problems. On a photo it's an easy Photoshop fix, video is much more difficult. Dead pixel that is tough. Many manufacturers say that one or two dead pixels is acceptable. Keep buying from a reputable dealer who will allow exchanges at no cost. Good luck.

My new D750 has soon got dust on the sensor. Sadly it's part of the territory. New cameras I have been told are particulary prone for some reason.

The factory is not in a dust-free environment! :(

May be Canon want to save cost so quality is not in their first priority.

Where did you purchased it?
A friend of mine broke his mirror a the first shooting of his new 6D( he was just switching to the video mode ), Canon replace it.

I buyed at a 5* rated online dealer here in Germany.
While dust can be removed by professional cleaning, the dead pixels can not. It's no solution to make compromisses at this.
a) When using the DSLR for video of airshows i won't see steady dirty dots in front of the moving clouds, and
b) when making nightsky star timelapses with minimum 150 shots i won't stamp (repair) every single shot for this job.

Now i ask me if it's better to avoid buying older camera models and wait for an absolute factory new model,
or if Canon has it's production in old dirty asian barns.
The dust problems i know from my first DSLR. I trashed a complete video session at International Air Show with it. Since that day i make video only with camcorder.

"if Canon has it's production in old dirty asian barns."

Since so many scandals with our own food and VW etc, I wouldn't curve the Asians anymore.
Maybe "if Canon has it's production in old dirty Fukushima barns." LOL

Return it, that is all.
I had 2 dot (dead pixel) in my compact camera once before. I just live with it. All QC passed. Dust on sensor is a different case.

I've had dust bunnies on new Canons and I have friends that had dust bunnies on new Nikons. I had a dust bunny on a new very high end Sony 4K video camera also. The best is check it out quickly like you did and return it. I don't think a more expensive or newer camera will be any better luck. ;(

Having done a lot of long exposure nighttime time lapses, I have come to the realization that dead pixels is something you will always have to deal with. I have had that problem with all my cameras (550d, 60d and 5d iii). There are a couple things you can do however. The first is super easy. The new adobe lightroom seems to automatically remove the dead pixels without having to do anything which has been awesome. You can also remap the dead pixels so that they are not within the frame. I can't remember the steps to do this but you can google how to do it. Its not hard.

Yes, i return it tomorrow and get my money back. A little bit dust wouldn't be the big problem because i can be cleaned, but the dead pixels at long-exposured shots are not acceptable for a new camera. My old EOS 550D got this after 5 years, before i never had this.

As i need a new DSLR so or so now i ask me if it's less risk to buy direct from CANON online and pay more? Can it be that the cheaper dealers get b-ware from Canon?