Bauknecht in USA (lavamat 78800)
Bauknecht makes the large Whirlpool Duet, KitchenAid Ensemble (no longer sold as KA, now it carries a Maytag label), and new Maytags. The largest models supposedly have 4.0 cubic feet drums. If we take your 12 kg number and multiply by 9 liters/kg that most people here have estimated, it comes to about 98 liters. LG also sells 4.0 cu ft/12 kg machines in USA.
My estimate for my 3.5 cu ft washer was about 83 liters and an estimate of 10- kg capacity (though machines in US are not sold these days with a weight capacity...I do recall seeing weight estimates for top loading machines until the mid 1990s). The Bauknecht machines are 15% larger (4.0 vs 3.5 cu ft) and thus the kg capacity would be about 12 kg, as you wrote.
These 4.0 cu ft/12 kg machines achieve their extra capacity by being deeper from front to back than a "standard" washer. In the US, a 27 x 27 inch (70 x 70 cm) was "standard" for many years with toploaders. Although standard footprint US size machines are larger than traditional European machines and would not fit under a counter in a kitchen (as in Europe), most laundry areas in US homes can accomodate such machines, even if the area is a closet with sliding or accordian doors. And of course if the laundry is in the basement or garage, there is usually more than enough room.
With the largest machines, the width remains at 27 inches/70 cm, but the depth increases to 31 inches (80 cm), which may not work in closet areas where the clearance between the sliding door and the front of the machine is not enough, since the closet was built assuming that all machines were 27 inches/70 cm deep. My sister's house has such a laundry area, and she would not be able to close the closet doors with a Bauknecht-built 12 kg machine (on the other hand, they really enjoy having the closet so close to all the bedrooms, so they stay with 27 x 27 machines and avoid the largest models).
Another application for which the largest machines are not as well suited is a stacking arrangement with washer and dryer. The "standard" height is 36 inches (90 cm), which is acceptable when stacked, with top of the stack (=dryer controls) at 72 inches or 180 cm. However, the LG and Bauknecht machines are 38-40 inches high, which when stacked can be 76-78 inches (194-198 cm) high...too high for a shorter person to use the controls comfortably (most people under maybe 176 cm height would not find it convenient, though a tall person might find it convenient!). I have seen the Duets in stacked arrangement in advertisements, but have never seen it in real life in anyone's house, they always seem to be placed side by side.
The Maytag Epic in the photo is Bauknecht built and is very similar to the previous Whirlpool Duet and KitchenAid Ensemble. Now that Maytag was bought by Whirlpool, they moved the Baucknecht machine to the Maytag line to try to restore Maytag's tarnished image (which used to be quite good until ten years ago).
