The vacuum cleaner S 8340 EcoLine Miele was at Stiftung Warentest in Issue 2/2014 with a score of 2.0 (GUT) among 15 competitors
winner . It is worthwhile to take a look at this bagless vacuum cleaner of the German company Miele - not only because of good grade of Stiftung Warentest, but also because of the almost 100 years of experience, the Miele gained with the construction of vacuum cleaners. As you can already expect a lot!
- On top of the device is located next to the foot control for automatic cable rewind the on / off switch , are directly above two buttons labeled "+" or "-" attached, which for variable electronic suction power control actions ( "+" corresponds to 1200 watts ). Between these two buttons you will find a display with 6 symbols ( "curtain" to "Floor") that symbolize each currently selected suction.
- The telescopic tube is connected to the handle and the other nozzles by push closure. Slight pressure on the release buttons releases the connection again.
- If the dust bag change indicator completely filled with the color red (the dust compartment lid beneath the suction hose filler neck), it is time to change the dust bag. Depending on what kind of dust you sucks in the dust bag, the display may sometimes even "full" view, if the bag is not completely full (eg for particulate matter or dust from drilling, whereby the pores of the dustbag become clogged). Even then, of course, the bag must be replaced.
- The following accessories are shipped with:
- a AirTeQ floor nozzle , it is described by the manufacturer as' very good flow with high uptake capacity "and is switchable between carpet and hard floor.
- a crevice tool , an upholstery tool and a dusting brush (with movable head). These three components can be accommodated in a space-saving built-in accessory compartment under the lid closing.
- The radius of action incl. 7.5 meter extension cable is 11 meters, the volume is on average 75 dB (A).
- The user manual of Miele S 8340 is certainly one of the best in this field of home appliances. Although provided with only one drawing elevation, but the individual operations in well-structured text sections are explained in detail and sufficiently.

The Miele S 8340 has the components integrated model:
upholstery nozzle and furniture brush are always stowed within reach inside the instrument.
In the
energy efficiency (A to G) is the Miele S 8340 EcoLine in class D (ie just about in the middle of the scale of values), and also the average annual energy consumption it has with 43.9 kWh / year, only a mediocre value.
In the
dust emission (a to G) holds up a bit better: here the S 8340 is in class B (ie only one class below the best possible), and this is connected with the high quality of filtering in the device:
- First there is the HyClean dust bag with 4.5 liter capacity, the preference of the " Protector netting has". What this means is that is prevented even with sharp-edged suction material, such. As glass shards, or nails, a burst of the dust bag.
- The second important element of the air filter is to be mentioned that the term " AirClean filter bears". Although this is not a HEPA filter but contributes together with the dust bag and the motor filter in the dust retention capacity of more than 99.9 percent.
- Finally, there is a third element, yet the aforementioned motor protection filter , which is mounted in the dust chamber in front of the engine.
Note:
Each package Miele dust bag is also at an exhaust filter (Clean Air) and a motor protection filter. The manufacturer recommends replacing the dawn of a new packet of Miele dust bag the exhaust filter and motor protection filter.
When
replacing the filter bag dust can escape the way, since the hygienic seal the dust bag closes automatically when you open the lid. For the reverse process, ie closing the dust chamber cover, it should be noted that this includes only devices with a filter bag.
Achieved the second best dust emission class (B): the Miele S 8340. Miele sets each anther pack an additional exhaust air and a motor protection filter at , At the dawn of a new package, these two filters can therefore be replaced with new ones.

Since September 1, 2014, all newly sold vacuum cleaners must be marked with the EU energy label. Specifically, this means for the Miele S 8340 EcoLine:
- Energy efficiency class: D
- Volume: 75 dB (A)
- Average annual energy consumption: 43.9 kWh
- Dust emission class: B
- Carpet Cleaning Class: C
- Hard floor cleaning class: B
The Miele S 8340 has in the energy efficiency class ( "D") not particularly good value, but which may in turn by Fast Optima ( "B") to compensate for the dust emission class and hard floor cleaning class. At this vacuum cleaner one can see very well that the wattage alone by no means sufficient to describe the performance of a vacuum cleaner.
It all depends on how long you have to pull (in this case, of 1200 watts) from the socket, the nominal power to perform the standard cleaning procedure of the EU-lables. Thus, the relatively high value of 43.9 kWh annual energy consumption explains.
The Miele S 8340 has with its fuel-efficient
1200 Watt get the three fully integrated additional nozzles and ease of use probably rightly by the Stiftung Warentest rated "GOOD".
Nevertheless, one can complain that he comes to
energy balance is only in the middle and exhaust filter and the motor protection filter acc. Manufacturers should be replaced with every change of dust bag.
We summarize briefly the essential features of Miele S 8340 together:
- Bag capacity: 4.5 liters,
- Operating radius: 11 meters,
- Extension Cable: 7.5 meters,
- Energy efficiency class: D,
- Volume 75 dB (A),
- Accessories: crevice nozzle, furniture brush
- Filter change indicator in the lid,
- electonic Suction strength.
Here again follow all the information and the test score to the bag vacuum cleaner Miele S 8340: