The bottom line The most complete floor washer here — and still silent on the one number that decides whether the roller smells.
The FCV 4 Natural N is the most complete floor washer on this site: four modes including stairs, a Dynamic!Control dirt sensor, two-stage filtration, and a self-cleaning cycle that runs while the machine charges.
The cycle that runs itself
Floor washers are abandoned because the roller sits damp. A self-cleaning programme that starts during charging removes the step that people skip, which is a better answer than a button they have to remember.
Two filter stages
A flat pleated filter and a foam filter rather than one element. On a machine that pulls dirty water through a pump, that is what keeps the fine fraction out of the motor.
What is still not stated
The wash temperature. The Tineco S6 states 85 °C and the Dreame H12 Pro 90 °C; Kärcher states that a cycle exists. On the figure that decides whether the roller smells, this page cannot rank it.
Availability
Verified on DE, GB, FR, IT, ES. Verified absent from US — readers there are sent to a local search rather than to a page that does not exist.
What we like, and what we don't
Strengths
Self-cleaning runs while charging, so the roller is dealt with without a separate step
Two-stage filtration rather than a single element
Rated for short-pile carpet as well as hard floors
A stairs mode, which nothing else in this family offers
Compromises
The most expensive floor washer on this site
Verified absent from the US store
No wash temperature published for the self-cleaning cycle
Specifications
Modes
Four cleaning modes, including a stairs mode
Runtime
approx. 45 minutes
Dirt detection
Dynamic!Control sensor adjusting suction, roller speed and water
Filtration
Duo!Pure two-stage — flat pleated filter plus foam filter
Self-cleaning
System!Clean, runs during charging
Surfaces
Hard floors and short-pile carpet
Part number
1.056-133.0
Amazon reference
B0FCM956Z8
EAN
4066529178022
Questions people actually ask
What does a stairs mode do?
It changes the power and water delivery for short, awkward passes where the head cannot be driven forward. Stairs are the job every floor washer refuses, and most people end up doing them by hand — a mode that acknowledges them is unusual.
Self-cleaning during charging — why does that matter?
Because the step people skip is the one that has to be started deliberately. A cycle that runs while the machine is on charge happens whether you remember or not, which is exactly the right design for the failure mode of this category.
Our score
8.9/ 10
The most complete floor washer here — and still silent on the one number that decides whether the roller smells.
Who this one is for, among cleaning machines
A house with mixed floors and stairs, cleaned weekly, where the machine has to look after itself
Set beside the neighbouring cleaning machines
cleaning machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
Where the models are not equal, in cleaning machines
If price decides: Bissell CrossWave C3 Pro 3555N, at 215 €.
When to look elsewhere among cleaning machines
On a tighter budget: Vexilar X7, at 170 € in the same category. see the review
Where this one sits on price, among cleaning machines
At 300 €, it sits +40 % against the 215 € median of the 11 models in this category published here.
This model in our cleaning machines guides
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Cleaning Machines for Pet Owners — 2026 Guide | CleanVerdict
Self-Cleaning Pressure Washers — What the Cycle Really Does | CleanVerdict
Price and availability, for cleaning machines
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on August 16, 2026.
Sources
Specifications: the manufacturer sheet for cleaning machines and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.