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  3. RCW 4 Extra+ vs RoboStar W800 WiFi

Kärcher RCW 4 Extra+ vs TESLA RoboStar W800 WiFi

What RCW 4 Extra+ does better (2) and where RoboStar W800 WiFi wins (0) — every spec side by side.

Kärcher RCW 4 Extra+
Kärcher · 2026RCW 4 Extra+
8.0Score
2 advantages≈ US$220
Higher score
vs
TESLA RoboStar W800 WiFi
TESLA · 2025RoboStar W800 WiFi
5.6Score
0 advantages≈ US$170
8.8Mopping3.2
6.6Battery6.6

Why is RCW 4 Extra+ better than RoboStar W800 WiFi?

  1. Water tank (robot)150 ml vs 60 ml2.5×
  2. Noise level62 dB vs 70 dB+13%

Why is RoboStar W800 WiFi better than RCW 4 Extra+?

RoboStar W800 WiFi has no measurable advantages in this pair.

Specifications

Side by side

Suction & cleaning
Suction power5,000 Pa—
Noise level62 dB70 dB
Mopping
Water tank (robot)150 ml60 ml
Size & weight
Width / diameter264 mm220 mm
Length256 mm220 mm
Weight1.5 kg1.2 kg
ColoursWhite, Black, YellowWhite
App & smart home
App control—Yes
Remote controlYesYes
Window cleaning
Water sprayYesYes
Backup battery (power cut)YesYes
Safety ropeYesYes
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