Head to head
Karcher K5 Power Control Flex vs Stihl TS 420
The Karcher K5 Power Control Flex is a domestic electric pressure washer for patios, cars and outdoor cleaning. The Stihl TS 420 is a petrol cut-off machine for 350 mm cutting wheels.
Last reviewed 13 September 2026
Specifications side by side
| Karcher K5 Power Control Flex | Stihl TS 420 | |
|---|---|---|
| Weight | 12.4 kg (without accessories) | 9.8 kg |
| Max pressure | 20-145 bar | - |
| Max flow rate | 500 l/h | - |
| Area performance | 40 sq m per hour | - |
| Displacement | - | 66.7 cm3 |
| Power | - | 3.20 kW |
| Cutting wheel | - | 350 mm |
Sources: Karcher K5 Power Control Flex, Stihl TS 420. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the K5 Power Control Flex if...
The K5 sits in Karcher's mid-to-upper domestic range, bought outright by homeowners for regular patio, car and garden furniture cleaning rather than hired. It is frequently the model UK reviewers and retailers use as the benchmark domestic Karcher pressure washer.
Full K5 Power Control Flex specifications →Buy or hire the TS 420 if...
A hand-held petrol cut-off saw for cutting concrete, stone, kerbs and pipe. Used by groundworkers, utilities crews and landscapers on road and paving jobs.
Full TS 420 specifications →Common questions
What is the difference between the Karcher K5 Power Control Flex and the Stihl TS 420?
The Karcher K5 Power Control Flex is a domestic electric pressure washer for patios, cars and outdoor cleaning; the Stihl TS 420 is a petrol cut-off machine for 350 mm cutting wheels.
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