In depth: pressure washers explained
The Expert Reviews Best Buy is not on this list, and the reason is stock
Expert Reviews' 2026 roundup names the Kärcher K4 Power Control its Best Buy, with 130 bar, 420 l/h, an 8 m hose and 11.5 kg, and the Nilfisk Core 130 Bike & Auto as recommended. Neither is here. For the K4 Power Control, the shops we could read only offered other versions: B&Q lists a K4 Power Control Car & Home bundle, and Kärcher's own UK site shows the K4 Power Control Flex. Argos and Currys list the standard model, but both block automated price checks, so we could not confirm stock.
The same applies to the AVA Go P40 Large Bundle, which Gardeners' World calls its best budget pick, with 120 bar and a 10-year guarantee. Wickes and Robert Dyas both showed it out of stock on 14 November 2026, so it was left out rather than ranked with a price we could not buy at. The EasyAquatak 110 takes the budget place instead.
A test applies only to the exact model assessed. The Nilfisk Core 130-6 PowerControl PCA at Toolstation is not the same as the Core 130 Bike & Auto bundle that Expert Reviews recommends, so it was not substituted. We kept the K4 Classic, which Expert Reviews names exactly, and the Core 140-6, which Gardeners' World names and whose listed specifications match Toolstation's.
Bosch UniversalAquatak 135 against Nilfisk Core 140-6, number by number
These are the two leading models and the numbers that separate them are small. The Nilfisk has 140 bar against 135, and 474 l/h against 410, which is 64 l/h more. It has a 1,800 W motor against 1,900 W, a 6 m hose against 7 m, and 8.7 kg against 9.8 kg per Wickes or 7.9 kg per Gardeners' World. The Nilfisk has five years with registration and the Bosch two.
Price decides it. The Nilfisk at £199.99 costs £71.99 more than the Bosch at £128, which is about 56 per cent more for 3.7 per cent more pressure. Gardeners' World scored both 4.8 out of 5, naming the Bosch best all-round and the Nilfisk best compact. Customers at Toolstation give the Nilfisk 4.76 from 37 reviews, and those at Wickes give the Bosch 4.4 from 92.
Choose the Nilfisk if you store the washer in a small space, if guarantee length matters, or if the extra flow suits large surfaces. Choose the Bosch if the budget is firm or you want the longer hose. Neither is a bad choice.
How much Kärcher is enough: K4 Classic, K4 Universal or K5 Classic
Kärcher sells three washers here with near-identical features. The K4 Classic and K4 Universal list 130 bar, 420 l/h, 1,800 W, a 6 m hose and the same guarantee route. The K4 Classic weighs 5.68 kg at Toolstation and the K4 Universal 6.6 kg, and the Universal costs £39.99 more at Wickes' price for the Classic. The Toolstation pages do not say what that extra money buys. If you want the K4 format, the Classic is the better value.
The K5 Classic adds 15 bar, 80 l/h, a 300 W stronger motor and 2 m of hose over the K4s, for £119.99 more than the K4 Classic at Wickes' price. Toolstation describes the K5 Classic as suitable for moderate dirt on garden surfaces, and its K4 Classic as suitable for moderate dirt on furniture, fences, bicycles and vehicles. Neither description promises a driveway.
Buy the K5 Classic if you regularly wash a large surface, such as a long drive, and the longer hose helps. Otherwise the K4 Classic does most of the work for much less, and the extra pounds are better spent on a patio cleaner or a hose extension.
Five conflicting figures that you should check before you buy
Listings disagree more often than you would expect, and it is worth knowing where. The Bosch UniversalAquatak 135 is given as 410 l/h by Wickes and Gardeners' World but as 7.5 l/min by Bosch's own page, which converts to 450 l/h. Its weight is 9.8 kg at Wickes and 7.9 kg at Gardeners' World. The K4 Classic is 5.68 kg at Toolstation, 5.6 kg at Expert Reviews and 7 kg at Wickes.
The Nilfisk Core 140 has a 6 m hose and 8.7 kg at Toolstation and Gardeners' World, but an 8 m hose and 9.2 kg in the Expert Reviews table, so that entry may describe a different bundle. The Worx WG633E quotes 42 bar and 38 bar rated at Worx UK, while Gardeners' World lists 56 bar, and Worx's own page gives 200 l/h in the title and 220 l/h in the description.
None of this means one source is careless. Models are revised, bundles are renamed and a weight may include a box or a different set of accessories. We used the retailer or maker figure for the shop we link to, and named the disagreement in the product card. When a difference would change your decision, such as a hose that is 6 m or 8 m, ask the shop for the model number and compare it with the manufacturer's page.
Buying guide: choosing the right pressure washer
A pressure figure alone will not tell you how fast a washer cleans
Which? sorts home washers into three duty levels: light under 90 bar with 1,200 W to 1,600 W motors, medium at 100 bar to 130 bar with 1,600 W to 2,000 W, and heavy at 130 bar to 150 bar with 1,800 W to 2,500 W. Every corded washer here sits in the medium or heavy bands on pressure. The Bosch EasyAquatak 110 has 110 bar but only a 1,300 W motor, which is below the medium range for power, and its 330 l/h flow is the lowest of the corded group.
Flow matters because pressure only describes how hard water leaves the nozzle, while flow describes how much arrives. Which? gives flow only as low, medium or high, so the litres per hour on retailer pages are the best comparison. Converted to litres per minute, the K4 Classic's 420 l/h is 7 per minute, the Nilfisk Core 140-6's 474 l/h is about 7.9, and the K5 Classic's 500 l/h is about 8.3. The EasyAquatak 110 delivers 5.5.
Maximum pressure is also not what you use. Toolstation lists the Nilfisk Core 140-6 at 140 bar maximum but 100 bar operating pressure, and the gap between the two figures is normal for models that vary pressure through the trigger or lance. When two washers are close, flow and what the lance does with it are more informative than the bar number on the box.
This does not suit you if you only want to rinse bikes. In that case the lower flow is a minor drawback, and the EasyAquatak 110 at £65 is enough.
A 3 m hose turns a cheap washer into a chore
Hose length decides how often you pick the machine up and move it. The EasyAquatak 110 and the K2 Classic have 3 m hoses. The Nilfisk Core 140-6, K4 Classic and K4 Universal have 6 m, the Bosch UniversalAquatak 135 has 7 m and the K5 Classic has 8 m. Which? lists hose lengths from 3 m on the cheapest models to 10 m on the biggest, with 3 m to 5 m typical for light duty and 5 m to 6 m for medium duty.
Reach is a hose plus a cable, and every corded model here has the same 5 m cable. A 7 m hose against a 3 m hose adds 4 m of reach for the washer from where it stands. If the nearest outdoor socket and tap are on opposite sides of the house, you need extension leads or a long garden hose as well, whatever washer you choose.
Expert Reviews noticed the same trade-off in the Kärcher range: it called the K2 Horizontal's 3 m hose and 5 m cable short, and found that the K4 Classic's hose springs off its storage space. A long hose can also be a nuisance, since Expert Reviews says the 10 m hose on the K5 Power Control tangles. That is a different model from the K5 Classic's 8 m, but the lesson carries over to any long hose that coils badly.
A short hose does not rule out a washer if you work near the tap. For a car on a drive it is fine. For a long patio, choose 6 m or more.
The heaviest washer is the one that stays in the shed
Weight spans a wide range here: 3.8 kg for the EasyAquatak 110, 4.28 kg for the K2 Classic, 5.68 kg for the K4 Classic, 6.6 kg for the K4 Universal, 7.35 kg for the K5 Classic, 8.7 kg for the Nilfisk and 9.8 kg for the Bosch UniversalAquatak 135 according to Wickes. The Bosch figure is the least certain, since Gardeners' World lists 7.9 kg, and Wickes and Toolstation disagree on the K4 Classic, 7 kg against 5.68 kg.
The Nilfisk weighs 3 kg more than the K4 Classic at Toolstation's figures. Wheels and handles reduce the effect, and Gardeners' World praised the Bosch's stable feet and folding handle and the Nilfisk's neat storage. If you carry the washer up steps or into a car boot, take the lighter model; if you wheel it across a flat drive, the weight matters less.
Check the weight on the maker's own page for the exact model number before buying if you have stairs to climb, because the retailer figures above do not agree.
For a shed with no stairs, the heavier Bosch and Nilfisk are not a hardship. They are a poor match for a flat with a storage cupboard.
A five-year guarantee is a form you have to fill in
Kärcher and Nilfisk both sell their washers with a standard two-year guarantee that extends to five if you register. Toolstation spells out 28 days for the Kärcher models and 30 days for the Nilfisk. Wickes simplifies it to five years for the K4 Classic with registration within 28 days. If you buy and forget, you have two years.
Bosch is shorter. B&Q lists two years for the EasyAquatak 110, rising to three if you register on MyBosch within 28 days, and Gardeners' World lists two years for the UniversalAquatak 135 without mentioning an extension. The Worx cordless model has five years on the tool if you register within 30 days but only two years on its battery packs.
The extra guarantee costs nothing but a few minutes online, which makes it a real advantage for Kärcher and Nilfisk. A cheaper machine with a shorter guarantee is still a fair bet: at £65 the EasyAquatak 110 costs £95 less than the K4 Classic at Wickes.
The guarantee is not worth paying for if you will not register. Set a reminder on the day it arrives.
Cordless washers are for rinsing, not for cleaning a patio
The Worx Hydroshot WG633E quotes 42 bar maximum and 38 bar rated pressure. Which?'s light-duty band starts below 90 bar, so even the least powerful corded washer here, with 110 bar, has more than double the Worx's pressure. Gardeners' World said its earlier WG620E is not suited to very high-pressure jobs, and Expert Reviews described the WG630E as very limited in power.
What a cordless washer gives you is freedom from a tap and a socket. The Worx suction hose draws from open water such as a pool, per the manufacturer, and the whole machine weighs 2.2 kg with its battery, according to Worx. For bikes, barbecues, garden furniture and mud on a car, that is a sensible trade, and Gardeners' World gave it 4 out of 5. The weak point is the battery: Gardeners' World found it drains fast, and Worx's UK page does not say how long a battery lasts.
Cost is the other problem. Worx charges £207.99 for the kit, or £142.99 bare if you already own PowerShare batteries. That is about £4.95 per bar. A corded K4 Classic at £160 offers more than three times the pressure.
If you have a drive, a patio or decking to clean, a cordless washer is the wrong tool. Choose it only if you have no outdoor tap or socket.
Shop reviews and written assessments answer different questions
A written assessment tells you how a model cleaned a given surface, how easy it was to use and what annoyed the reviewer. Gardeners' World scores set-up and storage, handling, performance on paving, furniture, brick and cars with different nozzles, and value. Expert Reviews says every washer it covers is tested thoroughly. We use their findings with the name attached.
Shop reviews show whether many people were happy after weeks or months. The K4 Universal has 407 at Toolstation averaging 4.72 out of 5, the K5 Classic 307 averaging 4.60 and the EasyAquatak 110 265 at B&Q averaging 4.55. The Bosch UniversalAquatak 135 has 92 at Wickes averaging 4.4, and the K2 Classic 18 averaging 3.78. These averages say little about what failed, and we have not read the individual comments.
The two sources are used together. A model with a written assessment and a good shop record, such as the Bosch and the Nilfisk, ranks above one with the shop reviews alone, even when the numbers on the shop page look better. That is why the K4 Universal, with the best customer record, sits fourth rather than first.
Which? is the independent reference for this category, and its method is freely visible even though its results are not. Each washer cleans a 1 sq m patch of concrete, block paving, paving slabs, softwood decking and a car, to check how well and how quickly each model cleans it. Which? also assesses ease of use, noise and water use. We cannot use the scores, but we can use the method as a checklist: cleaning speed on your own surfaces, ease of handling and noise are the three things worth weighing, and they are what our criteria try to reflect.
Neither source helps if you want to know about noise. Toolstation lists 76 dB to 78 dB for the Kärcher and Nilfisk models, Gardeners' World called the Bosch comparatively quiet, and the independent noise measurements sit behind a membership wall.
Price per bar is a rough guide and a useful one
Dividing the price by the maximum pressure gives a crude measure of how much pressure you buy per pound. The EasyAquatak 110 comes to about 59p per bar, the K2 Classic 82p, the Bosch UniversalAquatak 135 95p, the K4 Classic £1.23, the Nilfisk Core 140-6 £1.43, the K4 Universal £1.54 and the K5 Classic £1.93. The Worx works out at about £4.95.
The measure flatters the cheapest models, because the more powerful ones also give you flow, a longer hose and extras. It also ignores weight and guarantee. Read it as a way to see which models are expensive for what they are: the K4 Universal costs the same as the Nilfisk but offers 10 bar and 54 l/h less, and the K5 Classic costs £151.99 more than the Bosch for 10 bar and 90 l/h extra.
The prices on this page are the ones we could read on 14 November 2026 at Wickes, Toolstation, B&Q and Worx. Prices can change quickly in the weeks before Black Friday. PriceSpy lists the Bosch from £108 at Amazon.co.uk with a member price, but Amazon blocks automated checks, so we do not rely on it.
Price per bar is no use if you need a long hose or a light machine. Pay more for those if your garden needs them.
