I just tried KitchenAid's new slimline bean-to-cup coffee machine – it's the perfect buy for small kitchens combining sleek style and great quality coffee

If you’re reading this, then lusting after KitchenAid appliances is something we probably have in common: gorgeous looks and great design are a win-win for any style-conscious kitchen. Naturally, KitchenAid’s first foray into the world of bean-to-cup coffee machines was no exception – the £1,500 KitchenAid KF8 won our admiration (and a four and half star review) back in 2025.

Now, in 2026, the brand has now unveiled the more affordable members of its automatic bean-to-cup family. And in this review we’re going to be looking at the most upmarket model in the new trio, the £899 KF4.

In a nutshell

The big news here for many buyers is that KitchenAid has shrunk the size of these machines down – it claims that they’re 25% smaller than the previous models. In practice, the machines are roughly 6.5cm slimmer, so far easier to squeeze on a busy countertop. In truth, I haven’t seen any fully automatic bean-to-cup machines which are quite so slender.

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The new range includes the £699 KF2, £749 KF3 and the £899 KF4 which I have for review here. Naturally, the KF4 is the most feature packed of the group. It doubles the KF3’s two user profiles to four. It adds five extra drink recipes. It also includes a rather more elegant plastic milk carafe in the box: by contrast, the KF3 simply dangles a tube into your preferred milk receptacle while the KF2 makes do with a manual steam wand.

Who tested this machine?

Sasha Muller

I’m Sasha, and I’m a freelance reviewer. I’ve spent the past 25 years reviewing everything from the latest tech to home appliances, and I’ve reviewed a huge number of coffee machines for various major outlets over the years. In recent months, I’ve tested a variety of the latest coffee machines, including rival models from De’Longhi, Gaggia, Jura, Melitta, Philips, Sage and more. Given the hype around the KitchenAid KF8, I was keen to put the KF4 through its coffee brewing paces.

I use freshly roasted coffee beans for every machine I test – for this review, I used Craft House Coffee’s Rwandan Kinini Rebero in a medium espresso roast.

Unboxing

The KF4 comes clad in several separate protective panels of moulded wood pulp. Sensibly, KitchenAid wraps the whole package in a polypropylene sling with handles, so you can just lift the entire machine out of the box easily without worrying about dropping it.

As usual, several little strips of blue adhesive tape hold the various parts in place during transit, and protective transparent plastic sheets are adhered to the touchscreen and between the water tank and the machine’s rear to prevent scratching. Some of the packaging – the wood pulp, for instance – is recyclable with home recycling, but the plastic sheets and tape may need to be taken to a specific plastic bag recycling collection depending on your local area’s recycling facilities.

Open up the KF4’s box, and the user manual and quick start guide are placed just inside the box’s top flap, directly on top of the machine. Alongside, there’s a QR code offering to help you ‘Get Started’. Point your phone at the code and you’re transported to KitchenAid’s website where a very basic tutorial helps you to get familiarised with the machine. If you’re the kind of person who likes to familiarise yourself with the user manual before rifling through the packaging, it’s a good way to start.

The instructions could be better, however. The website instructions feel like a bit of an afterthought; the thick user manual is actually just a few pages of text instructions repeated in a multitude of languages – hardly what I’d call an Owner’s Manual – and the quick start guide is nothing more than an annotated diagram of the machine and its touchscreen interface. It would have made far more sense to combine the information from both into one concise pamphlet.

Thankfully, the touchscreen also does its bit to lead users through the set up process. It, too, could be more detailed – it’s not as clear as the full colour animations on Sage’s machines, for example – but it’s informative enough to get most buyers started. There’s definitely room for improvement here, though. Oddly, there’s no mention of using the water hardness tester at all, and the little on-screen diagrams are too small to be really helpful.

Impact on a kitchen worktop

This is where KitchenAid’s new models will win a lot of friends. At 36cm tall, it’s a tiny bit shorter than many of the bean-to-cup machines I’ve seen recently, and this is because of the integrated bean hopper – it doesn’t protrude from the top like some rivals.

At 19cm wide, however, it’s dramatically thinner than any machine I’ve reviewed in recent memory. The De’Longhi Rivelia (which we've reviewed) is the closest model I can think of, but that’s 24.5cm wide due to its side-mounted water tank. If you’ve been wishing you could accommodate a fully automatic model but just didn’t have the space, it’s a major selling point.

The downside of the KF4’s design, as you may have gleaned already, is that the water tank is positioned at the rear. Bean-to-cup machines often opt for side mounted water tanks that either slide forwards for easy removal, or unclip to the side. The KF4’s needs to be lifted up by about a centimetre and removed to the rear – you’ll need to leave room around it to make for easy refilling. You can open the lid (which isn’t removable) and just pour water in, but you may not want to risk this if you have mains sockets behind the machine. And if there are cupboards above, you’ll struggle.

First impressions

The KF4 feels well built. Like most bean-to-cup machines, it’s predominantly plastic, but those plastics feel solid and all the attachments feel robust enough to instil confidence. There isn’t the thin, hollow feeling which I’ve noticed on some sub-£1,000 machines.

It’s all been sensibly designed, too. The spouts slide up and down smoothly and provide up to 14cm of cup clearance. The drip tray slides out to reveal the grounds bin, and this separates into multiple parts for easy cleaning. The 1.8-litre water tank slots firmly onto the rear. The 250g bean hopper is hidden neatly under the top panel – the centre of this pulls away to reveal the bean hopper and the single dose chute. The rubber seal on the underside of the removable panel helps keep your coffee beans fresh, too, which is a nice touch.

A single water filter is provided in the box, and this screws into place in the tank. Replacements cost a fairly steep £15 each on KitchenAid’s website, but were just under £10 at the time of writing. However, don’t make my mistake of initially trying to install the water filter by hand: the narrow tank makes this nigh-on impossible. KitchenAid supply a coffee scoop in the box, and the odd-looking attachment at the other end is designed to fit over the top of the water filter and screw it into place.

The milk carafe design simply connects via a tube. One added benefit is that if you can’t find the carafe – or it breaks – you can just jam the tube directly into a milk bottle or jug. As long as the tube is intact, and it’s submerged in milk, it’ll work just fine.

The only issue with the carafe is the loose lid. I’d have liked to see the lid actually click into place – or secure in place with a rubber seal and interference fit. Make the mistake of grabbing it by the lid and it just comes off without any effort. Try carrying it by the lid and you’ll get a nasty surprise. It’s a poor design choice.

User experience

Hit the power button on the machine’s right hand side and the machine thrums into action. After the initial setup process has directed you to rinse the water tank and install the water filter, the machine pulls through four shots of coffee to prime and clean the machine. These need to be poured down the sink, so my advice is to use some old beans you have lying around rather than wasting good coffee.

Once the machine is warmed up and ready to go, you can swipe to scroll through the machine’s various recipes. Tapping an icon reveals a settings menu which provides options to adjust drink temperature, coffee and milk volumes and drink strength. Some drinks recipes give you the option to pour two drinks simultaneously: pop two cups under the spouts and the machine will pour two shots back to back and add milk to each.

There are four user profiles, too. These allow you to save specific drinks recipes to your user page. Tap the touch sensitive user button on the front panel and you can access your saved drinks without scrolling through the main menu at all.

Noise test

The KF4’s Quiet Mark certification is more than justified. It’s still noisy compared to the quiet splutter of a filter coffee machine, granted, but the loudest sound emanating from the KF4 was an average of 63dBA during grinding. Brewing was remarkably quiet at 50dbA and steaming was mostly around 55dBA apart from a brief splutter of 63dBA as the machine started to slurp milk.

For reference, this is a little bit quieter overall than the De’Longhi Rivelia and Philips LatteGo 5500, and only a tad louder than the two Jura models – the C8 and J10 – which passed through my test kitchen in recent months. If silence (or at least relative quietness) is golden in your kitchen, then the KF4 puts in a good show.

Coffee quality

The KF4 pours great coffee from the first prod of its touchscreen. I tried all of the major drinks from espresso to macchiato and latte to flat white, and they were all consistently well extracted. The over-ice drinks – the iced coffee and iced espresso – are brewed cooler (around 55c) and it’s left to you to add your own ice.

By default, it’ll pour a 40ml espresso while most of the longer milk-based coffee recipes seem to target a small cup size of around 120ml, so bear in mind that you’ll need to up the volumes to fill larger cups or mugs.

The milk frothing works well. It doesn’t create the thick, silken gloss of a carefully wielded manual steam wand, but it’s very good. The froth has a tight, creamy texture, and it’s much thicker and more long-lasting than the light, bubbly froth which you’ll get from some mid-range models, such as the Philips LatteGo 5500.

It’s a shame that the froth levels aren’t adjustable – for recipes such as the macchiato, where you just want a dollop of froth popped on top, it doesn’t quite fit the bill. What it can do, however, is create a flat warm milk or a frothed milk (and both of these hot milk options are on the menu for the non-coffee drinkers in the audience). For recipes such as the cappuccino, the KF4 uses its frothy setting; for a flat white, it pours plain steamed milk, so there’s only a thin layer of froth on top.

For those who want to dial in every coffee to perfection, there’s a good amount of adjustability. You can adjust the various options for each drink and save those settings to your user profile.

One interesting addition is the Body setting. This speeds or slows the extraction time, and you can use this in tandem with the dosage and volume settings to tweak the flavour of beans to your preferences. It works really well, too. There was the slightest hint of bitterness to the espresso with the strength set to maximum – dialling it down to the light body setting gave both a juicier, more fruity shot and dialled back the bitterness nicely.

There are only 5 settings for the grinder (the dial is hidden behind the KF4’s side panel), but it didn’t really need any adjusting for my medium roast beans. And in any case, the lack of extreme adjustments means that users are less likely to create undrinkably bitter or sour shots. I’d personally prefer more adjustability for dialling in different coffees, but most people probably won’t be too bothered. Rivals such as the De’Longhi Rivelia offer 13 steps of grind adjustment which gives a little more latitude for fine tuning.

Temperature consistency is good. The first drinks out of the machine were very slightly cooler than subsequent ones, but that’s not unusual as any coffee machine takes a little time for all the parts to warm up. In fact, the temperature stability is better controlled than some bean-to-cup machines I’ve tested recently. The first drinks came through around 68C and subsequent cups settled between 70c and 72c depending on the recipe and the ratio of milk to coffee. As the machine heats milk to around 65c – the perfect temperature to prevent scorching the milk – it’s the volume of hot coffee added which bumps temperatures up to and beyond 70C.

If you are in a rush, then you can get a couple of coffees poured in under five minutes. Once you’ve waited for the initial rinse, each milk-based drink at default size (40ml coffee, 80ml milk) takes around a minute and a half. You can tap the main drinks icon to pour two simultaneously though. Pop a couple of cups side by side, and it’ll brew two shots back to back and then add milk to both cups. This takes just under 3 minutes for the standard sized cappuccinos and flat whites.

What's it like to clean?

The KF4 rinses and warms up automatically the first time you turn it on, and this takes just under a minute and a half. Turn it on again a little later – while the machine is still warm – and it’ll prompt you to rinse but not force you to do so. A word to the wise: this can’t always be skipped. Ignore the prompts to clean the machine or milk system and you may find you’re forced to do both in succession next time you turn it on.

The milk carafe cleaning is elegant. Simply disconnect the tube from the carafe and plug it into a hole in the drip tray. This then blasts out any residue in the milk system for around a minute, while you simply have to clean the carafe in the sink with a bit of warm soapy water. Unlike rival designs which use more complex carafe designs, such as De’Longhi’s LatteCrema system, there are precious few nooks and crannies for milk residue to get stuck in.

Drips do tend to accumulate on the metal drip tray, but there’s nothing you can’t clean up with a damp cloth.

In terms of internal cleaning, KitchenAid recommends using a cleaning tablet after every 200 cups of coffee. Two are supplied in the box, and the KF4 will prompt you to carry out the process when it’s needed – or you can manually trigger it in the settings menu.

The water filter is designed to be replaced every 2 months or after every 50 litres of water used. Descaling is required in anything from 6 weeks to 2 months depending on water hardness. If you replace the filter regularly – or just use filtered water from a jug – descaling shouldn’t be required as often.

Bear in mind, however, that the initial setup process seems to bypass the water hardness testing if you opt to install the supplied water filter. This means that the machine is set to the worst case Very High water hardness setting which will prompt more regular cleaning and descaling. My advice would be to manually carry out the water hardness test and input the relevant information for your area – there’s a tester in the box, so you may as well use it.

How does it compare to competitors?

At this kind of price point, I normally have two recommendations – the Jura C8 or the De’Longhi Rivelia. Both retail for around £650 at the time of writing. For faff-free simplicity, I’m a big fan of the Jura. It makes good coffee and the milk steaming is very good, too. It’s not for everyone, though, as it lacks a lot of features compared to either the KitchenAid KF4 or the De’Longhi Rivelia. The C8 only has a handful of recipes, no hot water dispensing and while it makes good coffee, it lacks the adjustability to eke as much flavour from as wide a range of coffees as the Rivelia.

And this is where the KitchenAid KF4 comes in. In short, I think it’s markedly better than the Jura C8 and marginally a better all-rounder than the Rivelia. Given that it costs £899, that’s probably to be expected. In terms of coffee quality, both the KitchenAid and De’Longhi machines are capable of making a very mean espresso and an excellent milk-based coffee. Where the KF4 marches ahead, however, is looks and convenience: the slender footprint, simple carafe design and better touchscreen and controls all lean in favour of the KF4.

Should you buy the KitchenAid KF4?

I had high hopes for the KitchenAid KF4, so it’s impressive to see it deliver the goods in such confident fashion. The narrow footprint is perfect for smaller kitchens, and the fact that it’s relatively quiet, highly adjustable and makes such consistently tasty coffee is enough to convince me that it’s worth the relatively high asking price. There are cheaper rivals out there if you can accommodate a larger machine, but if you want great coffee without the bulk, it’s a great buy.