Bosch Series 6 review: 25 drinks on a touchscreen, ten saved favorites and room for a travel mug

Bosch Series 6 at a glance

First impressions of the Bosch Series 6

Michael Reynolds and I used the Series 6 as our everyday machine for four weeks.

Out of the box, it looks like a step up from the lower Bosch models, with a stainless steel front, a black top and a lit-up spout.

The touchscreen is the first thing you notice.

It's 3.7 inches, bright and colorful, with clear drink icons you can swipe through.

After the button panels on the lower models, it felt instantly familiar, like using a phone.

Only the Bosch 800 Series has a bigger screen, at 5 inches.

My first drink was a flat white, chosen from the screen in two taps.

The milk was fine and silky, and the espresso underneath was rich and sweet.

Then I tried a 16-ounce latte straight into my travel mug, which slid under the raised spout with room to spare.

The stainless front, color touchscreen and lit spout give it a premium look.

What the Bosch Series 6 actually is

The Series 6 is a fully automatic, bean-to-cup espresso machine with a milk hose, a touchscreen and Wi-Fi.

It grinds fresh beans, tamps and brews them under pressure and drops a dry puck into the grounds container.

For milk drinks, steam pulls milk up a hose from your container and froths it straight into the cup.

Water is heated by a thermoblock✕ThermoblockA compact heater that warms water as it flows through, instead of keeping a whole boiler hot. It heats up fast and uses little standby energy., and a 15-bar pump pushes it through the coffee.

My test unit is the stainless steel model TPU51703, rated at 1,600 watts.

It shares its tank, hopper and Quick Cup with the Bosch Series 4, but swaps that model's sensor keys for a full touchscreen.

It has 25 drinks on the touchscreen and up to 41 in the Home Connect app, including cold brew-style drinks.

It also has a heated cup warmer on top, which the black version of the Series 6 doesn't have.

Bosch Series 6 design and setup

The Bosch Series 6 measures about 11.2 × 14.9 × 18.6 inches, or 28.4 × 37.8 × 47.2 cm.

It fits under standard wall cabinets, but it's fairly deep, so check your counter before you buy.

You'll also want some space above it to open the bean lid and use the cup warmer.

The water tank holds 61 ounces and lifts out by a handle.

The bean hopper takes 10.6 ounces, about a week's worth for two people.

The spout is the design highlight.

It slides up to 6.5 inches, so most travel mugs fit under it, and a small light shines down into the cup.

The cup warmer

The top of my stainless model has an active cup warmer.

I kept two espresso cups and a mug upside down on it, and they were noticeably warm by the time I brewed.

It's a small detail that made a real difference to espresso temperature.

First-time setup

Setup is guided on the touchscreen and took about 15 minutes, including pairing the app.

You choose the language, set your water hardness, fit the filter if you want and run a first rinse.

The first few drinks were lighter while the grinder settled, and by the fourth cup it was on form.

Our tip: Keep your espresso cups upside down on the cup warmer, so every shot lands in a warm cup.

The 3.7-inch touchscreen shows every drink as a clear icon.

What happens when you tap a drink

It helps to know what the machine is doing while you wait.

On a normal start, the thermoblock heats and the pump sends a little hot water through the coffee path and out of the spout.

That rinse warms the pipes and clears old water, which is why the drip tray fills faster than you'd guess.

When you tap a drink, the grinder drops fresh grounds into the brew unit, which presses them into a puck.

The aroma setting decides how the puck is wetted before full pressure, and then hot water is pushed through.

For milk drinks, steam draws milk up the hose and froths it, before or after the coffee depending on the recipe.

XL drinks and the coffee pot repeat the grind and brew steps several times.

That's why a 16-ounce coffee tastes fuller than one long pour through a single puck.

What's in the box

Bosch includes what you need to get started and keep going for the first couple of months.

There's no milk container, because the hose goes straight into your carton or bottle.

A small glass bottle with a wide neck worked best for us, because it was easy to keep in the fridge door.

Bundles vary between sellers, so check what's included where you buy.

The touchscreen and favorites

The 3.7-inch touchscreen is what sets the Series 6 apart from the lower Bosch models.

On the Bosch 300 Series, for comparison, you get five sensor keys and no screen at all.

Drinks appear as icons with names, and you swipe or tap through them.

Choose one, and the screen switches to a settings view with strength, size, milk ratio and aroma.

It responded quickly to every tap, even with slightly damp fingers.

Status messages, like a full drip tray or an empty bean hopper, show up as clear graphics instead of blinking lights.

Ten favorites

Once you've set a drink just how you like it, you can save it as a favorite.

The Series 6 holds ten, and each one appears as a shortcut at the front of the screen.

My partner's extra-strong flat white and my milder morning cappuccino each became one tap.

That's the feature I'd miss most going back to a lower model.

Our tip: Name each favorite after the person who uses it, so nobody has to scroll or reset settings in the morning.

How the whole household got on with it

A touchscreen machine lives or dies by how quickly other people pick it up.

So during week two, I asked friends and family who had never used it to make their own drink without help.

Every one of them managed it on the first try.

The drink icons and names made the menu obvious, and the settings screen used plain words like stronger, bigger and more milk.

The only question anyone asked was how to make two drinks at once, and the two-cup icon answered that on the second look.

Saving a favorite took a little longer, because it's a few steps deep.

Once each person had saved one, they never went back to the main menu for their daily drink.

For a household with mixed ages and mixed tech comfort, that's exactly what you want.

Quick Cup and double cups

The Series 6 has two ways to save time.

The first is Quick Cup✕Quick CupA Bosch feature that lets you start a drink straight from standby. Holding a drink option for a few seconds wakes the machine, skips the startup rinse and begins brewing in one step..

With the machine in standby, you hold any drink on the screen for a few seconds.

It wakes, skips the startup rinse and starts grinding straight away, without a second tap.

The second is the two-cup option.

Put two cups under the spout, choose a drink, tap the two-cup icon and start.

It works for milk drinks too, so two cappuccinos are ready at once.

Because Quick Cup skips the rinse, the first espresso can be a little cooler.

With a cup from the cup warmer, I couldn't tell the difference.

The built-in ceramic grinder

The Series 6 grinds with a ceramic disc grinder✕Ceramic disc grinderTwo hard ceramic plates that crush beans between them. Ceramic stays sharp for a long time and transfers little heat to the coffee, which helps protect its aroma..

Ceramic is very hard, stays sharp for years and doesn't heat the beans much as it grinds.

That helps keep the aroma in the coffee rather than in the air.

Grinding is quiet, with a short, low hum.

The fineness is adjustable in several steps.

The default setting suited medium-dark beans well, and one step finer was best for medium roasts.

Only change the grind while the grinder is running, and judge the third cup after a change.

Bosch Series 6 espresso performance

Espresso was the best I've had from Bosch's mid-range machines.

It had more body than the Bosch 500 Series, though the 19-bar 800 Series still edged it.

With a medium-dark blend, one step finer than default and strong strength, the shot was dense and sweet.

I tasted dark chocolate, roasted hazelnut and a hint of cherry, with soft acidity and a clean finish.

The crema✕CremaThe golden-brown foam on top of an espresso. It forms when pressure pushes gases and oils out of freshly ground coffee. was thick and reddish-brown, and it held for several minutes.

From a warm cup off the cup warmer, the shot stayed hot to the last sip.

Consistency

I made six espressos in a row for a family lunch, each into a cup from the warmer.

The last one tasted the same as the first, with the same crema and the same heat.

That kind of consistency is what you pay for in a machine at this level, and the Series 6 delivered it every time.

The aroma setting

The aroma setting made a noticeable difference with lighter beans.

At its highest level, the coffee is wetted more gently before full pressure, and a medium roast tasted rounder and sweeter.

Coffee, XL drinks and the coffee pot

The Series 6 is the first Bosch in the middle of the range that really works for big drinks.

With XL drinks✕XL drinksBosch's extra-large drink option, up to 16.2 ounces in one go, brewed in steps so the coffee doesn't over-extract., you can brew up to 16.2 ounces in one go, and the 6.5-inch clearance means a travel mug fits.

The machine brews these in stages, so the cup doesn't taste thin or over-brewed.

An XL coffee was smooth and rounded, with more body than one long pour would give.

An XL latte was creamy all the way down, and still hot by the time I reached the office.

There's also a coffee pot option that makes about 25.4 ounces in several cycles.

For a weekend breakfast with friends, it was easier than making four separate mugs.

Cold brew-style drinks

Among the 25 drinks are Bosch's cold brew specialties.

They run cold water through the coffee instead of hot, for a softer, less acidic drink you can pour over ice.

It's not the same as a slow, overnight steep, but it was smooth and refreshing, and it took minutes instead of hours.

Our tip: For a travel mug, choose the XL size instead of running two normal drinks, because it brews in stages and keeps the flavor fuller.

The raised spout clears mugs and travel cups up to 6.5 inches.

Milk foam and milk drinks

The milk system is a flexible hose that clips onto the spout and goes straight into your carton, bottle or jug.

Steam draws the milk up, heats it and froths it into the cup.

There's no carafe, which keeps cleaning simple and the counter clear.

If you'd rather keep milk in its own container in the fridge, the 800 Series has one that clips on and off.

The foam was very good.

For cappuccinos, it was thick and creamy, and for flat whites, it was thinner and silky, close to microfoam✕MicrofoamMilk foam with bubbles so small you can't see them. It feels silky and blends into the coffee instead of sitting on top like froth..

The milk ratio setting let us make each drink as milky or as strong as we liked.

After every milk drink, a short burst of steam cleans the milk path automatically.

The milk drinks we used most

The flat white was our favorite milk drink on this machine.

It uses more coffee and finer, wetter milk, and the result was strong, silky and sweet.

The cappuccino had a thicker cap of foam and a softer coffee taste, which suited slower mornings.

The latte macchiato looked the best, with clean layers in a tall glass that now fits under the raised spout.

The plain milk froth option was handy for hot chocolate on weekends.

Our tip: Use the milk ratio setting to make a drink stronger, rather than shrinking the size.

The Home Connect app

The Series 6 is the first machine in this part of the range where the app feels optional.

With 25 drinks and ten favorites on the screen, we rarely needed it.

When we did, the app added 16 more drinks, remote start and maintenance notifications.

Remote start works, but you need a cup under the spout first.

If you plan to brew from bed, leave a mug in place the night before.

Temperature and getting hotter drinks

The Series 6 served the hottest drinks of the Bosch machines I tested in this part of the range.

The cup warmer is the main reason.

A cup from the warmer added about nine degrees to an espresso.

For milk drinks, cold milk and a warm cup gave the best mix of heat and foam.

Small problems I ran into, and the fixes

The Series 6 ran without a single fault for four weeks.

A few small things still came up, and each had a simple cause.

The travel mug overflow happened once, with a mug that turned out to hold just under 16 ounces.

After that, I checked each new mug by filling it with water from a measuring jug.

The favorite mix-up was a household issue rather than a machine one.

Once each of us had our own named favorite, nobody changed anyone else's drink by accident.

The rest came down to cold milk and a firmly seated hose, the same as on every Bosch with a milk hose.

Our tip: Measure your travel mug with water before the first XL drink, because many mugs hold less than they look.

Cleaning and maintaining the Bosch Series 6

Daily cleaning is mostly automatic.

The machine rinses its coffee path when it switches on and off, and it steams the milk path after every milk drink.

The drip tray and cover, milk nozzle, milk tube and grounds container are all dishwasher-safe.

Milk system

For deeper cleaning, a dedicated milk system program sends hot water and steam through the hose and connectors.

Run it with Bosch's milk system cleaner every so often, and the hose stays clean inside.

Each evening, I also ran warm water through the hose and wiped the outside.

The brew unit

The brew unit✕Brew unitThe chamber inside an automatic machine that receives the ground coffee, presses it into a puck, pushes hot water through it and then ejects the used grounds. sits behind a service door on the side.

Open the door, unlock the latch, pull the unit out and rinse it under warm water.

Wipe it with a soft towel, let it air-dry and slide it back until it locks.

No soap and no dishwasher, because both strip the food-grade grease from its seals and moving parts.

Calc'n Clean

When it's due, the screen and the app both remind you to run Calc'n Clean✕Calc'n CleanBosch's combined maintenance program. A cleaning tablet removes coffee oils from the brew path while a descaling tablet dissolves mineral scale, in one guided cycle..

It combines a cleaning tablet for coffee oils with descaling✕DescalingRunning a mild acid solution through the machine to dissolve mineral scale left by hard water. Scale slows heating and can block pipes. for mineral scale, in one guided program.

The touchscreen walks you through every step with pictures, which made it the easiest Calc'n Clean of the range.

My estimate of hands-on cleaning time per day, averaged over a week.

Our tip: Put the drip tray, its cover and the grounds container through the dishwasher once a week.

What daily use is really like

A typical weekday started with Quick Cup and a favorite.

I held my cappuccino shortcut, the machine woke and started brewing, and the drink was ready in about a minute and a half.

On days when I left for the office, an XL latte went straight into the travel mug.

The 61-ounce tank lasted two to three days with two people.

With more XL drinks, it needed filling closer to every other day.

The drip tray and grounds container needed emptying once a day.

Noise

It's quiet for a bean-to-cup machine.

The grinder hums briefly, and the pump and steam are steady rather than loud.

Under the cabinets, the stainless front and lit spout stand out.

Our tip: Fill the tank before bed on days you plan XL drinks, because they use water fast.

Beans, water and milk

Use fresh whole beans within a few weeks of the roast date.

Medium and medium-dark roasts gave the best balance, and lighter roasts worked well with the aroma setting turned up.

Avoid oily, flavored or sugar-coated beans, which can clog the ceramic grinder.

Fill the tank with fresh, cold water every day and use the filter if your water is moderately hard or harder.

Avoid distilled water, because coffee needs some minerals to taste full.

A typical week with the Series 6

To give a feel for real use, here's what a normal week looked like for the two of us.

Weekdays were all about speed, and weekends were about trying new drinks from the menu.

That came to about 30 drinks, three tank refills and one bean top-up.

The XL drinks used the most water, so weeks with more commuting meant an extra refill.

Reminders on the screen and in the app always arrived before anything ran out.

Common mistakes to avoid

The Bosch Series 6 is easy to live with, but a few habits will hold it back.

What I would change

A ground coffee chute for decaf would make the Series 6 more flexible.

Of the machines I tested, only the 500 Series has one.

A front-access brew unit would make the weekly rinse quicker.

And a milk carafe option would suit people who prefer to keep milk in a dedicated container.

Is the Bosch Series 6 worth the money?

The Series 6 is the Bosch that gets the most right for the most people.

You get 25 drinks and ten favorites on a clear screen, real travel-mug clearance, Quick Cup, two-cup brewing and a cup warmer.

It does all that without needing the app.

Ask yourself three questions before you buy.

Does everyone in your house like a different drink? Do you fill travel mugs often? And can you live with rinsing a milk hose each evening?

If the answers are yes, the Series 6 is the one I'd recommend first in the range.

It's also the machine in the range that ages best in a household.

Tastes change, guests come and go, and someone always wants to try something new.

With 25 drinks on the screen and 41 in the app, the Series 6 has an answer for nearly all of it.

Check what's included where you buy, because filters, cleaning tablets and milk cleaner vary between bundles.

In a classic wood kitchen, the stainless Series 6 still looks right at home.

How it compares with the rest of the Bosch range

The Series 6 sits between the button-panel Series 4 and the flagship 800 Series.

The Bosch Series 6 brings the touchscreen and favorites of the top model, with Quick Cup and taller cup clearance on top.

The Series 4 has Quick Cup and the app, but only six drinks on the panel and no favorites on the machine.

The 800 Series adds a bigger screen, 30 favorites, a larger tank and an attached milk container, but it loses Quick Cup and the taller clearance.

For many households, the Series 6 is the sweet spot.

The full package: color touchscreen, lit adjustable spout and drip tray.

Other Bosch machines I tested

For a simple, slim machine, see my Bosch 300 Series review.

The Bosch 500 Series has a decaf chute, and the Bosch Series 4 adds Quick Cup and an app.

For the biggest screen and tank in the range, read my Bosch 800 Series review.

Bosch Series 6 specifications

From manufacturer data and my own testing.

How I tested and scored the Bosch Series 6

For four weeks, Michael Reynolds and I used the Bosch Series 6 as our everyday machine for espresso, coffee, milk drinks, XL drinks, the coffee pot and the cold brew-style drinks.

We saved favorites for each of us, timed Quick Cup against the normal start and compared each grind, strength and aroma setting.

We made milk drinks with whole, 2%, skim, barista oat and almond milk, measured drink temperatures with and without the cup warmer and followed the full cleaning routine.

We then checked our notes against Bosch's specifications and owner documentation.

• Espresso (8.4): body, crema, flavor, temperature and consistency across back-to-back shots.
• Milk drinks (8.3): foam texture, milk temperature, ratio control and XL milk drinks.
• Ease of use (9.0): touchscreen, favorites, Quick Cup, two-cup brewing and the app.
• Cleaning (8.0): steam cleaning, milk program, brew unit access and Calc'n Clean.

The overall score of 8.6 is an editorial rating that reflects those four areas.