How We Compare Espresso Machines: Spec Sheets and Standards, No Own Tests

Anyone spending this kind of money on a machine should know what a recommendation rests on, and what it does not rest on.

What we do not do

• No tests and no scores. We do not pull shots on these machines, measure temperature at the puck or time heat-up. So we call our overviews a "comparison" and do not award scores.
• No paid placements. No maker and no retailer can buy a recommendation.
• No invented experiences. You will not find made-up quotes, routines or measurements here.
• No prices and no star ratings. We name price classes in words only. The numbers on Amazon move too fast to print, and its program has rules about them.
• No artificial urgency. There are no countdowns and no invented discounts.
• No generated product pictures. Products appear as neutral pictograms. The photos on this site are AI-generated scenes, and none of them shows a product we link to.

What we compare

We read the same points for every machine, so very different machines stay comparable.

One pick per need

We recommend exactly one machine for each buying decision, and name the reason. We only show alternatives when they differ clearly, for example in boiler type, portafilter size or price class.

How sure each value is

Not every value on this site is equally strong, so we show where it comes from.

• Maker page read. The Breville models and the Smart Grinder Pro: we read the product pages in November 2026. "Not stated" means that page does not mention the value. It does not mean the machine lacks it.
• Per retailers. Gaggia's page gives the Classic's 58 mm, and Rancilio's page and manual give the Silvia's 0.3 L boiler. The Gaggia's 9 bar valve and the Silvia's 58 mm still come from retailer pages. Check the manual if a value decides your purchase.
• Per listing. Where we only have an Amazon listing, the product is marked "Seller data only", and values from its title say "per listing". We never give such a product our pick.
• Not verified. "Dual boiler" or "double boiler" in the title of a budget machine may mean two heating units rather than two boilers. We have not checked this per model, and those products say so.

Where our facts come from

• Makers: product pages and manuals, always labeled as maker information.
• Standards: the INEI leaflet on Certified Italian Espresso and the SCAA water standard of 2009, which we could only read as a copy on a third-party server.
• Research: Illy and Navarini (2011) on crema, and Cameron et al. (2020) on grind and extraction, of which we could read only the abstract.
• One-off evidence, named as such: the Seven Miles tamping test is a single roaster's test. We found no standards document behind the popular 30 lb figure.

Where we looked up facts, the sources are listed at the end of the respective page.

Who has actually tested these machines

If you want results from people who ran the machines, these exist. We report what they named. We do not reproduce their ratings.

• America's Test Kitchen (2 July 2025) named the Breville Barista Express best overall and the Bambino Plus its compact pick.
• Serious Eats published a roundup of semi-automatic machines. We read a copy dated 2 May 2023, so its current state is unknown to us.
• CNET, Wirecutter, Good Housekeeping, TechGearLab, Reviewed and Taste of Home also publish tests or roundups. We could not read Wirecutter's.

How we make money

This site is funded through affiliate links to Amazon. If you buy through such a link, we receive a small commission; the price stays the same for you. The links are marked with an asterisk and labeled "Ad". More details are in the affiliate disclosure.

Spec sheets, standards and published sources. No own tests.

Found a mistake?

We correct errors and update the date on the page. Contact details are in the imprint. You can learn more about the editorial team under about us. Our picks stand side by side in the full comparison, and the glossary explains the terms.