Name: Keurig K40
Brand: Keurig

Overall Rating

Coffee Quality (40%)

Design & Features (20%)

Durability (20%)

Ease of Use (10%)

Brand Reputation (10%)

The Bottom Line

The K40 is one of Keurig's most iconic brewers. It's simple and easy to operate with a solid 48 oz reservoir, but it has just a 10 oz max brew size and no special features. Now discontinued, check out the K-Classic instead.

See it on Amazon →See it on 1st In Coffee →

See it on →

See the Keurig K40 on Amazon →

See Keurig K40 on Amazon →

See the Keurig K40 on 1st In Coffee →

See Keurig K40 on 1st In Coffee →

See the Keurig K40 on →

See Keurig K40 on →

Read our review →

Check out instead →

The Coffee Maven's editors select and review products independently. We may receive a commission if you purchase through one of our links at no additional cost to you.

Key Features of the Keurig K40

Key Features of Keurig K40

Product Line/System: Keurig 1.0 Elite
K-Cup Compatibility: Unlicensed K-Cups, Keurig 2.0 licensed K-Cups, and ground coffee with the My K-Cup
Brew Sizes: 6 oz, 8 oz, 10 oz
Water Reservoir: 48 oz
Water Filter: Compatible but not included
Display: Button controls for Brew Size and Power; LED indicators for Add Water, Descale, Heating, Auto-Off and Power
Temp Control: No
Strength Control: No
Dimensions: 9.8"W x 13.0"D x 13.3"H
Weight: 12.0 lbs
Other Features: Quiet Brew Technology, Auto-On/Off, removable drip tray, comes with K-Cup variety pack

Keurig K40 Overview

The K40 is one of Keurig's flagship brewers and was introduced as an upgrade to the B40, though the two models have the exact same specs.

Currently discontinued, the K40 has been replaced by the K-Classic, which offers many of the same features:

48 oz reservoir
No Strength Control or Temp Control
Auto-On/Off functionality and removable drip tray
No pod-scanning system (found on Keurig 2.0 brewers) so it's compatible with all types of K-Cups

The only differences between the K40 and K-Classic are the K-Classic's slightly expanded brew sizes (6, 8, and 10 oz) plus its upgraded brewing system that ensures you're brewing with Keurig's latest and greatest technology for hotter, stronger cups.

You may also see 4 model numbers that look identical: K40, K45, K50, and K55.

What's the difference?

The K40 and K45 were originally released as Keurig's K-Elite brewers. Both came with the K-Cup variety pack, but the K45 also came with the water filter starter kit.

In 2015, Keurig rebranded the K40 and K45 K-Elite brewers as the K50 and K55 K-Classic brewers.

Pros

No pod-scanning technology so brews both licensed and unlicensed K-Cup pods
The iconic brewer that put Keurig on the map
Foolproof to use
Comes with K-Cup variety pack

Cons

Discontinued model
Only 2 brew sizes (8 oz, 10 oz)
No Brew Strength, Temp Control, or other features
No water filter starter kit or reusable My K-Cup

Is the Keurig K40 for you?

Are Keurig K40 for you?

The discontinued K40 is still worth purchasing if you can get a good deal. It doesn't have any outdated tech that limits its usability and is still a quality model if you don't mind losing the 6 oz brew size.

If you like the K40 but want to add a water filter starter kit, take a look at the K45.

However, we really do recommend going with the K-Classic, which is currently in production, supported by Keurig, and has all of the features you'd find on K40-K55 brewers.

Check it out on Amazon →

Check out Keurig K40 Amazon →

Check it out on 1st In Coffee →

See Keurig K40 on 1st In Coffee →

See the Keurig K40 on →

See Keurig K40 on →

Check out the instead →

Check out instead →

Check out the Keurig K40!

Check out Keurig K40!

Check it out on Amazon →

Check them out on Amazon →

Check it out on 1st In Coffee →

See the Keurig K40 on →

See Keurig K40 on →

Check out the instead →

Check out instead →

More Keurig Reviews From The Coffee Maven

Keurig K-Supreme Plus SMART

Overall Rating: 92

Keurig's best brewer, the K-Supreme Plus SMART builds on the K-Supreme Plus with more Temp/Strength settings, a larger digital display, and BrewID to recognize your K-Cup and recommend brew settings for a best-in-class cup.

Learn More →

Keurig B150

Overall Rating: 81

A sleek, customer-facing commercial brewer with a 90 oz reservoir and color touch LCD display, the B150 makes brewing simple for small and medium settings. Now-discontinued, check out the K150 or K150P instead.

Learn More →

Keurig K150

Overall Rating: 83

A sleek, customer-facing UL Commercial listed brewer with a 90 oz reservoir and color touch LCD display, the K150 makes brewing simple for small and medium settings. For direct water line compatibility, check out the K150P.

Learn More →

About The Coffee Maven

Bryan De Luca

I'm Bryan but most people know me as The Coffee Maven. I grew up outside Boston, Massachusetts and received my Bachelor's degree in Biochemistry from Providence College. My first introduction to coffee was during my college days, when I used it as a source of caffeine to fuel late-night study sessions, but soon I became obsessed with the chemistry of coffee. How did changes to water temperature or contact time affect its taste? Why do beans from Africa taste fruity while beans from Indonesia taste spicy? I launched The Coffee Maven in February 2017 to explore these questions and help others brew their perfect cup. Welcome to my site, and thanks for reading!

Keurig K40 Review

Key Features of the Keurig K40

Key Features of Keurig K40

Keurig K40 Overview

Is the Keurig K40 for you?

Are Keurig K40 for you?

Keurig K40 Review: An In-Depth Look

Check out the Keurig K40!

Check out Keurig K40!