Keurig K40 Review

Overall Rating
78
Coffee Quality (40%)
75
Design & Features (20%)
75
Durability (20%)
80
Ease of Use (10%)
85
Brand Reputation (10%)
85

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Currently discontinued, the K40 has been replaced by the K-Classic, which offers many of the same features: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

Is 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.

Keurig K40 Review: An In-Depth Look

Check out the Keurig K40!

Check out Keurig K40!

Keurig K40
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.

More Keurig Reviews From The Coffee Maven

Keurig K575

Keurig K575
Overall Rating: 88
The crown jewel of the Keurig 2.0 pod-scanning system, feature-rich K500 series brewers offer 11 brew sizes (up to 30 oz) and massive 80 oz reservoir. Now discontinued, we recommend the Keurig K-Duo Plus instead.

Keurig K-Mini

Keurig K-Mini
Overall Rating: 84
The super-slim successor to the K10/K15, the Keurig K-Mini is just 4.5" wide and brews 6-12 oz with its "fill before each use" reservoir. If you want fancy features, look elsewhere. If you want compact coffee, look here.

Keurig K475

Keurig K475
Overall Rating: 87
With 10 different brew sizes up to 30 oz, a sizable 70 oz reservoir, and an intuitive color touch display, K400 series brewers made K-Cup coffee easy. Now discontinued, we recommend the Keurig K-Duo Plus instead.

Search