Neato Botvac D4 Connected Review

The D4 is in a series with other siblings that have the same 'D' shape compared to the usual circular or 'O' shape.

Navigation

The D4 did about average, covering most of the room without issue, but routinely getting hung up when trying to clean under the dining room table and chairs.

The D4 would begin to clean under the chairs, then seemingly panic and spin around a few times until it located a suitable exit route, omitting the confined areas around the chairs.

The Neato D4 did quite a bit better in our docking evaluations, heading straight for its base when it was in the same room and doing pretty much the same when it was in a different room, with only the occasional odd turn thrown in as it tried to find its way home.

For our final test of the D4, when it came to navigation, we looked at how the robot handled areas of the floor where the color abruptly transitioned from light to dark. In some robots, this can be an issue, as it can accidentally trigger the edge detection sensors and cause the robot to skip cleaning that area. Luckily, the D4 has no such issue, cleaning our dark area rug on light carpet without any issue whatsoever.

Home Coverage

The D4 systematically maps your home as it cleans, cleaning multiple rooms with ease and even returning back to its home base to charge and automatically resume cleaning if the battery level becomes too depleted mid-cycle.

Next, we evaluated the spot cleaning capabilities of this Neato robot vacuum and found them to be quite effective. On its default setting, it will clean an area of about 49 sq. ft. You can also set this area to be quite a bit larger — 169 sq. ft. — in the app. We did wish that the D4 would make multiple passes, but you can always initiate the spot cleaning mode twice in a row for heavy messes.

This robot also did very well in our furnished room test, though it was usually hit-or-miss if the robot would venture underneath the chairs to clean, as it will omit cleaning the most cluttered areas. However, you can always cordon off these areas using the D4's very effective barrier system.

You can use a roll of magnetic tape, or you can draw virtual no-go lines in the app after the D4 has mapped your house.

Carpet Cleaning

The D4 got off to a strong start in our edges and corners test, only leaving a tiny triangle of uncollected coffee grounds measuring about 1.5" at its widest point and a small strip of leftover mess about an inch wide along the walls of our testing pen.

This robot vacuum also delivered a strong showing in our flour collection test, getting up most of the debris, but it still left a noticeable amount of residue.

It continued its trend in our rice collection challenge, doing exceptionally well on the low-pile carpet and leaving only trace amounts of rice behind. It also did well on the fluffier carpet, but did leave a bit more rice behind — about ⅛ teaspoon behind. It did about the same with the oats and finished out a solid job in our large particle pickup test — mini-wheats.

It only missed a single mini-wheat on the low-pile carpet, but missed two on the fluffier carpet. It seems essentially luck-based whether the mini-wheat will actually get sucked up or just get pushed around.

Hard Surface Cleaning

This robot again delivered a great performance in the edges and corner test, only leaving a small strip of leftover debris, but it definitely didn't clean as closely as the other Neato models that have a rotating side brush.

However, the D4's performance plummeted in our flour cleaning test, leaving a visible residue across the surface of the hardwood floor and failed to get any of the flour out of the cracks between the boards. Fortunately, it did much better at collecting oats and rice from the hard floors, only leaving some tiny fragments behind in both of these tests.

It also did quite well with our final hard floor cleaning test, collecting 4 out of 6 of the mini-wheats that we laid out.

Pet Hair

This vacuum collected almost 2 of the 5 grams of hair that we spread out on the fluffier carpet, with almost all of it successfully ending up in the collection bin, rather than tangled up around its brush. It did struggle a bit more with the flat carpet, only getting 0.83 grams out of 3.

Smart Connect

This robot maintained a reliable network connection throughout the course of our testing, unlike some of the other robots that required frequent resets and forgetting and reconnecting to the network. The D4 can pair with existing smart home setups, like Amazon Alexa, Google Home, or IFTTT, and has a whole host of remote functions that you can control through its mobile app. You can view the cleaning map of the last time the D4 cleaned, locate the robot, track maintenance tasks, and set up no-go areas for the robot to omit cleaning. This is also how you set up a cleaning schedule for the D4.

In addition to setting your cleaning profile to Eco or Turbo and gentle navigation, you can also start the robot cleaning, start a spot clean, or send it home to charge using the buttons on the robot itself.

Value

The D4 is a fantastic value, earning it the Best Buy Award. While it doesn't have the lowest price of the group, it holds its own against the best of the best and is the least expensive model that doesn't exhibit some serious deficiencies.

Conclusion

If you are shopping on a budget for a new robot vacuum but don't want to make too many concessions in terms of performance, then the Neato D4 should be the first product you consider. It scored above average across the board and only is slightly worse than the top model, but sells for hundreds of dollars less.