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#1 Proform Performance 400i Treadmill Review

Chris L.
January 29, 2021

The Proform Performance 400i Treadmill is great for cardio seekers interested in iFit. In addition to getting a 1-year membership free with your purchase, you can also watch trainer-led workouts from its 7-inch HD touchscreen.

Is the Proform Performance 400i Treadmill best for you?

The Proform Performance 400i Treadmill comes with plenty of options for people who tend to get bored while running. You have 50 built-in programs with each one focusing on a different area of your health. These programs utilize all of the treadmill's speed and incline settings, so you can browse at your leisure to see which programs you enjoy the most.

No matter what your needs are, this treadmill comes with plenty of features to keep you coming back. Dual 2-inch speakers allow you to listen to music or your virtual trainer's instructions to push yourself to the limit. It even folds up when you're done to give you more space around the house.

Consider Proform Performance 400i Treadmill if...

  • You need numerous workout programs. This treadmill comes with 50 workout programs already built into the machine. That means you have a lot of options to explore to enhance your fitness.
  • You want your tablet with you. The integrated tablet holder allows you to keep your mobile device handy while keeping an eye on the display screen to monitor your stats.
  • You like the SpaceSaver design. This treadmill is already fairly compact. However, it also folds up easily if you need to increase the floor space of the room it's in.

Avoid Proform Performance 400i Treadmill if...

  • You'd prefer a fan. Many treadmills these days come with cooling fans to make you more comfortable as you jog. You won't find that feature here.
  • You want wireless heart rate monitoring. You can keep track of your heart rate by gripping onto the sensors in the handlebars. However, there's no wireless band to keep track of that data without having to hang on.
  • You need better customer service. A lot of reviews indicate that Proform's customer service needs improvement. If you have questions about your machine, then you may have to wait a while to get answers.

Proform Performance 400i Treadmill pros & cons


  • Automatic incline and speed settings
  • ProShox cushioning
  • Audio auxiliary port
  • 1-year subscription to iFit with your purchase


  • Small track rollers
  • Short running track

Construction and design

  • Motor: This treadmill comes with a 2.0CHP motor. This doesn't give the machine as much power as other models, such as the Proform 905 CST, which comes with a 3.0CHP motor.
  • Running Surface: The running area measures 18" x 50", which is preferable for individuals with shorter strides.
  • Touchscreen: The Proform Performance 400i treadmill comes with an upgraded 7-inch HD touchscreen. This allows you to access your stats and iFit membership with ease.
  • Speakers: Dual 2-inch speakers are built into the machine. You can plug your MP3 player into the device and listen to playlists with ease.
  • Built-in Programs: There are 50 workout programs in this machine. Different programs focus on different aspects of your health, such as endurance training or calorie burning.

Key Proform Performance 400i Treadmill Specs

Top Speed
10 mph
Running Surface
18" x 50"
10 degrees
Max Weight Capacity
300 pounds
Size (Dimensions)
65.77" x 32.75" x 56.42"
Lifetime on frame, 25 years on motor, 1 year on parts and labor

Reasons to buy Proform Performance 400i Treadmill?

  1. You're mostly interested in walking. While this treadmill supports speeds of up to 10 mph, it performs best under slower speeds. However, a lot of people prefer power walking or jogging, in which case, this machine is right for you.
  2. You want to protect your joints. Ordinarily, running places a ton of stress on people's knees and ankles. But with ProShox cushioning, the stress on joints is reduced by as much as 28 percent.
  3. You're on a budget. Considering some treadmills cost several thousand dollars, the fact you can get this one for a few hundred dollars makes it a great buy.

Reasons to avoid Proform Performance 400i Treadmill?

  1. You're taller. This treadmill comes with a shorter track than average. Many other treadmills give you a 22" x 60" belt to run on. The fact this one only has a length of 50 inches means it may not be suitable for exceptionally tall individuals.

What real Proform Performance 400i Treadmill reviews say

We spent 18 hours scouring the web (reading over 253 customer reviews). Our conclusion? Proform Performance 400i Treadmill receives high praise! Our average consolidated user rating sits around a 4.6 - 4.74 (across several hundred reviews). Proform Performance 400i Treadmill scored higher, on average, compared to their closest competitors.

What reviewers like

  1. "The display and speakers are great, the water cup holders are a good depth and width."
  2. "The treadmill keeps the history of all of your workouts. It’s nice to see how your time and distance improves with time!"
  3. "It was such an affordable option and it is so sturdy and professional looking."
  4. "I have used over 50 times already with the ifit workouts ( get a year free) and no issues!"
  5. "Easy to connect to wifi."

What reviewers dislike

  1. "Moving it from one room to another can be tricky if you have small doors."
  2. "The only thing is that it may be a little narrow if you are a tall person but that’s not and issue for me."
  3. "My only complaint it is the console seems to separate so the tablet stand shakes so I added a bracket to tighten it which works."
  4. "It does have a bit of a noise while running but what a normal treadmill sounds like."
  5. "Took my wife and I about 1 hour to assemble."

Our verdict

The Proform Performance 400i Treadmill is a good value for the price. The 50 preset programs alone are amazing, and you get even more with an iFit subscription. Plus, there are plenty of other bonuses, like an integrated tablet holder and audio system, that allow this machine to compete with machines that cost twice as much.

While it's compact, that comes at a price. The running track is much shorter than what you can get elsewhere. If you have taller people in your household who want to use the treadmill, they may find it uncomfortable. However, if everyone's shorter, then that may be a moot point.

Where to buy Proform Performance 400i Treadmill

Amazon has the Proform Performance 400i Treadmill available for a great price. You even get free shipping on most Proform products!