Best Fold-flat Treadmill : The 3G Cardio 80i Review

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May 10 2020
Buy The 3G Cardio 80i In This Review
Our Rating: 
Average: 4 (1 vote)

Can The 3G Cardio 80i Fold-flat Treadmill Really Save Space?

One of the best folding treadmills for home that we have reviewed, this 3G Cardio 80i follows the ‘Simple by Design’ mission statement from 3G Cardio. They are a company whose goal is to deliver innovative yet simplistic machines that give the user exactly what they need with no extra fuss.

Rather than fancy electronic ‘extras’ 3G Cardio focus on superior parts and function of their treadmills and vibration machines. You will still get entertainment and programming options, which can be linked with iPads or Tablets for access to supportive apps, but without the unnecessary added features of some machines in the same price category. This simple business model allows 3G Cardio to deliver great customer service, high quality products and very competitive prices.

The $1000-$2000 category of treadmills is a competitive market and the 3G Cardio 80i is the best fold flat treadmill available. It’s a compact machine that folds flat, folds up and performs well at high speeds.

A Fully Functioning Treadmill That Folds Flat? The Space Saving 3G Cardio 80i

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3G Cardio 80i Console

It has a basic display that is large and easy to read, which features an active ¼ mile track and heart rate sensors.

The upper display folds down to ensure it doesn’t get damaged when folded flat but it’s also convenient to offer a flat service for a laptop.

The console also offers 1 touch speed and incline quick keys, that allow you to jump quickly between variations. You can also speed up your workout with a quick dial speed adjustment. The audio input and speakers can be linked to your MP3 Player, IPhone or Android.


The 3G Cardio can be folded flat to be stored under a bed or flat into a cupboard. The fold flat mechanism is simple and easy to lower and can be performed with little strength needed, the display screen is safely folded down to protect the screen. When folded flat this treadmill is only 9.75” high.

Uniquely this treadmill can also be folded upright like a traditional folding treadmill, this gives you the opportunity to be creative in when and how you store your treadmill.

This is the very best dual folding treadmill available, the technology makes this machine simple to move around the home and to install. The wheels further allow you to move the treadmill to the perfect position.


The 80i has a powerful heavy duty 3.0 HP motor which can reach 11mph and is the most powerful of any fold flat treadmill on the market, it powers a large 60” running surface with the stability of a treadmill twice its price.

With an impressive 15% incline, this machine can give users of all abilities a great workout. The heavy-duty belt and frame enables this to be used by people weighing up to 325lbs.

The quality of build reflects one of the best warranties available, a lifetime guarantee on the motor and frame, 5 years parts and 1 year labor.

Best Fold-flat treadmill 3G Cardio 80i Is Great For Apartment Living

3G Cardio 80i Fold-flat Treadmill FAQ’s

What are the dimensions of the treadmill when in use?

The 3G Cardio 80i Fold Flat Treadmill enables you to get a great workout as well as saving space. It has a low step up height of only 6” meaning you’re closer to the floor and further away from the ceiling than most other treadmills. The full dimensions of the treadmill are 74” X 33” X 49”.

What are the fold flat dimensions of this treadmill?

If you don’t have a lot of space available the 80I can fold flat to store under a bed or upright in a closet. The full dimensions of this treadmill when folded flat are 74” X 33” X 9.75” (height).

What are the vertical fold up dimensions of this treadmill?

If you prefer to fold the treadmill upright to save space in your room or to roll into a large cupboard the dimensions are 39”L X 33”W X 70”H.

What is the running belt size of the 3G Cardio 80i?

This treadmill is 18.5” X 58”, which is impressive to even the most experienced runners. This machine offers exceptionally stability.

What is the size of the motor?

The motor on the 80i is 3.0 HP which is very powerful for a folding treadmill. It offers a quiet yet high performing experience.

What is the top speed of the 3G Cardio 80i Fold Flat Treadmill?

A lot of fold flat treadmills don’t offer a large range of speeds, especially that go above 10mph. This treadmill offers a speed ranging from 0.5 to 11 mph.

Does this treadmill have an incline option?

Yes, the 3G Cardio 80i has a maximum incline of 15%. For a fold flat treadmill this is excellent.

What is the maximum user weight?

The maximum user weight for this treadmill is 325lbs, which is very impressive from a folding treadmill and an example of how high quality machine this is.

How much does the machine weigh?

The 3G Cardio Fold Flat Treadmill weighs 225lbs, but can be easily moved via its wheels and folded up and down quickly.

Can I use this machine with my IPhone?

Yes, the 3G Cardio 80i has built in speakers and audio input for your IPhone.

Is assembly of this treadmill difficult?

No, there is no assembly needed for this treadmill. Once delivered it folds up, locks in place and is ready to use. No confusing instructions or tools needed.

Can you monitor heart rate?

Yes, it has a hand sensor heart rate monitor but it does not show your heart rate with a chest strap heart rate monitor.

Does it still operate when the console is folded flat?

Yes, it operates with the console folded flat.

Does this machine have a slow stop?

Yes, this machine will gradually bring the speed to a slow stop rather than stopping suddenly.

Can the 3G Cardio 80i be placed on a carpet for use?

Yes, there are treadmill mats available but this machine can safely be used on carpets.

Is this a heavy-duty treadmill?

Yes, this is heavy duty and solid treadmill that is built to perform and last.

Is it noisy?

No, the powerful motor and solid build offer a quiet user experience.

Can you perform interval training on the treadmill?

Yes, the 3G Cardio 80i has quick speed keys plus an adjuster so you can rapidly change speeds. This is perfect to perform intervals properly, interval training is using set periods of slow speeds followed by set periods of fast speeds. For instance, you could walk for 60 seconds and then run for 60 seconds for 20 minutes.

How easy is the 3G Cardio 80i to fold flat?

This treadmill is very easy to fold flat and can be performed safely by all users.

Does it have any preset workout programs?

Yes, the 3G Cardio 80i includes 8 built in workout programs. It includes workouts such as Fat Burning, Heart Rate, Intervals and Climbing.

What does the display screen show?

The display screen shows time, speed, distance, incline and calories burned.

What accessories does it come with?

The console has two water bottle holders built in speakers and an audio input section. Due to the 3G Cardio focus on the important parts of your workout experience they do not have internet access or fancy displays, just the absolute minimum you need for efficiency.

How does it look?

The frame is good looking, it looks solid yet aesthetically pleasing but the console looks quite basic and outdated. Although it gives you everything you need, most users are used to LCD displays, internet connections and hi-tech visuals. When folded its small height doesn’t make it look too bulky but please bare in mind that this is a very solid build machine, that’s built to last.

Need To Store A Treadmill Under The Bed? You Can With The 3G Cardio 80i

So, What’s the review verdict?

The 3G Cardio 80i Fold Flat Treadmill is the very best fold flat treadmill available on the market. It’s focus on quality of build, as well as space saving instead of just ‘bells and whistles’, puts this treadmill in a category of its own.

This treadmill is the one for you if you need something that folds flat but is also high performing.

It’s a minimalist machine for those who don’t need constant entertainment, the console is quite basic but with so much available through IPad, Tablet or Laptops, in this day and age I prefer manufacturers to focus on build, customer support and performance. Just like 3g Cardio have done.

Having a fold flat and fold upright machine that performs well is a difficult thing to manage. Yet, the 3G Cardio 80i has a powerful 3.0 HP motor, strong frame and wobble free deck gives the experience of a commercial grade non-folding treadmill.

The maximum speed is 11 mph which is average for non-folding treadmills but the incline at 15% is impressive and offers another variation to challenge yourself with this machine.

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If space saving is your main goal having the option to fold both upright and flat is convenient, it makes this treadmill versatile and not too imposing. The wheels add to its transportability further.

Overall it is a great value for money, it makes our best treadmills list and I think it's the best fold down treadmill you can buy.

3G Cardio Trailer [Video]

3G Cardio Trailer

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