Our Ratings are 4.78 Stars out of 5 Stars from 21,689 Reviews as of 3/1/23

Nautilus T618 Treadmill Review

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How long will the Nautilus T618 last?

The Nautilus T618 folding treadmill is sturdily built and weighs a reassuring 253 lbs. Users up to a maximum of 350 lbs. can confidentially work out safely without harm. The warranty has been upgraded and now offers 15 years on the frame and motor, 5 years on mechanics and electronics, and a full 2 years on labor. The T618 has a compact frame at 6.5 feet and is easily folded for space saving options. It is designed for moderate use by walkers to light joggers and will last for many years of use with proper care and maintenance.

Brief Overview

The Nautilus T618 is the newest update to the performance folding treadmill series and contains a few upgrades from the T616 to warrant the uptick in the price. It is well-equipped to meet the needs of most fitness enthusiasts and remains somewhat budget friendly at under $1500. It is covered by a decent warranty and offers a multitude of options that are competitive in today’s treadmill industry despite users having to provide their own streaming devices.

Overall Quality

The Nautilus T618 folding treadmill has an upgraded 3.5 CHP motor that provides smooth performance and speeds of up to 12 MPH for those who like to sprint during interval training. While the belt remains the same roomy 20” x 60”, it is slightly thicker, and the rollers are a tad bit larger in the T618 design. Users can incline up to a 15% elevation while enjoying the newly patented rebound suspension system that softens the landing at the front of the deck while causing a rallying effect on impact that pushes users forward into their next stride or running pace. It is quite clever and keeps energies high. Two easy to read blue backlit displays adorn the console of the Nautilus T618 folding treadmill and offer pertinent performance info that stays visible even with streaming devices resting on the integrated tablet holder. The console is configured to hold up to four individual user profiles and comes with 26 built in workouts to keep cardio fitness at the highest levels. Connect to an Explore the World app offers a variety of workouts in different locations with 3 free courses and more available with a paid subscription. The T618 also has a USB port to charge devices, Bluetooth connectivity, and an audio jack for playing music through the integrated speakers.

Things we like

  • ok warranties
  • tech options
  • quality parts

Things we dislike

  • X
    must use own streaming device


Material Steel
Dimensions 57.6"L x 35.2"W x 72.2"H
Power Source Corded Electric
Weight 215 Pounds
Maximum Weight Recommendation 300 Pounds
Number of Programs 26
Maximum Incline Percentage 15
Deck Length 60"
Screen Size 2.5"


Frame & Drive Motor : 15 Years / Parts & Electronics:5 Years / Labor: 2 Years


We invite you to see our other treadmill reviews to help you narrow your search for your next fitness machine.


The Nautilus T618 is an all-star folding treadmill that remains budget friendly at less than $1500. It has commercial grade features and technical attributes that make it comparable and competitive with other folding treadmills in the same price range. While consumers must provide their own streaming devices, the T618 can keep operators connected to the outside world which is enough to make it quite valuable to a multitude of users along with the more than adequate included warranties.