Every year, the Nautilus treadmills secures a good spot in treadmill reviews, they build solid treadmills that are practical and fun to use. The Nautilus T616 and T618 are similar looking treadmills that are hard to miss, but there are some differences. The T616 is still a better treadmill than the average, but the T618 treadmill has a more powerfull motor, higher weight capacity, better cushioning, handlebar buttons, and thicker 3-ply belt.
A few of the both models common features are: 26 workout programs, Bluetooth Connectivity, Explore the World App and other fitness App options which provide exposure to fun treadmill workouts, contact and telemetry enabled heart rate monitor.
Motor Power: The motor on the T618 is a 3.5 CHP motor, while the Nautilus T616 has a slightly smaller 3.0 CHP motor.
Maximum Speed: Both treadmills have a top speed of 12 MPH.
Running Area: Both the T616 and T618 have identical belt sizes: 20″ X 60″.
Nautilus T616 |
Nautilus T618 |
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Here we list all available specs side by side so you can see which one of these treadmills would be a suitable choice for you.
Nautilus T616 vs Nautilus T618 Specs Table
| Max User Weight Capacity ?The maximum user weight that the treadmill can handle. | |
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| Motor Power ?How strong is the motor? We recommend at least a 2.25 HP motor for home use. | |
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| Maximum Speed ?Maximum speeds in miles per hour. | |
| 12 MPH | 12 MPH |
| Incline | |
| 0-to-15% | 0-to-15% |
| Decline | |
| Folding | |
| Running Area (Belt Size) | |
| 20″ X 60″ | 20″ X 60″ |
| Number of Programs | |
| 26 | 26 |
| Heart Rate Monitor | |
| Contact & Telemetry Enabled (bluetooth chest strap included) | Contact & Telemetry Enabled (bluetooth chest strap included) |
| Wireless Heart Rate Monitor | |
| Cooling Fan | |
| Bluetooth | |
| Display | |
| 2 DualTrack Blue Backlit LCD Displays | Dual-Mode Blue Backlit LCD Display |
| Web Browser | |
| Touchscreen | |
| Audio | |
| iFit Coach Compatible | |
| Tablet holder | |
| Warranty | |
| See Link | See Link |
| See Price at Amazon | See Price at Amazon |
Display and User Interface Comparison
The Nautilus T616 has a 2 DualTrack Blue Backlit LCD Displays and the Nautilus T618 has a Dual-Mode Blue Backlit LCD Display. 
Built in Programs
Both the T616 and T618 have 26 workout programs. Both treadmills are iFit Coach Compatible so you can get many different workout options.
Bottom Line
We gave the Nautilus T618 a rating of 95 over 100 while we gave 90 for the T616 because, the T618 has a more powerful motor, more user weight capacity, and a good price for the features you get.
