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Nautilus U618 Upright Bike Review

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How long will the Nautilus U618 Upright last?

Marketed with a durable look, the Nautilus U618 Upright Bike weighs a scant bit more than 83 lbs. when completely assembled and can hold users up to a maximum of 325 lbs. The covered warranty covers 10 years on the frame, 3 years on parts and electronics, and 1 year of labor along with the option to spend an additional $99 to extend the parts and labor to 5 years of coverage. The U618 is tailored more for light to moderate use and should last for several years with proper care and maintenance.

Brief Overview

The Nautilus U618 Upright Bike has a bit of functionality mixed with a bit of technology to keep riders motivated throughout each workout period. It has a compact design at only 38.5” long and moves easily on the oversized wheels to optimize space saving ability. Though it has a light frame the warranty covers 10 years which is nice as other models come with lower or no warranties at all. Overall, it is a decent cycling machine for people looking to add indoor riding to their exercise regimen.

Overall Quality

The Nautilus U618 Upright Bike has quite a few commendable qualities making it competitive in the residential market even with the strangely patterned gel seat. While the handlebars have the normal upright bull-look, the elbow rests are overlarge and keep users from properly gripping unless engaging the heartrate monitors. There are convenient buttons in the tip top of the handlebars that increase and decrease resistance through 25 levels to intensify training and keep users in focused on training. The console comes with two blue back lit LCD screens that are easy to read even though one is fully covered when engaging a streaming device. The U618 has 29 built in programs that work users through cardio and fat burning sessions in addition to collecting heartrate information. The console also tilts for better vision placement. Use of Bluetooth technology opens the world to interested cyclers and the option to share heartrate and performance information to several fitness apps. The heartrate chest strap is included so there is that.

Things we like

  • decent warranty
  • heartrate strap
  • 29 built in programs
  • budget-friendly

Things we dislike

  • X
    seat pattern
  • X
    limited quality


Dimensions 38.5"L x 24"W x 58.3"H
Maximum User Height 325 lbs (147 kg)
Assembled Weight 83.1 lbs (37.7 kg)
Weight 83.1 Pounds
Material Steel, Plastic (Frame)
Assembly Details Adult Assembly Required, Some Tools Provided
Number of Programs 29
Program Types Available Interactive Heart Rate, Manual, Custom, Random
Number of Resistance Levels 25
Heart Rate Monitor Type Chest Strap, Hand Grip
Activities tracked Average Speed, Calories Burned, Speed, Heart Rate, Trip Distance, Continuous Heart Rate, Trip Time, Daily Distance
Power Source Electric
Battery No Battery Used


Frame: 15 years / Parts & Electronics: 3 years / Labor: 1 year


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


The Nautilus U618 Upright Bike is a decent option for those looking to add cycling in the journey for better health. It has a credible warranty and comes with many commendable features including the option to ride through various destinations all over the world. Serious riders will appreciate the oversized elbow rests and convenient resistance change buttons located in the handlebars.