The REHIT program accelerates progress. The built in programming and recording of events creates the ideal feedback loop. It’s amazing how two 20 second blitz sprints can wear you out and the effect... See more
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Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
I've only been using it for three weeks, but the feedback is easy to comprehend. I was skeptical about doing high-intensity REHIT three times per week. Just two 20-second sprints each session. Well... See more
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I noticed a problem with my bike a few days after setting it up didn’t think a whole lot about it but then it recurred. I called into customer service. I received a call back immediately with full ins... See more
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Love the bike. Even on a busy day I can convince myself to take 10 minutes out to do a workout. I feel the positive impact on my resilience. It's evident that Carol Bike has created a company cultu... See more
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Company details
Written by the company
CAROL is the smartest, most effective exercise bike—with workouts backed by science. CAROL Bike learns to push you to your limit. With each short, AI-personalized workout your optimal resistance is applied instantly, so every second matters. Scientifically-proven to give you the most effective workout.
Contact info
London, United Kingdom
- +44 20 3808 5137
- marketing@carolbike.com
- carolbike.com
4.5
Excellent
450 reviews
Replied to 100% of negative reviews
Typically replies within 1 month
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Setup was easy
Setup was easy. Instructions on putting it together were super easy. And i love the bike so far - 3 or 4 weeks in.
March 30, 2026
Brilliant assembly instructions, great support, love the bike
My whole experience with Carol has been positive, from the delivery, the assembly that I did myself, and my one contact with their support team. Each step in the assembly has its own card and tool. The instructions are clear and assembly was easy. I reached out to support one time to get assistance with connecting a third party device. They were helpful, even though it wasn't a device that Carol partners with. And the support agent even followed up with an email with other helpful information.
Work outs have been fantastic. I love the fact that I can get a decent workout in under 10 minutes. I have definitely noticed that I feel better and stronger. I think the Carol bike has also helped with my knees.
March 10, 2026
Reply from CAROL Bike
Thank you so much for your kind words!
We’re delighted to hear you had a smooth experience from delivery and assembly through to support — and that our team could assist, even with a third-party device.
It’s fantastic to know you’re enjoying the workouts and seeing real benefits. Being able to get an effective session in under 10 minutes is exactly what CAROL is designed for.
If you ever need anything, we’re always here to help.
This bike is addictive
This bike is addictive! Not a huge fan of workouts but it's easy to get on and ride 10 minutes three times a week and see the benefits. The sprints are hard and the workout speeds by! Love the smart aspects of the membership and tracking data. My husband enjoys the rides as well...The only problem is I can't take it with me when I travel!
February 6, 2026
Reply from CAROL Bike
Thank you so much for your review!
We’re delighted to hear you’re enjoying the bike — especially that it’s easy to fit into your routine and delivering results with just a few short workouts each week. That’s exactly what CAROL is designed for.
It’s great to know you’re enjoying the smart features and tracking, and that it’s become a favourite for both you and your husband.
We hear you on the travel part — we wish you could take it with you too!
Great customer service
February 11, 2026
Reply from CAROL Bike
Thank you so much for your kind words!
We’re really glad to hear you had a positive experience with our customer service — providing helpful and responsive support is something we truly care about.
Prompt and Courteous Support
Had an issue with the tablet. CAROL support called me, suggested Facetime and and solved the problem on the call. Very pleased.
March 2, 2026
Unprompted review
Reply from CAROL Bike
Thank you so much for your kind words!
We’re really glad to hear our team could resolve the issue quickly and support you over the call — it’s great to know the experience was helpful and smooth.
If you ever need anything else, we’re always here to help.
Miles or Kilometers traveled doesn’t…
Miles or Kilometers traveled doesn’t show up on the trend. Seems like basic KPI. Requested to be added. Seems like an easy add or should have been included up front. Disappointed.
January 29, 2026
Reply from CAROL Bike
Thank you for your feedback.
We’re sorry to hear this has been disappointing — we understand how important it is to have key metrics like distance clearly tracked in trends.
We really appreciate you raising this, and your suggestion has been shared with our team as we continue to improve the app experience.
If you’d like to share more detail or have any questions, our support team would be happy to help.
This bike is extremely well built and…
This bike is extremely well built and I've been absolutely pleased with my experience so far. Wouldn't hesitate to recommend to anyone wanting something like this.
January 28, 2026
Reply from CAROL Bike
Thank you so much for your kind words!
We’re delighted to hear you’re pleased with your experience and that the bike is meeting your expectations.
It’s great to know you’d recommend CAROL — that really means a lot.
If you ever need anything, we’re always here to help.
Love the bike so far
Love the bike so far. It is really well built, the packaging was great as well and so easy to assemble.
January 26, 2026
Reply from CAROL Bike
Great to hear this — thank you for sharing!
We’re delighted to hear you’re enjoying the bike and found the packaging and assembly process smooth and straightforward.
If you ever need anything, we’re always here to help.
BEST CUSTOMER SERVICE EVER!
BEST CUSTOMER SERVICE EVER!
Mario is AWESOME! He responds in a timely manner and solves the issue quickly and easily! To be clear, the bike isn't the problem; in my case it's been me the rider not fully understaning my bike fully.
I LOVE MY CAROL Bike, but I am also a huge fan of their outstanding customer support and education that make the habit easy to continue & maintain.
February 23, 2026
Unprompted review
Reply from CAROL Bike
This is wonderful to hear — thank you for sharing!
We’re so pleased our support team could help you get the most out of your bike, and we’ll be sure to pass your kind words on to Mario — he’ll really appreciate it.
It’s fantastic to hear you’re loving your CAROL Bike and that the support and guidance are helping you stay consistent. That’s exactly what we aim for.
AI efficiency keeps you in your optimum zone
Carol is a very robust commercial grade bike. It is designed for maximum gains in the shortest time. Even for the busiest person, only 3 five minute rides per week is absolutely doable. Using AI to keep you in the right zone for maximum benefits there is nothing on the market that is comparable!
January 20, 2026
Reply from CAROL Bike
Great to hear this — thank you for sharing!
We’re delighted to hear you’re enjoying the bike and seeing how effective the short workouts can be, even with a busy schedule. That’s exactly what CAROL is designed for.
It’s also great to hear the AI-driven personalization is helping you stay in the optimal zone and get the most out of every session.
If you ever need anything, we’re always here to help.
Save your money
After paying more than 3k, they still want you to pay a monthly membership to use it. Unreal. It also does not integrate well with other apps, like Zwift
February 18, 2026
Unprompted review
Reply from CAROL Bike
Thank you for your feedback.
We’re sorry to hear this has been disappointing. We understand that both membership and integrations are important considerations when choosing a product like CAROL.
The membership is designed to provide access to personalized workouts, adaptive AI training, and ongoing feature updates, and we’re continuously working to expand integrations and improve the experience.
If you have any questions or would like help getting the most out of your bike, our support team would be happy to assist.
Love my CAROL bike!
Love my CAROL bike! I'm already feeling the benefits and it's so easy to stay committed and consistent with the 8 minutes 3x week. I've seen my cardiorespiratory health via my VO2 max numbers improve and am much less out of breath after intense bouts of effort.
January 13, 2026
Reply from CAROL Bike
So glad to hear you’re enjoying it — thank you for sharing!
It’s fantastic to hear you’re already seeing improvements in your VO₂ max and overall fitness. Being able to stay consistent with just a few short workouts each week is exactly what CAROL is designed for.
If you ever need anything, we’re always here to help.
2 Year Review
Throughout my ownership of this bike I have ranged from a 5 star review to a 1 star review. After 2 years I think I have settled on 3 stars. This review includes the bike, maintenance, and the subscription service.
1. Subscription Service: This is one of the biggest drawbacks that lowered the score. I think for $19.99 you should get more than simple access to the AI to do their advertised REHIT. For example, I think at that price it should cover some type of maintenance service or something like that.
It just seems a lot for 1 program. Without paying it they're aren't a lot of programs included in the bike so you're forced to either manually control it or get something like Zwift. I cancelled the $19.99 plan and I just use Zwift as it has almost all the same workouts plus more.
2. Maintenance: Hopefully you won't run into this issue but I had a case where the bike was making a knocking noise. I contacted support and they told me to simply take the cover off which meant taking the crank arms off. It seemed simple in the video but it was extremely difficult to even get the nut off of the crank arm to even get to the next step. My wrist is still sore from trying to do that. It's understandable as that nut was tightened at the factory but it's very hard to get off initially.
Also, you need a "crank puller" to then get the crank arm off after you get the initial nut off. That wasn't really described to me in the initial support request.
For this area I wish they would detail what tools you'd need to do the fix they are asking you to do and also explain it might be very difficult to get some of the components off and offer a service tech that could come out. This rolls into my request for some type of maintenance offer included in paying $19.99 a month.
3. The Bike Itself: I like the overall product in that it's unique in the sense of the flywheel design. Most bikes on the market today are traditional "spin" bikes that have a heavy flywheel. In those types you can't simply stop pedaling as you have to slow the inertia down of the spinning wheel. In the case of the Carol bike you can stop pedaling and it feels like a standard bike.
February 10, 2026
Unprompted review
Reply from CAROL Bike
Thank you for taking the time to share such a detailed review — we really appreciate it.
We’re glad to hear you value the bike itself and its unique riding experience. At the same time, we’re sorry that aspects of the subscription and maintenance didn’t meet your expectations.
Your feedback on the membership offering and what it should include is very helpful, and we’ve shared this with our team as we continue to evolve the experience. We also understand your frustration around the maintenance process — clearer guidance on tools and difficulty level is something we can certainly improve.
If you’re open to it, we’d love to look into your experience further and see how we can better support you — please feel free to reach out to our team directly.
Thank you again for your thoughtful feedback.
Great technical support with detailed…
Great technical support with detailed pictures so I could feel confident that I was buying the correct parts. Prompt shippping was also great. Repair was simple and easy to perform due to well designed equipment
January 13, 2026
Reply from CAROL Bike
Great to hear this — thank you for sharing!
We’re really glad our support team could help with clear guidance and that the repair process was straightforward thanks to the bike’s design. It’s also great to know everything arrived quickly.
Helpful from beginning to end!
December 22, 2025
Reply from CAROL Bike
That’s great to hear — thank you for sharing!
We’re really glad the experience was helpful from start to finish. If you ever need anything, we’re always here to help.
Reply from CAROL Bike
So glad to hear that — thank you for sharing!
We’re delighted the bike is helping you stay engaged and motivated. That consistency is exactly what CAROL is designed to support.
Great quality product
The purchase/transaction went smooth, shipping was quick to the US (about 1 week or so). The quality of the bike is top notch. Assembly is very straight forward and simply laid out. Setup and power-up was also straight forward. You really can't screw it up. After just a few rides i'm extremely happy with my purchase. Rehit is a cheat code.
December 8, 2025
Reply from CAROL Bike
Great to hear this — thank you for sharing!
We’re delighted the whole experience, from purchase and delivery through to assembly and setup, was smooth and straightforward. It’s also fantastic to hear you’re enjoying the workouts and seeing the value of REHIT so quickly.
If you ever need anything, we’re always here to help.
Best way to increase your VO2 max
My husband and I have it just over two weeks and absolutely love it! We bought it to improve our VO2 max and have already seen improvements. Love how easy it is to use and how many different modes they have.
November 26, 2025
Reply from CAROL Bike
This is great to hear — thank you for sharing!
We’re delighted you and your husband are already seeing improvements in your VO₂ max and enjoying the different workout modes. It’s fantastic to know how easy it’s been to get started and stay consistent.
If you ever need anything, we’re always here to help.
Great Bike With Potential To Do Even More
I love this bike and the basic 20 sec Rehit workouts it was built for. I've already seen increases in VO2 max in just a few weeks. The bike is very solid and well constructed and looks great in my office. I also like the software but feel that there is more opportunity to expand upon it's features and visualizations both in the rehit workouts and in the free ride workouts.
November 26, 2025
Reply from CAROL Bike
Thank you for your thoughtful feedback!
We’re really glad to hear you’re enjoying the bike and already seeing improvements in your VO₂ max — that’s exactly what CAROL is designed for. It’s also great to know you’re happy with the build quality and how it fits into your space.
We appreciate your suggestions around expanding features and visualizations — this is valuable feedback and something we’re continuously working to improve.
If you ever have more ideas or questions, we’d love to hear from you — and we’re always here to help.
Constant updates and response to…
Constant updates and response to questions are prompt.
November 21, 2025
Reply from CAROL Bike
Great to hear this — thank you for sharing!
We’re really glad you’ve found the updates and support responsive and helpful. Providing a smooth, evolving experience is something we care deeply about.
If you ever need anything, we’re always here to help.
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