Cybex Eternis M4 All-Terrain Stroller Review


Last year, Cybex released a wide range of strollers for any lifestyle. One of their new all-terrain models is Cybex Eternis M4 which features a very compact one-hand fold and a light weight of only 21 lbs.

The Cybex Eternis M4 rolls on four never-flat foam-filled hard-rubber wheels with 8″ wheels in the front and 11.5″ wheels in the back.

These wheels can handle different kinds of terrain from uneven city streets with lots of cobblestones to the countryside. The all-wheel suspension makes the ride even smoother.

Despite the lightweight, it is full of great features like a large canopy with a dark mesh window, a large basket, a roomy seat, flip-flop-friendly brake, all-wheel suspension, an adjustable handlebar, and a swing-away bumper bar.

The seat can accommodate a child from birth and up to 55 lbs. The one-hand compact fold with an automatic lock and standing fold make it great for travel and public transit.

Just like all Cybex M models, it can be converted into a travel system or a stylish pram. You can remove the seat completely and use only the frame of the stroller. This could be your ONLY stroller.

With the Eternis M4 model, Cybex has created serious competition for other all-terrain strollers like BOB Motion, Bumbleride Indie 4, and Baby Jogger City Mini GT.


I gave it 5 out of 5 stars because I think this is a very practical stroller that has all the necessary features parents are looking for and the price is very reasonable.  On top of that, it has a very compact fold and weighs only 21 lbs.

This is probably one of the lightest all-terrain strollers on the market right now. The design and colors are very modern and sleek. The only thing I would add is a magnetic closure to the mesh panel in the canopy.

I would also like it to work with the most popular car seats instead of just Cybex car seats.

You can get Eternis M4 right now in one of the five beautiful colors for around $369. It comes with a swing-away bumper bar and an infant car seat adapter for Cybex car seats.

Buy Cybex Eternis M4 Stroller »




Like all of the Cybex M models, it has a large three-panel canopy with a zipped-in mesh panel that goes down all the way to the included bumper bar. The dark mesh provides shade while improving air circulation. 

Since there is no peekaboo window you can use the dark mesh panel to look at your child. I wish there was a mesh cover for when it gets windy.



The seat is 13.5″ wide with a 20″ seat back and a measurement of 26″ from the back of the seat to the top of the canopy. As you can see, the seat is a little wider and the canopy is a little higher than Cybex Balios M which has a reversible seat. Your taller toddler will have no problem fitting in.

The seat features your typical strap recline where you need only one hand to recline the seat, but both hands to bring it back up. The recline goes to almost a flat position suitable for a newborn.

If you want to put a young baby into the seat, I would recommend using an infant insert for additional support. The seat can accommodate a child from birth and up to 55 lbs.



It has an adjustable padded 5-point harness with a center release buckle. The good news is that the waist straps are connected to the shoulder straps so there are no puzzle pieces. Very easy to lock and unlock.



The telescoping handlebar goes from 37″ up to 42″ from the ground. Great for taller and shorter parents.


It comes with a nice swing-away removable bumper bar.



The basket is large but is a little harder to access than Cybex Balios M because of the lower position of the seat and the crossbar. You will be able to fit a larger diaper bag in it plus some small essentials. I wish it had an expendable back panel so it would be easier to access the basket.



The flip-flop-friendly brake is always a big plus in my book!



It rolls on four never-flat foam-filled hard rubber wheels with 8″ in the front and 11.5″ wheels in the back. These all-terrain wheels are designed to handle any kind of terrain. Great for long walks at the park or city streets with uneven sidewalks. It can handle grass, mulch, or gravel with ease.

One of the reasons I was very excited to see the Eternis M4 model was its large all-terrain wheels. There are not a lot of strollers like these on the market. Most of the all-terrain strollers have three wheels and are often designed for jogging. Those joggers are bulky and heavy.

There are also a lot of all-terrain strollers with a reversible seat which add to the weight and the fold. But what about all-terrain four-wheel strollers with a regular seat and compact fold? Not that many! So, I predict this is going to be one of the best-selling models.

Like all Cybex M models, Eternis M4 has an all-wheel suspension.



Another great feature that ALL Cybex M models have is the ONE-HAND FOLD. This is the type of fold all parents are looking for. All you need to do is to pull on two straps located in the middle of the seat and the stroller will fold in half. Easy!

The fold is very compact and there is an automatic lock and standing fold. The folded dimensions are 29.5″L x 23″W x 14″H. As you can see, this is a very compact fold for an all-terrain model.



You can turn your stroller into a stylish pram by replacing the seat with a matching bassinet called Cybex Carry Cot M. It features a comfortable, extra-wide mattress that ensures an ergonomically correct and comfortable lying position.

The integrated UVP50+ sun canopy protects from sun, wind, and rain. The carrycot weighs only 8 lbs and can accommodate a child from birth and up to 20 lbs. It works with ALL Cybex M models. How great is that?



You can also convert your stroller into a travel system by using it with one of the Cybex infant car seats. You can put the car seat on top of the main seat without removing it, or you can remove the seat completely and put the car seat right into the frame.

I like the look of the Cybex infant car seat with just the stroller frame. Now, as much as I like Cybex car seats, I wish it would work with other popular brands.



-No mesh window closure. The large mesh panel is a big plus, but I wish it had a closure in case it’s windy, rainy, or sunny.

-Works only with Cybex car seats. I wish it would work with other popular car seats. While the Cybex car seats are at the top of my list, they are a little pricey. So it might be hard to afford for parents who are on the budget.


Stroller weight: 21 lbs
Weight limit: 55 lbs
Folded dimensions: 29.5″L x 23″W x 14″H
Handlebar height: 37″ – 42″
Seat to canopy height: 26″
Front wheels: 8″
Rear wheels: 11.5″
Overall length: 34″
Overall width: 23″


The Cybex has a 2-year warranty from the original date of purchase and you have to be the original owner.

Available colors

The Cybex Eternis M4 comes in five colors: moon dust, grape juice, autumn gold, hot & spicy, and true blue. All come with a black frame.


Where to buy it

You can get Cybex Eternis M4 in one of the five beautiful colors for around $369. It comes with a swing-away bumper bar and an infant car seat adapter for Cybex car seats.

Buy Cybex Eternis M4 Stroller »

2 thoughts on “Cybex Eternis M4 All-Terrain Stroller Review”

  1. Hi Katrin! I am debating on this Cybex Eternis M4 and the City Mini Gt. My concern with the Cybex is the weight limit is 10lbs less than the City Gt, and I have a tall/heavy 43lbs 3year old toddler! I know for my walks I need an all terrain stroller. My other concern is the colors on the Cybex are beautiful but in S. Texas heat will not help! Should I go with the Gt?

  2. > Works only with Cybex car seats.

    Cybex mount is identical to Maxi-Cosi and Nuna, so this stroller seems to be compatible with their seats as well. :)

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