Folding electric bikes: The definitive guide

Key takeaways

• Folding e-bikes take up very little space when folded, so they're great on public transport or if you just don't have much storage space at home.

• With small wheels, folders are usually agile but the ride isn't as comfortable as a full-size e-bike - you'll feel the bumps!

• The extra complexity of a folding frame means that folders tend to be more expensive and heavier than similar rigid models.

Table of contents

What is a folding e-bike?

As the name suggests, a folding e-bike is an electric bike that collapses down to a more compact form when not being ridden. The best folding electric bikes combine the ridability and performance of a “full size” bike in a package that folds down to the size of a suitcase (or smaller), but there are inevitable compromises to be made. There’s a fundamental tension between having a similar ride feel to a conventional e-bike and the desire for a really compact fold.

Frame and folding mechanism

This is clearly an important part of your buying decision. There are lots of ways to design a folding bike, from a relatively simple sideways-hinged frame up to complex multi-way folds. Broadly speaking, the more elaborate the fold the more compact the e-bike will become when folded. The trade-off is that a really compact fold demands very small wheels (16in is a common size) and often a riding experience that's either agile or nervous depending on your confidence and familiarity. Small wheels don't ride over bumps that well. Bigger wheels give a more comfortable and controllable ride but at the expense of a bulkier package when folded.

As a result, it's really important to think about your needs and the use to which you're putting the bike. For example, if you're planning a mixed-mode commute such as riding to the nearby station, taking your bike on the train and then riding across town to work (and perhaps stashing your bike under a desk for safekeeping), then a compact fold is likely to be your prime consideration. You need an e-bike that takes up as little space as possible on the train and at your workplace.

You may want a folding bike simply because you don't have much space to keep an e-bike at home, in which case you may find that you don't need much of a fold at all. Folding handlebars and pedals take a lot of the width out of a bike, allowing it to take up much less space in a corridor or hallway. For this situation, you can look for a bike with 20 or even 24in wheels - if a super-compact fold isn't the main priority, you can choose a bike where the ride experience takes precedence over the fold.

Folding e-bikes are particularly popular with motorhome owners. Having parked a motorhome on site, a couple of e-bikes are perfect for easily popping into town for supplies or to nearby attractions that might be difficult to access in a large vehicle. Often a bike ride is an end in itself, too. While there's always the option of fitting a rack and carrying full-size e-bikes, many motorhomes have rear garages that allow bikes to be hidden away out of sight and behind locked doors. Folding bikes are brilliant for this. Again, you need to think about that trade-off between compact fold and ride performance. If you're short of carrying space and you're looking mainly for an errand-runner, look for the most compact fold possible. If you're looking to do recreational rides on perhaps unsurfaced cycle paths then a bigger-wheeled folder will cope admirably while still taking up a lot less space in the van than a full-size bike.

Motor

Most folding e-bikes use either front or rear hub motors. While there are folders out there built around a mid-drive motor, it's a much trickier design task. The key attraction of folding bikes is that they take up less space, so generally have small wheels and frame. That means there's not much space for a motor and battery - putting the motor in one of the wheels doesn't use any of that valuable room, allowing for a compact fold and a reasonably-sized battery.

While rear hub motors are generally more effective than front hub motors, it's not such a big deal on a small-wheeled folding bike. They tend not to be loaded up with luggage and ridden up steep hills, so the problems of wheel slip sometimes faced by front hub motors aren't usually much of an issue. The natural habitat of a folding bike is relatively flat city streets. If you're looking for a folder because it takes up less space in a motorhome, though, and you think you might venture onto unsurfaced paths, a rear motor is well worth looking for.

Don't expect mountains of torque from a folding e-bike motor. The guiding design principles here are small size and keeping to a reasonable weight so that you can lift the bike on to a train or up a flight of stairs. Again, on the fairly flat terrain that folding bikes tend to be used on, a high-torque motor isn't really a necessity.

Find out more at our guide to e-bike motors.

Battery and range

As with motors, the challenges with batteries on a folding e-bike are space and volume. The larger the battery capacity the further you can go between charges, but a larger capacity inevitably means a physically bigger (and heavier) battery. Finding a space for it while still allowing a compact fold is a real design challenge.

Many folding e-bikes have a battery mounted on the frame somewhere, sometimes taking advantage of the typically small wheels to tuck the battery down in front of the rear wheel. Some bikes will have a battery mounted at the front on the bars, getting it out of the way of the folding frame entirely. You'll also find some cunning solutions like integrating the battery into the seatpost (the tube that the saddle is mounted to) - with their small frames, folding e-bikes usually have really long seatposts, and if they're long they need to be relatively large diameter so they don't flex too much, at which point you've got a load of effectively free volume to put a battery into.

Exactly where the battery is probably isn't a key consideration when choosing a folding e-bike as it's always going to be secondary to effective folding. Bear in mind that you're unlikely to get a battery of comparable capacity (and hence range) to a full-size, non-folding e-bike. You're looking at typically around 350Wh compared to 500 or upwards for a conventional bike. Again, that's not necessarily a huge drawback, as you're less likely to want to cover substantial distances on a small-wheeled folder anyway.

That said, it's important to check that the range any e-bike you're looking at matches up with your expected use. This isn't always straightforward as claimed ranges vary enormously (and real-world ones more still), so be generous with your estimates of desired range and conservative with manufacturers' claimed numbers.

A key point to look for is a readily removable (but also secure) battery. As one of the heaviest single components, it's often useful to be able to detach it, especially for things like lifting the bike into a motorhome or car boot. It's also handy to be able to charge the battery somewhere away from the bike itself.

Find out more in our guide to e-bike batteries.

Additional features

• Mudguards: Generally folding e-bikes aren't the kind of bike that you get changed to ride. For most commuting and utility purposes you just want to jump on in whatever you happen to be wearing and head off. Mudguards do a remarkable job of keeping you free of spatter and are pretty much essential for any practical e-bike (folding or otherwise). Most folding bikes include mudguards as standard.
• Lights: In the UK it's a legal requirement to display front and rear lights during the hours of darkness, and even in daylight they're valuable. Given that an e-bike has a big battery in it already, it makes sense to look for integrated lights that are powered from the main battery so you only have one thing to keep charged. Integrated lights are usually in the "be seen" rather than the "see by" category so if you're likely to venture onto unlit routes after dark we'd recommend budgeting for a more potent additional headlamp too.
• Locks: Integrated locks are an increasingly popular feature of all kinds of utility e-bike, although far from universal on folders. They're somewhat useful in preventing an opportunist from just riding away on your e-bike, but realistically you're going to also need a decent cable or shackle lock to actually secure your bike to something immovable.
• Racks: Think about how much (if any) luggage you anticipate carrying. The small size of folding e-bikes means they're not the best beasts of burden, but most will handle a few bits of shopping or a laptop. Built-in racks are a common but not universal standard feature, while many manufacturers have a range of additional racks or custom luggage too.
• Kickstand: A kickstand saves you having to lean your e-bike up against something when parked. Given the weight of a folding e-bike they do need to be suitably sturdy, though.

Choosing the right folding e-bike

When delving into the realm of folding electric bikes, it's crucial to align your choice with your intended riding style. Whether you are a daily commuter, a leisure rider, or an off-road enthusiast, the first step is to consider the primary purpose of the bike. Are you navigating city streets, exploring rugged terrains, or seeking a blend of both? This initial assessment will guide you towards selecting the most suitable folding electric bike.

Furthermore, the terrain you plan to conquer plays a pivotal role in determining the bike's design. Will you be traversing smooth city pavements, bumpy trails, or steep inclines? Understanding the nature of your rides will help you decide if you need bigger wheels and possibly suspension, or if you can get away with super-small wheels.

Budget considerations should never be overlooked when investing in a folding electric bike. Seek out options that offer a balance of affordability and quality. Look for bikes equipped with top-notch components and a dependable electric motor to ensure a seamless riding experience without breaking the bank.

Battery life and range are essential factors to contemplate as well. Evaluate your daily riding needs and choose a folding electric bike with a battery that can sustain your journeys. Additionally, consider the charging time required to replenish the battery, ensuring that it aligns with your lifestyle and schedule.

Lastly, the practicality of the bike cannot be ignored. Assess the weight and portability of the folding electric bike, especially if you plan to store it in a car trunk or transport it on public transit. Opt for a model that strikes a balance between performance and convenience in terms of portability.

If a folding e-bike isn't what you need, explore our guide to e-bike types to find an electric bike that meets your requirements.

Using folding e-bikes for commuting

Folding electric bikes are perfect for commuters as they offer the freedom to travel seamlessly between different modes of transport. They can be taken on trains without hassle, providing a flexible and efficient way to complete your journey. The lightweight and portable nature of these bikes make them an excellent choice for those looking to combine cycling with other forms of transport.

When selecting a folding electric bike, it's important to consider where you can safely store it at your workplace. Assess the available space and ensure that the bike's compact size when folded fits within the designated storage area. This precaution not only safeguards your investment but also guarantees convenience and accessibility during your daily commute. By being mindful of storage options, you can enjoy the full benefits of your folding electric bike without any hassle.

Practicalities of owning a folding e-bike

When considering a folding electric bike, it's essential to think about how small the bike becomes when folded and whether it suits your storage needs. The compactness of a folding electric bike can significantly impact its convenience, especially if you have limited space at home, in the office, or when traveling. A well-designed folding mechanism ensures that the bike can be easily stored in tight spaces, such as a car boot, under a desk, or in a small apartment, without compromising on functionality or performance.

Additionally, charging your e-bike while folded is generally safe, but it's important to ensure that the battery and electrical components are not obstructed or damaged during the process. It's advisable to follow the manufacturer's guidelines on charging to maintain the longevity and efficiency of the battery. Furthermore, consider the location of charging ports and how accessible they are when the bike is folded. This attention to detail can enhance the overall convenience of owning a folding electric bike, allowing you to effortlessly integrate it into your daily routine without any unnecessary hassle.

Advantages of folding electric bikes

Folding electric bikes offer an impressive level of flexibility and convenience, making them ideal for various commuting needs. Here are some key advantages:

• Compact Storage: Easily fold and store the bike in small spaces, such as a car boot or under a desk at work.

• Transportability: The compact design allows for seamless transport on trains and other forms of public transport.

• Urban Navigation: Perfect for navigating crowded city streets, offering the freedom to switch between cycling and other modes of transport.

• Space Efficiency: Ideal for those with limited storage space at home or in the office, ensuring the bike fits comfortably without taking up excessive room.

• Versatility: Suitable for combining cycling with other forms of travel, enhancing the overall commuting experience.

These features make folding electric bikes a practical choice for those seeking a flexible and efficient way to travel.

Disadvantages of folding electric bikes

Despite their many benefits, folding electric bikes do have some drawbacks. Here are some of the disadvantages to consider:

• Weight: Folding electric bikes can be heavier than traditional bikes, making them less convenient for carrying over long distances when folded.

• Stability: The folding mechanism might sometimes compromise the bike's stability and ride quality, affecting the overall riding experience.

• Cost: These bikes can be more expensive due to the added technology and folding components.

• Maintenance: The complex folding mechanisms may require more maintenance and care than standard bikes.

• Limited Performance: While suitable for urban commuting, they may not perform as well on rough terrains compared to non-folding e-bikes.

Budget and price

Folding electric bikes tend to be more expensive than both non-folding electric bikes and conventional folding bikes. That’s due to the added complexity involved. You’ll need to pay a little more for a similar level of equipment compared to other bike types.

Under £1,000

There are some decent folding e-bikes at under £1,000 but tread carefully. It’s very difficult for manufacturers to deliver a well-engineered frame, a decent motor/battery system and good quality components for a sub-£1,000 retail price. So something will have to give. In particular, look out for rim brakes (with brake pads working on the wheel rim itself rather than on a separate braking disc), lower-grade aluminium or steel frames that add weight, less elaborate folding mechanisms and unbranded motors or other components.

Around £1,500

If £1,000 is a bit of a gamble, the £1,500 area is very much a safe bet. You’ll definitely expect to see a quality hub motor, a good transmission system from a reputable brand like Shimano and effective disc brakes. You won’t see top of the line kit but everything will work reasonably well.

£3,000 and up

You shouldn’t expect any compromises at the upper price ranges but you can expect design flair and/or handmade quality. Mid-drive motors or highly-integrated hub motors will make an appearance. Bikes will be lighter thanks to aluminium or carbon fibre frames. Folding mechanisms will be sophisticated. And extra features like lights will be neatly integrated into the design.

Example folding electric bikes

When searching for the perfect folding electric bike, it's vital to consider both the quality of the bike and the reputation of the supplier. Here are three well-known UK folding e-bike suppliers, each offering unique advantages.

Renowned for its iconic folding design, Brompton is a staple in the folding bike industry. Brompton bikes are known for their compactness and durability, making them a favourite among urban commuters. The Electric P Line Explore is the flagship model in Brompton's electric range, with a 250W front hub motor and a 12 speed hub gear at the back. This model is celebrated for its ease of folding, allowing it to be conveniently stored or carried on public transport.

Brompton Electric P Line Explore £4,099 *

Gocycle is celebrated for its innovative design and lightweight construction. Its folding electric bikes are engineered for performance and portability. Usefully, all the moving parts are tucked away inside the frame, so there's no exposed chain or brakes, keeping everything clean. Concealed within the futuristic aluminium and carbon fibre frame is a removable 375Wh battery that powers GoCycle's own G4Drive motor integrated into the carbon fibre single-sided fork. The G4i also comes with mudguards and integrated lights. There's even a USB charger on the bars.

Want even more zip? There's also the G4i+ with more carbon fibre, including the wheels.

GoCycle G4i, £3,999

Tern is recognised for producing versatile and high-quality folding bikes that cater to a variety of needs. The Tern Vektron stands out with its robust build and powerful Bosch motor, offering an impressive range and smooth ride. This model is perfect for those seeking a reliable folding electric bike that can handle longer commutes and varied terrains.

Tern Vektron S10, £3,900

Our folding electric bike recommendations

Read our buyer's guide to folding electric bikes to discover the perfect folding e-bike for your needs and budget. We've got recommendations for all riders and price points.

Frequently Asked Questions

How much should I expect to spend on a folding e-bike?

While the bikes we've highlighted here are at the upper end of the market, there are more affordable options. Approach very cheap folding electric bikes with caution, though. The added complexity of a folding frame makes them harder to manufacture than a rigid frame, so you'd expect them to cost a bit more. Plus you've got the motor and battery system to fit into the budget. It's hard for manufacturers to get suitably durable and effective components like gears and brakes on to a folding e-bike for much under £1,000, but look for offers and reductions.

How heavy is a folding e-bike?

It varies a lot. Typical high end bikes from Brompton or GoCycle are in the 17-18kg (38-40lb) range. ADO's Air Carbon has a claimed weight of just 14.5kg (32lb). The lightest we know of at the moment is the titanium Vello Bike+ with a claimed weight of under 13kg (29lb). However, budget bikes with hi-tensile steel frames and entry-level components can easily be 23kg (50lb). For context, that's the usual maximum weight for hold baggage on flights, which probably isn't something you'd want to be carrying up and down a flight of stairs daily.

How easy are folding electric bikes to fold?

There's usually a trade-off here between ease of folding and how small the resulting package is. A simple hinged frame is pretty easy to fold but doesn't get that compact (although generally small enough to get out of the way in a hallway). The most compact folders tend to have a slightly more involved process but as a result can fit in luggage racks or small car boots easily. The iconic Brompton has a neat multi-stage fold so you can do a quick-but-big step if that's enough, or take a few extra moments to pack it all the way down.

Summary

Unassisted folding bikes have long been popular for their convenience, especially for commuters. Adding a motor makes them even better. Effortlessly ride from home to the station, fold your bike, get on a train and then use your electric folder for the last bit of the journey. And when you get home, stash the bike away in a corner. With their compact design, powerful electric motors, and high-quality components, folding e-bikes are the perfect companions for today's dynamic lifestyles.

As you consider investing in a folding electric bike, reflect on your personal needs and preferences. Choose a model that aligns with your lifestyle, ensuring it offers the right balance of power, portability, and style to suit your daily adventures.

When choosing a folding electric bike, it's crucial to prioritise models with a sturdy frame and top-tier components. Features like disc brakes for dependable stopping power and a comfortable saddle for improved riding comfort should be on your checklist.

Accessories can significantly enhance your riding experience, so consider folding electric bikes that come equipped with a rack or additional features like safety lights. These extras can boost both the functionality and safety of your rides.

The design and portability of the folding electric bike are key. Ensure that the bike's foldable mechanism is user-friendly and that it can be easily stored and transported when folded. Convenience should be a primary factor in your decision-making process.

Explore the specifics of the electric motor and battery of the folding electric bike. Confirm that the motor provides ample power for your riding needs and that the battery offers sufficient range to support your daily adventures.

To make an informed choice, review and compare various models to identify the best folding electric bike that aligns with your budget constraints and riding preferences.