Highlights based on this e-bike’s specs, comparisons and practical strengths.
100
Excellent battery efficiency
The bike appears to get strong range from its battery size.
The bike appears to get strong range from its battery size.
The calculated range per battery unit is 162.32.
Range is strong despite only average or smaller battery capacity, which supports the efficiency result.
95
Excellent commuting practicality
The folding bike format can be useful for trains, offices, flats and mixed-mode commuting.
The folding bike format can be useful for trains, offices, flats and mixed-mode commuting.
Range is average or better compared with similar e-bikes, which supports commuting practicality.
Charging time is average or better, which is useful for regular commuting.
Built-in lights are not listed, so commuting equipment may need adding.
A removable battery makes home, office or indoor charging easier.
A foldable frame can make storage, train travel and office parking easier.
The display or control unit should make it easier to monitor assist level and battery use.
Hydraulic disc brakes are a strong practical feature for daily riding.
Payload capacity is strong compared with similar e-bikes, which helps with bags, shopping or extra kit.
83
Good storage practicality
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The folding bike format is naturally better suited to storage in flats, offices or cars.
The smaller wheel size should help reduce the bike’s storage footprint.
The removable battery can make storage and indoor charging more flexible.
79
Useful removable battery
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
The folding bike format benefits from removable battery flexibility for storage and transport.
The folding frame and removable battery combination should make storage and transport more flexible.
76
Good braking confidence
Hydraulic disc brakes should provide strong and controlled stopping power.
75
Good range-to-weight balance
Range is above average for this type of e-bike.
Range is above average for this type of e-bike.
The bike weight is average for this type of e-bike.
Battery efficiency appears strong, which supports a better range-to-weight balance.
Range is strong without needing an unusually large battery, which supports efficiency.
The calculated range per kg is 2.87.
The calculated range per battery unit is 162.32.
71
Well-equipped for daily use
The included display or control unit adds useful ride information for daily use.
The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Hydraulic disc brakes are useful equipment for confident daily riding.
A foldable frame adds useful everyday storage and transport flexibility.
Payload capacity is average or better, which helps with bags, shopping or daily kit.
The folding bike format adds practical everyday transport flexibility.
56
Mixed liftability
The bike weight is average for this type of e-bike.
The bike weight is average for this type of e-bike.
The listed weight is 19.5 kg.
The aluminium frame material is a practical lightweight choice for many e-bikes.
The foldable frame can make the bike easier to move through tight spaces or store.
The removable battery can reduce the weight when lifting or moving the bike.
The folding bike format is usually easier to move, store or carry short distances.
The smaller wheel size should make the bike more compact and easier to handle off the bike.
56
Decent rider controls
The included display or control unit should give useful ride information and control.
The included display or control unit should give useful ride information and control.
Torque sensing should improve control by responding to rider effort.
55
Mixed longer-ride suitability
Range is above average for this type of e-bike.
Range is above average for this type of e-bike.
Battery capacity is low compared with similar e-bikes.
Battery efficiency appears strong, which should help stretch range on longer rides.
The removable battery can make charging easier during longer days or multi-stop rides.
Charging time is average for this type of e-bike.
The display or control unit should make it easier to monitor assistance and battery use on longer rides.
Overview
The Brompton Electric G Line is a compact, folding e-bike designed for urban commuters who prioritize convenience and storage. Its 250W motor and 30Nm torque provide smooth support for city riding, though it may feel less punchy when accelerating or climbing steep hills. The bike makes good use of its 345Wh battery, offering a practical range of 56km, and the removable battery adds flexibility for charging and storage. Hydraulic disc brakes offer confident stopping power, while the lightweight aluminum frame and foldable design make it easy to carry and store. However, the relatively low power-to-weight ratio and slower charging time may be considerations for those needing more performance or quicker recharging.
Best For
✓
This folding e-bike should suit riders who need a compact, portable option for urban commuting and mixed-mode travel. Its efficient battery use and strong range for a folding e-bike make it appealing for those prioritising practicality and flexibility in their daily rides. The removable battery and foldable design also make it a good fit for riders who need easy storage and charging convenience. Riders who value a balance between portability and performance will likely find this bike well-suited to their needs.
Who Should Avoid It
×
Riders who prioritize faster charging or larger battery capacity may want to compare similar folding e-bikes, as this model has a relatively slow charge time and a battery that is below average for its category. Riders who need stronger hill-climbing assistance may also find stronger-torque options more suitable. However, the bike still offers good range for a folding e-bike and is well-suited for urban commuting and compact storage needs.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
47
Some maintenance considerations
Weak
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Hydraulic disc brakes are a strong everyday setup, though they may need occasional specialist servicing.
A removable battery makes charging, storage and battery care easier.
Tyres are listed, but there is no clear puncture-protection signal.
The aluminium frame material is practical for everyday use and general maintenance.
83
Good storage practicality
Good
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The folding bike format is naturally better suited to storage in flats, offices or cars.
The smaller wheel size should help reduce the bike’s storage footprint.
The removable battery can make storage and indoor charging more flexible.
56
Mixed liftability
Mixed
The bike weight is average for this type of e-bike.
The bike weight is average for this type of e-bike.
The listed weight is 19.5 kg.
The aluminium frame material is a practical lightweight choice for many e-bikes.
The foldable frame can make the bike easier to move through tight spaces or store.
The removable battery can reduce the weight when lifting or moving the bike.
The folding bike format is usually easier to move, store or carry short distances.
The smaller wheel size should make the bike more compact and easier to handle off the bike.
79
Useful removable battery
Good
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
The folding bike format benefits from removable battery flexibility for storage and transport.
The folding frame and removable battery combination should make storage and transport more flexible.
23
Very slow charging speed
Poor
Charging time is average for this type of e-bike.
Charging time is average for this type of e-bike.
The quoted charging time is long in absolute terms.
100
Excellent battery efficiency
Excellent
The bike appears to get strong range from its battery size.
The bike appears to get strong range from its battery size.
The calculated range per battery unit is 162.32.
Range is strong despite only average or smaller battery capacity, which supports the efficiency result.
71
Well-equipped for daily use
Good
The included display or control unit adds useful ride information for daily use.
The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Hydraulic disc brakes are useful equipment for confident daily riding.
A foldable frame adds useful everyday storage and transport flexibility.
Payload capacity is average or better, which helps with bags, shopping or daily kit.
The folding bike format adds practical everyday transport flexibility.
55
Mixed bad-weather practicality
Mixed
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Hydraulic disc brakes should provide better control and confidence in wet conditions.
Built-in lights are not listed, so bad-weather visibility may depend on extra accessories.
The tyre description suggests useful grip or practicality for mixed and wet conditions.
The folding bike format can still be practical for mixed-mode commuting in poor weather.
The bike weight may help it feel more planted in wet or windy conditions.
Frame material is listed as aluminium, which gives useful durability and maintenance context.
48
Some family utility limitations
Weak
The folding bike format can be practical for storage, but usually has less utility capacity.
The folding bike format can be practical for storage, but usually has less utility capacity.
Payload capacity is above average for this type of e-bike.
The listed maximum payload is practical for lighter utility use.
The listed maximum payload is 130 kg.
Hydraulic disc brakes are useful when carrying children, shopping or heavier loads.
A removable battery makes charging easier around family or utility use.
Range is average or better compared with similar e-bikes, which supports practical daily use.
4 miles more rangeSame power0 Ah more batterySame weightSame gears
No higher-power alternatives found.
Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
0
Limited motor punch
Motor power is below average for this type of e-bike.
Motor power is below average for this type of e-bike.
Torque is below average for this type of e-bike.
Power-to-weight is low.
Torque-sensing assistance should make the motor response feel more natural.
The calculated power-to-weight score is 12.82.
0
Not ideal for steep hills
Torque is below average for this type of e-bike.
Torque is below average for this type of e-bike.
Power-to-weight is low.
Motor power is below average for this type of e-bike.
The torque-sensing assistance should help the bike respond more naturally on climbs.
The calculated power-to-weight score is 12.82.
0
Limited downhill control
No suspension may reduce control and comfort on rough or steeper descents.
No suspension may reduce control and comfort on rough or steeper descents.
Hydraulic disc brakes should provide controlled braking on descents.
0
Not very off-road capable
The folding bike format is usually less suited to rough off-road riding.
The folding bike format is usually less suited to rough off-road riding.
No suspension limits comfort and control on rough off-road terrain.
Hydraulic disc brakes should help with control on loose or uneven terrain.
Torque is low compared with similar e-bikes, which may limit off-road climbing support.
The smaller wheel size is usually less suited to rough off-road terrain.
0
Low power-to-weight ratio
Power-to-weight is low compared with similar e-bikes.
Power-to-weight is low compared with similar e-bikes.
Motor power is below average for this type of e-bike.
The calculated power-to-weight score is 12.82.
0
Limited technical trail control
The folding bike format is usually less suitable for technical trail riding.
The folding bike format is usually less suitable for technical trail riding.
No suspension is a major limitation for technical trail control.
Hydraulic disc brakes should provide the control needed for technical trail riding.
The smaller wheel size is usually less suitable for technical trail control.
Torque is low compared with similar e-bikes, which may limit technical climbing and control.
Torque-sensing assistance should help with smoother control on technical sections.
0
Limited trail control
The folding bike format is usually less suited to trail control.
The folding bike format is usually less suited to trail control.
No suspension may limit control and comfort on rougher trails.
Hydraulic disc brakes should improve control on loose or uneven trails.
The tyre description suggests some suitability for mixed paths and light trails.
The smaller wheel size may feel less controlled on rougher trail surfaces.
Torque is low compared with similar e-bikes, which may limit control on steeper or looser trail sections.
Torque-sensing assistance should help with smoother power control on trails.
2
Limited rough-road comfort
No suspension may make rough roads, potholes and uneven paths feel harsher.
No suspension may make rough roads, potholes and uneven paths feel harsher.
The tyre setup suggests extra cushioning or grip for rougher everyday surfaces.
The smaller wheel size may feel less smooth over potholes and rough surfaces.
Hydraulic disc brakes add useful control on rougher routes.
The bike weight may help it feel more planted over rough surfaces.
Frame material is listed as aluminium, which gives useful comfort and build context.
E-system & battery comparison
Motor Power
250 watts
▼ 38 W below average
Motor Torque
30 Nm
▼ 6.2 Nm below average
Power-to-weight
12.82 W/kg
▼ 1.9 W/kg below average
Battery Capacity
345 Wh
▼ 21 Wh below average
Claimed Max Range
56 miles
▲ 2.7 miles above average
Charge Time
5h
▼ 6.3 mins faster than average
Sensor Type
Torque Sensor
Removable Battery
Yes
Motor Name
Brompton e-Motiq
This folding e-bike offers a legal-style pedal assist that feels more modest compared to some similar e-bikes, making it well-suited for urban riding and short practical journeys. The torque-sensing system should provide a natural and proportional assistance feel, though some similar models may offer more punchy acceleration or stronger support for steeper hills. The motor's efficiency helps deliver a strong range for its size, which is a plus for city riding, and the assistance should remain smooth and predictable in low-speed situations. Riders looking for a lightweight, portable e-bike with reliable support for everyday use may find this motor setup to be a good fit.
This explanation is based on the bike’s motor power, torque, battery capacity, claimed range, charging
time, sensor type and how those figures compare with similar e-bikes in our database.
eBike FAQs
Is this bike suitable for long daily commutes?
This Brompton Electric G Line is well-suited for long daily commutes, especially in urban environments. Its 56-mile range should cover most daily trips, and the removable battery makes charging convenient. The folding design is great for storage and transport, but the motor's lower power and torque may make steep hills or quick acceleration feel less responsive.
How does the motor perform when climbing hills?
The motor provides smooth support for moderate hills, but may struggle with very steep inclines. With 250W of power and 30Nm of torque, it's below average for similar e-bikes, which means you might need to pedal harder on steep grades. However, the torque sensor helps maintain consistent assistance, making it manageable for most urban climbs.
Is the battery efficient enough for regular city use?
The battery efficiency is above average for similar folding e-bikes, which means you should get a good range for regular city use. With a range of 56 miles, it should handle most daily commutes comfortably. However, the battery capacity is below average, so if you need extra range or frequently take longer trips, you may want to consider carrying a spare battery or planning charging stops.
How easy is it to fold and store this bike at home or in an office?
This Brompton Electric G Line folds down to a compact size, making it very convenient for storage in small spaces like offices or homes. The foldable frame design is ideal for users who need to carry the bike on public transport or store it in tight areas. The removable battery also adds to the practicality, as it allows you to charge the battery separately from the bike, which can be helpful if storage space is limited.
Does the bike feel responsive and powerful when accelerating?
The bike provides smooth support for acceleration, but it may feel less punchy compared to similar e-bikes due to its motor power and torque being below average for this type. The torque sensor helps with responsive assistance, but the overall power-to-weight ratio is lower, which may make it feel less powerful when accelerating from a stop or climbing inclines. It should still be adequate for most urban riding scenarios, especially with its efficient battery range.
Is this bike good value for its price of £3,499?
The bike offers strong range efficiency and excellent folding practicality, which are key for city commuters and those needing compact storage. However, the price of £3,499 may feel high compared to similar e-bikes, especially considering its lower battery capacity and motor power. While it excels in portability and daily use, buyers should weigh these tradeoffs against their specific needs and budget.
How practical is it for carrying the bike on public transport?
The Brompton Electric G Line is quite practical for carrying on public transport, thanks to its foldable design, which makes it easier to store in train compartments, buses, or on board. The bike weighs 19.5 kg, which is average for a folding e-bike, so it should be manageable for most people to carry when needed. The removable battery also adds to its convenience, as it allows for easier charging and storage when not in use.
What are the main compromises of this bike compared to similar e-bikes?
This bike offers strong folding practicality and storage benefits, but it has a slightly less powerful motor and torque compared to similar e-bikes, which may affect acceleration and hill climbing. The power-to-weight ratio is also lower than average, which could make it feel less responsive in certain situations. However, the range is efficient for city use, and the removable battery adds convenience for charging and storage.
eBike Overview
eBike Type: Folding Bike
The style of riding intended for this bike
Released:
2024
The bike was released 2 years ago
Screen
Brompton handlebar control
Lights Included
No
Weight (inc battery): 19.5 kg
The website average for electric bikes is
23.93 kg.
This electric bike is 4.44 kg under the average. Total bike weight may vary depending on frame size.
Sizing & Geometry
Min / Max Rider Height
Small: 155–170 cm, Medium: 170–185 cm, Large: 185–198 cm
