Bike Rack for Car: How to Carry an Electric Bike Safely in the UK

A bike rack for your car sounds simple until you put an electric bike on it. E-bikes weigh more than acoustic bikes, often 20 to 25 kilograms once the battery is in, and that extra mass changes which racks are suitable, how you load them, and what your car can legally and safely carry.

This guide walks through the three main rack types sold in the UK, the weight limits that matter, the rules on number plates and lights that catch drivers out, and a genuinely easier alternative for some riders: a folding electric bike that skips the rack altogether.

A typical non-electric hybrid bike weighs 12 to 15 kilograms. Budget bike racks are engineered with that in mind. An electric bike with a motor and battery usually lands between 20 and 25 kilograms, and cargo models go well beyond that. The EMotorad Cargo G1, for example, is built to haul loads, and its own weight reflects that.

Check three numbers before buying any rack:

• Rack rating: the maximum total weight the rack itself is certified to carry
• Per-bike rail rating: some towbar racks rate each channel separately, commonly 20 to 30 kilograms
• Car limit: nose weight for towbar racks, or roof load limit for roof racks

Exceeding any of these is not just a warranty issue. An overloaded rack can flex, work loose, or fail on the motorway, with a 20-plus kilogram bike behind it.

Towbar racks clamp onto the tow ball and carry bikes on rails behind the car. They are the default recommendation for electric bikes, for three reasons:

• Load height: you lift the bike to knee level instead of above your head
• Weight capacity: most towbar platforms handle 45 to 60 kilograms total across two or three bikes
• Stability: the load sits low and close to the car

The catches are cost and hardware. You need a towbar fitted, which runs a few hundred pounds if your car does not have one, and decent towbar racks start around the same again. Platform-style racks that support the wheels are far kinder to e-bikes than hanging racks that suspend frames from the top tube.

Boot racks strap to the tailgate with hooks and webbing. They are the cheapest option and fit most hatchbacks and saloons without extra hardware.

For e-bikes they are a compromise. Most boot racks max out at 15 to 18 kilograms per bike, which rules out many electric bikes entirely. The straps also concentrate load on the tailgate panel, and heavy bikes stress both the panel and the rack's hooks. If your e-bike's actual weight, battery removed, falls within the rack's per-bike rating and your tailgate can take the load, a quality boot rack can work for occasional trips. Weigh your bike first, and check both the rack manual and your car's handbook. Daily transport calls for something stronger.

Roof racks keep the rear of the car clear and the number plate visible, which removes a legal headache we will cover shortly. They suit lighter bikes and drivers who already own roof bars.

The problem is physics: lifting a 20-plus kilogram e-bike overhead is awkward and risky, for your back and for the car's paintwork. Car roof load limits, typically 50 to 75 kilograms including the bars themselves, also leave little margin for two e-bikes. Tall riders manage this more easily, and a small step stool helps everyone else, though many e-bike owners try a roof rack once and switch to a towbar platform.

This is where drivers get fined, so read it carefully.

UK law requires your number plate and rear lights to be visible and working at all times. Under the Road Vehicles Lighting Regulations 1989, position lamps and the rear registration plate lamp must be kept lit and unobscured when required. A boot or towbar rack loaded with bikes blocks both in most configurations.

The legal fix is a lighting board: a board carrying a duplicate number plate and working rear lights that mounts on the rack and plugs into your car's 12N or 13-pin towing socket. Without it, you can be stopped and fined, and your insurance position after a rear-end collision gets complicated.

Practical points:

• Order the duplicate plate from a registered plate supplier with your V5C and ID, the same as any legal plate
• Test every light on the board before each trip, since board wiring takes a beating from weather
• Bikes must not project beyond the sides of the car in a way that creates danger, so position the widest bike carefully
• Check straps and clamps at the first fuel stop; racks settle in the first miles of a journey

A few minutes of prep protects the bike and makes the rack's job easier.

Remove the battery first where your model allows. On EMotorad's UK range, the EMX (36V 13Ah), the Veloa (48V 12.8Ah) and the Cargo G1 (dual 48V 10.2Ah) have removable batteries per their product pages; check your own model's manual if it is not one of these. Taking the battery off drops a couple of kilograms from the load, protects it from vibration and rain, and removes the temptation for opportunistic theft at service stations.

Other steps worth the effort:

• Take off displays, lights and bags that could vibrate loose
• Pad contact points where the rack clamps the frame
• Point the heaviest bike closest to the car on multi-bike racks
• Use the frame's main triangle for straps, avoiding cables and wiring runs

A loaded rack changes how the car behaves, and a few habits keep every trip uneventful.

Before setting off, do a full pull test: grab the bike by the frame and rock it hard in every direction. Any play at the clamp, the straps, or the towball mount gets fixed on the driveway, not at 70 miles per hour. Recheck at your first stop, because straps and clamps settle as the load vibrates into place.

On the road, the extra weight behind or above the car lengthens braking distances and softens cornering. Leave a bigger gap in wet weather, take roundabouts a touch slower, and remember the height you have added with a roof rack before pulling into car parks or drive-through lanes. Many a bike has met a height barrier its driver forgot about.

For longer motorway runs, a quick walk-around at every service stop takes thirty seconds: straps tight, lights working if a board is fitted, wheels still seated in their rails. E-bike wheels are heavier and put more load on wheel straps than standard bikes, so those straps deserve the closest look.

Two quiet risks catch people out on journeys.

The first is insurance. Some car policies treat a bike rack as a modification or exclude items carried on it, and some bike insurance excludes theft from vehicles. A five-minute call or policy check before a holiday tells you where you stand, and photos of the loaded rack help if you ever need to claim.

The second is security at stops. A bike on a rack is on display, and e-bikes attract attention. At service stations, park where you can see the car, keep stops short, and run a cable lock through the bikes and the rack itself for anything longer than a coffee. The battery and display should already be inside the car with you, since you removed them before loading.

Couples and families regularly need two e-bikes on one car, and this is where the numbers get tight. Two 22-kilogram bikes plus a 20-kilogram rack total around 64 kilograms pressing down on the towball. That fits within the nose weight limit of many cars, but by no means all: some vehicles cap nose weight at 50 kilograms, which this load would exceed. On a roof it typically passes the limit, and on a boot rack it is firmly in no territory.

For two-bike duty, a towbar platform is the practical answer when the numbers line up: the rack's payload rating must cover the combined weight of both bikes, and the car's towball nose weight limit in the handbook must cover the bikes plus the rack's own weight. Check both figures before ordering, since some cars cap nose weight at 50 kilograms and would leave no margin for this setup.

There is a way to skip racks entirely. A folding electric bike goes in the boot, properly secured so it cannot shift under braking, which means no lighting board, no towbar, no roof lifting, and no worrying about the rack on a wet motorway.

The EMotorad Veloa at £999 is a folding fat-tyre e-bike on 20-inch wheels, built to ride like a full-size bike once unfolded. With the battery removed it is designed to travel in a car boot; check the folded dimensions against your own boot before relying on the fit, and secure the bike so it cannot move in a sudden stop. For riders who transport their bike a few times a month, the maths is simple: the rack, towbar and lighting board you never buy can pay for a meaningful slice of the bike itself.

Folding is also the answer for mixed journeys. Drive to a point near the city edge, park somewhere you are allowed to leave the car, unfold, and ride the last miles in. Check the current ULEZ rules and any parking restrictions for your own route before you rely on this plan.

Match the setup to how often and how far you transport the bike:

• Occasional trips, one lighter e-bike: a quality boot rack, battery removed, can work within its weight rating
• Regular trips, one or two e-bikes: a towbar platform rack is a common choice for frequent use, provided the rack and bikes stay within your car's nose weight limit
• Already own roof bars, fit and strong: a roof rack works, with honest respect for the lifting involved
• No towbar, no desire for one: a folding e-bike like the Veloa may avoid the rack question if it fits your boot, so confirm the folded size first

Whatever you choose, weigh your actual bike before trusting a rack's brochure rating, and budget for the lighting board when the rack sits behind the car.

Only if the rack's per-bike weight rating exceeds your e-bike's actual weight. Some standard racks are rated for lighter conventional bikes, and electric bikes are often heavier. Check the rating plate on the rack and weigh your bike first.

If the rack or bikes obscure your number plate or rear lights, yes. UK regulations require the plate lamp and position lamps to be lit and unobscured, and the practical solution is a board with a duplicate plate wired into the car.

Removing it is safer and smarter where your model allows. It cuts weight on the rack, protects the battery from vibration and weather, and reduces theft risk when you stop. EMotorad's UK EMX, Veloa and Cargo G1 have removable batteries per their product pages.

Towbar nose weight limits vary by car, and the rack plus bikes must stay under yours. Your car's handbook lists the figure, and the rack manufacturer lists the rack's own weight so you can do the sum.

The Veloa folds around its 20-inch wheels for car boot transport. Measure your boot opening and confirm the folded dimensions with EMotorad before assuming a fit, and secure the folded bike against movement.

Carrying an electric bike by car gets simpler once you respect the weight. Pick a rack rated for your real bike, fit a lighting board when the plate disappears behind it, and take the battery off where your model allows it. If racks feel like more hassle than they are worth, the folding Veloa at £999, prices checked 17 October 2026 and subject to change, may turn the problem into a boot-sized one if the folded bike fits your car. Measure the boot first, weigh the bike, and compare both with the dimensions listed on the product page. Browse the UK range at https://www.emotorad.com/uk/shop and book a test ride at https://www.emotorad.com/uk/book-test-ride to try the fold yourself.