Electric Cars and Caravans: Weight and Range Explained

Electric cars can tow caravans, but towing significantly reduces your real-world range and demands careful planning around charging stops. Not every EV has a tow rating at all, so checking your manufacturer's specification sheet before you buy is essential. Once you know your car's rated towing capacity and kerbweight, you can work out whether your caravan is a safe match and how to structure a trip around the shorter range you will experience. For help making sure your car is properly equipped for longer journeys, see our guide to portable EV chargers so you always have a backup option.

Does towing a caravan reduce an electric car's range?

Yes, significantly. Towing increases aerodynamic drag and adds rolling resistance from the extra weight, both of which force the motor to work harder and draw more energy from the battery. Most EV owners towing a caravan on a motorway report range reductions that are noticeable, often by a third or more compared with their usual driving. The bigger and boxier the caravan, and the faster you travel, the greater the drag penalty. Slowing down, even modestly, can recover a meaningful portion of that lost range.

How do I know if my electric car can tow a caravan?

Check the manufacturer's specification sheet or your vehicle handbook. Many EVs do carry an official towing capacity, but some, particularly smaller city-focused models, are not rated for towing at all. Fitting a towbar to an unrated vehicle is not the same as having a rated towing capacity and can void your warranty or invalidate your insurance. EV towing capacities are often lower than equivalent diesel models, though larger SUV-type EVs have improved considerably in recent years. Always confirm the figure for your exact model and year rather than relying on general brand reputation.

What is the 85% kerbweight rule and why does it matter?

The Caravan and Motorhome Club recommends that the loaded weight of your caravan should be no more than 85% of your towing vehicle's kerbweight for safe, stable handling. A heavier caravan relative to the car increases the risk of snaking, where the caravan begins to sway and can pull the car off course. Some experienced towers with appropriate equipment operate up to the legal maximum of 100%, but 85% is the broadly accepted safety guidance. Check both your car's kerbweight (in the V5C or handbook) and your caravan's actual laden weight before any trip.

Nose weight: the other figure to check

• Nose weight is the downward force the caravan coupling exerts on the towball.
• UK law limits how much nose weight a trailer may exert; your car's specification will also state its rated nose weight limit.
• Too little nose weight causes the caravan to lift and sway; too much overloads the towball and affects steering.
• Weigh your caravan at a public weighbridge with your packed load before your first trip.

Where can I charge if I cannot park with a caravan at the rapid charger?

This is one of the most practical challenges of EV caravanning. Many rapid charger bays are designed for solo cars, with barriers or tight turning circles that make it impossible to arrive with a caravan still coupled. The usual approach is to unhitch, charge the car, then rehitch before continuing. Look for service areas with large lorry or motorhome parking nearby so unhitching is practical and safe. Some dedicated touring parks and caravan club sites offer EV charging on pitch, which removes much of the motorway charging pressure if you plan site-to-site rather than day-trip style.

How should I plan a caravanning route in an electric car?

Plan more charging stops than you think you need and keep each leg shorter than your towing range estimate. Zap-Map lets you filter by charger speed and connector type and is widely used by UK EV drivers for route planning. Your car's own navigation system, if it has one, may also offer tow-mode route planning. Charge to a higher state of charge before motorway legs than you normally would, and remember that range estimates on the dashboard are calibrated for solo driving, not towing. Treat any displayed range figure as optimistic when you have a caravan attached.

Practical checklist before departure

• Confirm your car's tow rating and that it covers your caravan's loaded weight.
• Verify the 85% kerbweight ratio is met with your actual packed load.
• Check nose weight with a nose weight gauge.
• Plan charging stops using Zap-Map or your manufacturer's trip planner.
• Identify charger bays with space to unhitch if needed.
• Carry a portable EV charger for use at touring sites with a 3-pin or commando socket.

Does driving slower really make a significant difference when towing?

It does. Aerodynamic drag grows with the square of speed, so reducing your motorway pace from 70mph to 60mph can meaningfully lower the drag contribution from the caravan. The battery saving is particularly noticeable on longer, sustained motorway runs. Many EV caravanners deliberately travel at 60mph or below, accepting a longer journey time in exchange for fewer charging stops and more predictable range. This is a trade-off each driver makes based on their schedule and the specific caravan they are towing, rather than a figure that applies uniformly to all combinations.

Frequently asked questions

Can any electric car tow a caravan?

No. A car must have an official manufacturer tow rating before it can legally and safely tow a caravan. Many EVs, particularly smaller or city-focused models, are not rated for towing at all. Always check the specification sheet for your exact model rather than assuming a towbar can be fitted to any car.

How much does towing reduce an electric car's range?

The reduction is typically noticeable, and for many combinations on a motorway it can be a third or more compared with normal driving. The exact figure depends on the caravan's frontal area and weight, your speed, and the weather. Treat any figure as a rough guide and plan more charging stops than you think you need.

What is the 85% rule for caravanning?

The Caravan and Motorhome Club recommends that the laden weight of your caravan should be no more than 85% of your towing vehicle's kerbweight. This is a stability guideline, not a legal maximum, but it is the broadly accepted safe limit for most caravanners and is a sensible starting point when matching a caravan to your EV.

Can I charge at a rapid charger with a caravan attached?

Usually not. Most rapid charger bays have limited space and are designed for solo cars. The practical approach is to unhitch the caravan in a safe nearby area, drive the car to the charger, charge, then return and rehitch. Plan your stops at locations where unhitching is practical, such as large motorway service areas or caravan club sites with EV charging.

Do I need a special cable to charge at a touring site?

It depends on the site's provision. Many touring parks offer standard 3-pin sockets or commando (industrial) sockets on pitch. A portable EV charger that accepts these socket types lets you charge overnight at a modest speed, which is often enough to top up for the next day's leg. Check the site's facilities before arrival and carry the right adaptor for your charger.

Is EV caravanning practical for longer UK touring holidays?

It is becoming more practical as charging infrastructure improves and more EVs receive meaningful tow ratings. The key adjustments are shorter motorway legs, more frequent charging stops, slower cruising speeds, and careful pre-trip route planning. Touring-park charging reduces the pressure on motorway rapid chargers considerably for site-based holidays.

Getting set up properly before your first EV caravanning trip will save you a great deal of stress on the road. Make sure you have the right charging equipment for touring sites by browsing our portable EV chargers, and if you want to understand the charging options available for your specific car, our EV charging cable guide will help you find the right connector type and lead length for every scenario you are likely to encounter.