Towbar Fitting for Electric & Hybrid Cars: What You Need to Know

As more UK drivers embrace cleaner, more efficient motoring, the demand for towbar fitting for electric and hybrid cars has rapidly increased. Whether it’s for towing a small trailer, a caravan, or mounting a cycle carrier, more EV and hybrid owners are discovering that towing with these modern vehicles is not as straightforward as it once was. Before you install a towbar, it’s essential to understand how these vehicles differ, what the manufacturer allows, and why professional fitting is crucial for safety and performance.

If you are considering a towbar installation, contact A&S Towbars Ltd today for expert advice or to book a fitting.

Towbars and How They Work

A towbar is a metal bar securely fitted to a vehicle’s chassis that allows it to tow trailers, caravans, or other loads. It connects to a trailer using a tow ball and typically includes an electrical socket to power the trailer’s lights. Modern towbars come in several styles such as fixed, detachable, or retractable models, each designed to suit specific needs.

For electric and hybrid vehicles, however, towbar fitting is not as simple as it is for petrol or diesel cars. These vehicles have unique engineering that affects how and where a towbar can be mounted, and sometimes, whether towing is permitted at all.

How Electric and Hybrid Vehicles Differ for Towbar Fitting

Electric and hybrid vehicles are designed differently from traditional internal combustion models. Many feature high-voltage battery packs located underneath the car floor, which can interfere with standard towbar mounting points. This means the usual towbar fitting positions may not exist, requiring a custom or vehicle-specific solution.

Additionally, battery weight distribution and aerodynamic design can affect the car’s tow rating (the maximum weight a car can safely tow) and gross train mass (GTM), which includes both the vehicle and trailer weight combined. Some manufacturers even restrict towing altogether to protect the drivetrain or maintain optimal range.

Other key factors to consider include the nose load (the downward pressure on the tow ball) and the wiring kit or dedicated electrics. These ensure that the vehicle’s onboard systems correctly detect and respond to a trailer connection, enabling safety features like trailer stability control and proper lighting integration.

Book your professional fitting with A&S Towbars Ltd today and get expert support from one of the UK’s most trusted towbar specialists.

What You Must Check Before Fitting a Towbar

Fitting a towbar to an electric or hybrid car is not as straightforward as it may seem. Unlike traditional petrol or diesel vehicles, EVs and hybrids have unique designs and electrical systems that demand extra care during installation. Before you commit to a towbar fitting, it’s vital to understand the specific requirements of your vehicle to avoid performance issues, safety risks, or voided warranties.

A well-chosen and properly installed towbar not only enhances your vehicle’s functionality but also ensures you stay compliant with UK regulations. Here’s what you must check before fitting a towbar on your electric or hybrid car.

Manufacturer’s Tow Rating for Your Specific EV or Hybrid

Not every electric or hybrid vehicle is approved for towing. Some models have limited towing capacity, while others are not rated for towing at all. Before making any decisions, refer to your vehicle’s owner manual or manufacturer’s website to confirm:

• Whether your vehicle is homologated (approved) for towing 
• The maximum braked and unbraked towing capacity 
• The maximum nose weight allowed on the towball 
• Any manufacturer notes or restrictions on fitting a towbar 

Failing to follow these specifications can damage the drivetrain or electric system and may invalidate your warranty. For example, while plug-in hybrids such as the Mitsubishi Outlander PHEV are designed for towing, some fully electric models may not be rated at all due to battery placement or cooling requirements.

If in doubt, always consult your vehicle dealer or a professional towbar fitter experienced in working with EVs and hybrids.

Towbar Mount Points and Vehicle Compatibility

EVs and hybrids often have battery packs mounted underneath the vehicle, which can interfere with traditional towbar mounting locations. Therefore, it’s essential to confirm that the towbar is designed specifically for your make and model.

A professional installer will check:

• Whether the mounting points are accessible and free of high-voltage components 
• If any part of the battery or rear structure will be affected 
• The type of towbar (fixed, detachable, or retractable) most compatible with your vehicle’s build 

Installing a vehicle-specific towbar ensures a secure fit without altering the car’s frame or compromising safety. This step also helps maintain the vehicle’s crash protection integrity and performance.

Wiring, Electrics, and Vehicle Coding

Electric and hybrid vehicles use complex electrical systems such as CAN-bus networks, which control everything from lighting to stability systems. Fitting a towbar without the proper wiring integration can lead to serious issues.

A proper towbar fitting will include:

• A dedicated wiring kit designed for your specific vehicle model 
• Integration with the car’s lighting and braking systems 
• Vehicle coding (if required) to ensure the onboard computer recognises the towbar and adjusts driving systems accordingly 

Incorrect or universal wiring kits can cause error messages, interfere with parking sensors, or even disable safety functions like regenerative braking or trailer stability control. This is why professional installation is strongly recommended.

Practical Considerations and Intended Use

Think carefully about what you plan to tow before choosing your towbar. Different uses demand different levels of strength, wiring, and towing capacity.

For example:

• Bike carriers: A detachable towbar may be sufficient and offer a clean look when not in use. 
• Small trailers: Requires a fixed towbar for added strength and stability. 
• Caravans: Demands the highest towing capacity and proper electrical connections for lighting and power supply. 

It’s also worth considering how towing may affect your vehicle’s range and energy consumption, as EVs tend to use more power when pulling heavier loads.

The Fitting Process & What to Expect

If you’re planning to have a towbar fitted to your electric or hybrid vehicle, it’s worth knowing what the process involves. Towbar fitting for EVs and hybrids is a little more complex than for traditional petrol or diesel cars, mainly due to differences in battery placement, wiring systems, and overall vehicle design. By understanding the process and what to expect, you can make sure your installation is smooth, safe, and fully compliant with UK regulations.

Choosing the Right Towbar Type

Before any work begins, your installer will help you choose the most suitable towbar for your specific vehicle model. The most common types are fixed flange, swan neck, and detachable towbars.

• Fixed flange towbars are sturdy and cost-effective, but they remain visible when not in use. 
• Swan neck towbars have a slimmer profile and are often preferred for their sleek look and compatibility with modern parking sensors. 
• Detachable towbars are ideal for electric and hybrid vehicles, as they can be removed when not towing, reducing weight and maintaining aerodynamics. 

For EVs and hybrids, detachable or swan neck styles are usually recommended, as they better accommodate rear sensors and charging access points.

Step-by-Step Towbar Fitting Process

1. Initial Assessment: The process starts with a detailed vehicle inspection. The technician checks the vehicle’s tow rating, battery placement, and underbody layout to identify the best mounting points. 
2. Preparation: Protective coverings are added to safeguard paintwork and components. The correct towbar kit, wiring harness, and vehicle-specific electrics are prepared. 
3. Physical Mounting: The towbar is then securely attached to the chassis using manufacturer-approved fixing points. This step is crucial for ensuring strength and stability. 
4. Wiring and Electrics: For electric and hybrid cars, the wiring process requires extra care. The technician connects the towbar electrics to the vehicle’s control system, ensuring the lights, indicators, and trailer power supply function properly. 
5. Software Coding: Many modern EVs and hybrids need software updates or coding to recognise the new towbar system. This step ensures all driver-assist and safety systems work correctly when towing. 
6. Final Safety Checks: The installer performs a full electrical test and road-safety inspection to confirm everything meets UK towing standards.

Best Practice Use & Maintenance Post-Fitting

After a professional towbar installation on your electric or hybrid vehicle, the next step is proper use and ongoing care. Good maintenance habits not only enhance safety and performance but also protect your vehicle’s warranty and ensure compliance with UK towing laws. 

Using Your Towbar Correctly with an EV or Hybrid

Electric and hybrid vehicles are engineered differently from traditional petrol or diesel cars. Their battery placement, torque delivery, and weight balance can all influence towing performance. To ensure safe and efficient use:

• Know your load limits: Always check your vehicle handbook for the maximum towing weight and nose weight limit. Overloading can cause drivetrain strain and reduce braking stability. 
• Maintain proper weight distribution: Load trailers evenly to keep your car stable, especially during acceleration or cornering. 
• Monitor dynamic behaviour: Instant torque in EVs and hybrids can make towing feel more sensitive. Apply smooth throttle input and gradual braking to prevent sudden movements. 
• Use the correct accessories: Make sure any trailer, caravan, or carrier is compatible with your towbar and equipped with the required lighting connections.

Maintenance Tips for Long-Term Safety and Performance

A towbar is exposed to road debris, rain, and salt—factors that can accelerate wear. Regular inspections ensure continued reliability and compliance. Here’s how to maintain it effectively:

• Check mounting points: Inspect bolts and brackets periodically to ensure they’re tight and free of corrosion. 
• Inspect the electrics: Verify that all wiring and plugs are secure and protected from moisture. Test lights regularly to avoid trailer lighting faults. 
• Clean and lubricate: For detachable towbars, remove and clean the neck when not in use. Apply a light coat of lubricant to moving parts to prevent rust. 
• Avoid leaving detachable necks fitted permanently: Removing them when not needed protects them from weather damage and improves your vehicle’s appearance. 
• Schedule professional checks: Have your towbar inspected annually by a certified fitter—especially before long trips or heavy towing. 

Consistent care extends the lifespan of your towbar, prevents corrosion, and ensures safe operation year-round.

Changing Vehicle, Upgrading, or Stopping Towing

If you sell your vehicle or decide to stop towing, managing your towbar properly will help you preserve its value.

• Vehicle changes: Some towbars can be transferred to another car if they’re compatible. Always confirm fitment and towing limits before refitting. 
• Storage: Keep detachable components in a dry, dust-free environment. A small protective case or cover helps prevent moisture buildup. 
• Software updates: Many modern EVs and hybrids may require re-coding or diagnostic checks after a towbar is removed or reinstalled to ensure systems like rear sensors function correctly. 
• Professional removal: Avoid DIY removal to prevent electrical faults or warranty issues—leave this to trained technicians. 

Proper handling during upgrades or removals ensures continued compliance and safety, even if your towing needs change.

Minimising Impact on EV/Hybrid Range and Efficiency

Towing or carrying extra loads can slightly reduce your vehicle’s range. However, you can minimise this impact by adopting efficient driving habits and thoughtful accessory choices:

• Remove bike racks or carriers when not in use to reduce drag. 
• Keep tyres inflated to the manufacturer’s recommended pressure. 
• Drive smoothly—avoid sudden acceleration and heavy braking. 
• Use regenerative braking wherever possible to recover energy. 
• Opt for lightweight trailers or aerodynamic carriers to maintain efficiency. 

Small adjustments like these can make a noticeable difference in your EV or hybrid’s range and battery health.

Drive with Confidence: Choose A&S Towbars Ltd

Keeping your towbar in great shape means safer journeys and better performance, especially if you drive an electric or hybrid car. At A&S Towbars Ltd, we make it simple with expert towbar fitting and supply, either at your home with our mobile service or right in our welcoming showroom. We offer high-quality brands including Witter, Brink, Oris, PCT, Westfalia, Tow Trust, and Conwys, all professionally installed by our friendly, qualified team. 

Call 0800 211 8076 or 01708 640017, email sales@astowbars.com, or visit www.astowbars.com to book your fitting today.