If you’re a fan of road trips complete with bikes, kayaks or camping cargo in tow, a roof rack is an indispensable travel essential. If you’re wondering if one will be compatible with an electric car, the good news is that roof racks can be affixed to EVs just like regular cars.
Although using roof racks as cargo boxes on electric vehicles is indeed feasible, some important factors may influence your decision to install a roof rack and the type of rack you choose.
Roof racks can impact an EV’s range
Due to their design and battery placement, EVs have specific weight limitations. Adding a roof rack and cargo can increase the vehicle’s weight, potentially impacting its performance and efficiency. It’s not weight alone which can reduce EV range. Adding a roof rack creates additional drag, which can affect the car’s aerodynamics, meaning it needs more energy to drive.
While there have been no official studies on how much a roof rack impacts EV range, car club members and consumers have reported car efficiency depreciation of anywhere between 3.6% (on a Tesla Model 3) and 13% (on a Volkswagen).
Before installing a roof rack, consult your EV’s manual to determine its maximum roof load capacity.
Not all EVs can have roof racks
Range limitations aside, it’s key to remember that not all electric vehicles may be suitable for roof racks in the first place. Many EVs have sunroofs or panoramic glass roofs, which can limit or prevent the installation of roof racks.
For EVs with low ground clearance, adding a roof rack and cargo can limit your ability to enter spaces with low clearance, such as parking garages and drive-throughs.
Follow these best practices when buying an EV roof rack
- Assess your specific needs for a roof rack and consider what type of cargo you plan to carry, whether it’s bikes, surfboards, tools or general luggage.
- Select a roof rack compatible with your EV model that can carry your cargo and is designed to minimise aerodynamic drag. These racks are typically designed to be sleek and streamline airflow around the vehicle, reducing the impact on range.
- Ensure that your cargo is securely fastened to the roof rack using appropriate tie-downs or straps to avoid drag caused by loose items.
- While driving, be mindful of your EV’s range and energy consumption when using a roof rack. Doing so will help you assess the impact and adjust your driving habits if needed.
- Always remove the roof rack when it’s not in use to maximise range and efficiency.
Summary
- Using a roof rack and/or cargo box will affect your EV’s weight and aerodynamics, which can reduce the range of the car by up to around 13%.
- Not every EV will be roof rack compatible. For instance, those with panoramic glass roofs or low-ground clearance may not be able to have one installed.
- When buying roof racks for your EV, opt for one that’s compatible, aerodynamic and capable of carrying your cargo.
- Always ensure your cargo is safely attached to minimise drag, and keep an eye on your energy consumption during your journey.
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