EV and roof rack: the outdoor sports guide for Belgium

Christophe lives in Brussels. He skis a few weekends a year at La Baraque de Fraiture — Belgium's highest alpine ski area — and kayaks on the Ourthe every summer. When he switched to an EV two years ago, the question came up straight away: is a roof box on an electric car actually worth it? The answer is yes, as long as you know exactly what you're giving up, and on which model you can even mount bars.

How much does a roof box actually affect the range of an electric car?

Empty roof bars mounted to the car reduce range by roughly 5% — around 15 km on 300 km of real-world range. Add a loaded ski box (15–20 kg of gear) and the penalty rises to +14% extra consumption on a mixed-driving cycle, according to a test published by Business AM Belgium. On the motorway at 120 km/h, the loss can reach 25 to 30% — that is the figure L'Argus measured on a Skoda Enyaq Coupé fitted with both a loaded roof box and a bike rack.

The physics are straightforward. At 120 km/h, aerodynamic drag already accounts for 60 to 70% of an EV's total energy use. Any object placed on the roof creates turbulence that forces the motor to work harder. A well-profiled box limits the damage; an open rack loaded with a kayak acts like a wall.

In practice: the Brussels–Hautes Fagnes route (155 km via the E40 and A27) in a Long Range Ioniq 5 (real winter range around 320 km) costs roughly 45 km with bars and a loaded box fitted. The car arrives at Signal de Botrange with around 275 km of range remaining — enough to return to Brussels if you charge for 20 minutes at the Fastned charger in Embourg (A27 exit) on the way home.

What if the bars stay on all week?

This is the most common mistake. Empty bars left on for 10,000 km a year waste approximately 500 km of range — around 80–100 € of electricity for nothing. The simple rule: fit the bars only on days you need them.

Is a tow-bar rear carrier more efficient than a roof box?

Yes, and by a wide margin. A rear carrier on a tow bar adds on average +3% consumption versus +14% for a loaded roof box — five times less impact. Sitting in the car's aerodynamic wake, it barely disturbs airflow.

Sources: Business AM Belgium (roof box test 2025); L'Argus (Skoda Enyaq Coupé test — roof box + bike rack, −30% on motorway).

For skiing at La Baraque de Fraiture, which solution works best?

A ski carrier for two to four pairs of skis weighs 8–12 kg empty. It is quiet, unobtrusive, and leaves the boot fully accessible. For the Brussels–La Baraque de Fraiture trip (~130 km, E411 to A26), the 5–8% range penalty is perfectly manageable. The equation changes on longer journeys: Brussels to the Alps at 120 km/h with a loaded roof box can cost up to 200 km of range over 1,000 km of driving.

For kayaking on the Ourthe, roof rack or trailer?

A plastic kayak weighs 25 to 35 kg. Two kayaks on a roof rack brings you close to the maximum load allowed on most EVs (75–80 kg). Worse, their wide profile (40–80 cm) acts as a frontal barrier in the wind. For the Brussels–Durbuy trip (105 km, Ourthe valley), my clear preference is a lightweight kayak trailer on a tow bar. The range penalty drops to around 10% versus 25% with a loaded roof rack.

"I tested both solutions on the Brussels–Durbuy route. Kayak trailer at 200 kg: 107 km consumed for 105 km driven. Roof rack with two kayaks: the equivalent of 128 km. Over the return trip the difference is more than 40 km of range."

Which EVs take roof bars and what is the maximum load?

The critical point before buying any roof bars: the roof type. A full-glass panoramic roof prevents conventional bar fitting on certain models.

*Specific Thule Evo Clamp or WingBar EVO required for Model Y — confirm compatibility on Thule.be before ordering.

The Tesla Model 3 is the key exception. Its single-pane glass roof does not allow conventional bar mounting — Tesla confirms this in the owner's manual. The only option is a suction-cup system (SeaSucker), which has a 30 kg weight limit. That rules out two kayaks but is sufficient for a single SUP board.

What about glass panoramic roofs on other EVs?

The Tesla Model Y and several other models (Polestar 2, certain Ioniq 6 versions) have largely glazed roofs but retain side insertion rails in the bodywork that allow Thule or Yakima bars to be fitted. Before purchasing any bars, confirm that your exact trim level appears in the Thule.be or Yakima.be configurator — a version mismatch makes the bars useless.

Which electric car is best for outdoor sports in Belgium?

The right choice depends on the activity and how often you do it.

For skiing in the Hautes Fagnes, at La Baraque de Fraiture or Ovifat (Belgium's main alpine ski areas, between 520 and 650 m elevation): any SUV-sized EV with a ski carrier on roof bars works well. The Skoda Enyaq 85 offers the best combination of price and space (585 L boot — plenty of room for four pairs of ski boots). If you want fast charging for back-to-back weekend trips, the Kia EV6 or Ioniq 5 charge at 800 V (10–80% in 18 minutes at a 350 kW charger).

For kayaking on the Ourthe (Durbuy, La Roche-en-Ardenne) or the Lesse: choose a model with an official tow bar. The VW ID.4 Pro (1,200 kg tow rating) pulls a lightweight two-kayak trailer without breaking a sweat; its 543 L boot easily swallows wetsuits and paddles. The Ioniq 5 or EV6 (rated to 1,600 kg) handle a heavier loaded trailer just as comfortably.

For surfing or paddleboarding at the Belgian coast (Knokke, De Panne, Oostende): an inflatable SUP board (2–3 kg) fits into any boot with no bars needed. A rigid board requires bars and security straps. The Tesla Model Y LR (854 L boot) swallows an inflatable board alongside full holiday luggage — and the 105 km Brussels–Knokke journey passes without a single charge stop.

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