The same electric model can deliver up to 300 kilometers more range in urban settings than on motorways, information from recent independent studies. The size of the difference depends on the vehicle and conditions: drivers may notice a large gap between city and highway driving, but it is not a fixed figure for every EV.
This contrast stems from how electric propulsion systems interact with real-world conditions. City driving can be favorable because speeds are lower and repeated deceleration creates opportunities to recover some energy. On motorways, fewer stops mean less energy can be recuperated, while aerodynamic drag rises sharply with speed. The route and vehicle design matter; temperature and driving style shape the result too.
Regenerative Braking: Turning Stops into Power
When an electric car slows down, its traction motor can act as a generator, converting part of the vehicle’s kinetic energy into electricity and returning it to the battery. In stop-and-go city traffic, repeated deceleration creates more opportunities for this recovery than uninterrupted motorway driving. The process is not lossless: as Geotab puts it, “Regeneration is not free energy; it simply recovers a portion of energy that would otherwise be lost as heat.” It can improve efficiency in urban conditions, but it cannot cancel the extra energy required to overcome drag at high speeds.
Low-Speed Aerodynamics: Less Drag, Less Drain
Aerodynamic resistance is another basic factor. Drag force increases approximately with the square of speed, while the power needed to overcome it rises approximately with the cube. That makes sustained high-speed travel especially energy-intensive: at 120 km/h, a vehicle faces substantially more aerodynamic resistance than it does at typical city speeds. At lower speeds, air resistance is a smaller part of the energy demand, helping explain why an EV’s range can fall on long motorway journeys.
Geotab’s analysis, based on anonymized telematics data from more than three million trips, modeled the effect of constant speed on representative EVs in a 30°C scenario. The modeled sedan’s range declined from 277 miles at 50 mph to 251 miles at 60 mph, 226 miles at 70 mph and 200 miles at 80 mph, a reduction of about 28% from 50 to 80 mph. A representative light cargo van fell from 143 miles to 88 miles over the same speed range, a decline of roughly 39%. These are model outputs for representative vehicles, not guaranteed results for a particular model.
Efficiency at Low Speeds
Electric motors convert a high share of the energy supplied to them into motion, and they do not rely on the same engine-speed and gear-change patterns as many combustion vehicles. That can help EVs use energy efficiently in urban traffic. But overall consumption also depends on the vehicle’s size and shape, as well as its tires and payload. Road gradient and battery temperature matter too, along with the use of heating or air conditioning. Lower speed alone does not guarantee lower consumption in every city journey.
No Idling Losses
When an EV is stationary, its motor does not need to keep running to maintain an idle. The car can still draw electricity for systems such as climate control and lighting, as well as infotainment, so stationary consumption is not zero. A combustion engine that remains running at a standstill continues to use fuel, which can make congestion an additional source of energy loss.
Instant Torque and Smooth Acceleration
Electric motors provide strong torque from low speeds and do not need conventional multi-gear shifts to build speed. This can make urban driving smooth, but rapid acceleration still consumes energy. A driver who frequently accelerates hard may offset some of the efficiency advantage of low-speed travel; smoother acceleration and regenerative deceleration help preserve it.
Highway Driving: Where Efficiency Drops
At constant high speeds, opportunities for regenerative braking are rare, and the motor must continuously overcome rolling resistance and aerodynamic drag. As Geotab’s analysis notes, “At motorway speeds, aerodynamic drag becomes a major energy cost.” Fewer stops may make highway driving more efficient for a combustion vehicle, but for an EV the increasing aerodynamic load can outweigh the benefit of avoiding repeated acceleration.
Official efficiency labels distinguish city and highway performance, but they are not the same as a constant-speed motorway endurance test. Independent tests also use different routes and conditions. Edmunds’ EV range test, for example, uses a route made up of 60% city and 40% highway driving and averages about 40 mph. It keeps speeds within 5 mph of posted limits, with climate control set to 72°F. In its test of the Mercedes-Benz GLC 400 4Matic Electric, the vehicle covered 392 miles and used 28.4 kWh per 100 miles, compared with an EPA consumption estimate of 33 kWh per 100 miles. For more on how specific models perform in real conditions, see this review of the Mercedes GLC 400 EQ 4Matic's long-distance travel credentials: how the Mercedes GLC 400 EQ 4Matic redefines long-distance electric travel.
Context and Practical Takeaways
For drivers considering an electric vehicle, the distinction between laboratory ratings and mixed-route tests matters, as does sustained high-speed driving. Urban conditions can be comparatively favorable because of lower aerodynamic drag and opportunities for regenerative braking, while sustained motorway speeds commonly reduce range. The gap varies with the model and speed, while weather and the test protocol also matter. Temperature extremes and wind can affect consumption; so can elevation and tire pressure. Cabin heating or cooling has an impact too. Drivers planning long trips should so base charging stops on the vehicle’s likely motorway performance rather than assuming its advertised range will remain constant. As charging infrastructure continues to expand across Spain and Europe, the practical advantages of electric cars in city environments are likely to become even more pronounced.
