Testing the effect of different speeds on fuel efficiency using a Rivian R1T: Reducing speed from 65 to 60 MPH boosted range efficiency by 0.5 miles per kilowatt-hour.
Reducing Speed for Maximizing Range in Electric Vehicles
Not every tip for maximizing range fits every lifestyle, but understanding your options means you can make smarter choices when it really matters. A recent test by Gregg Poss, a Rivian R1T owner, demonstrated that reducing speed can significantly improve efficiency and range in electric vehicles (EVs).
Gregg's test took place on a flat, long stretch of road in North Dakota. By slowing down from 65 mph to 60 mph, he managed to increase his vehicle's efficiency from 2.12 to 2.61 miles per kilowatt-hour (mi/kWh), a 23% improvement. This small change in speed resulted in a noticeable boost in energy savings, potentially saving a full charging stop on longer drives.
This experiment under real-world conditions highlights the impact of conscious driving on EV range. Slower speeds help reduce wind drag and stress on tires, which in turn reduces wear and heat buildup. These factors contribute to a longer battery life and increased efficiency.
Moreover, this example underscores the importance of active participation in the EV experience for range optimization. As EV ownership requires learning and attention to various factors, such as battery management and speed habits, drivers who engage actively with their vehicles have more control over the driving experience.
In the future, EVs may incorporate speed-limiting technologies that optimize efficiency automatically, ensuring extended range by managing driving speed based on various factors, like speed limits and location.
It's worth noting that driving in Conserve mode, which disables the rear motors in the quad-motor setup, could add an additional 8% range. Switching to Conserve mode on a quad-motor Rivian can add a substantial amount of range by reducing the power draw from all four wheels.
However, not everyone may be willing to reduce speed for the sake of range. Jennifer Haley, for instance, expressed her unwillingness due to her average highway speed of 85 mph, stating that her range will always be lower as a result.
The importance of safety, conscious driving, and managing range in electric truck ownership is further emphasized by the high level of safety demonstrated by Rivian's 2022 R1T in a driver's side T-bone crash. The vehicle's safety engineering ensured that the driver walked away uninjured.
In conclusion, reducing speed in electric vehicles can lead to significant improvements in efficiency and range. This test serves as a reminder that range isn't just about battery size, but also about how you drive. As EVs become more prevalent, understanding the factors that influence range will be essential for making the most of your electric vehicle.
[1] For more insights into the EV landscape, follow automotive journalist Aram Krajekian on X and LinkedIn for daily news coverage about cars.
Images for this article were sourced from the "RIVIAN Electric Vehicles Discussion" public Facebook group.
Slowing down from higher speeds to a more conservative rate, such as from 65 mph to 60 mph, can demonstrate a meaningful enhancement in efficiency and range for electric vehicles (EVs). This lifestyle choice, coupled with the growing adoption of electric-vehicles technology, is expected to become increasingly significant as more drivers embrace the benefits of longer driving ranges.
As electric-vehicles improve and technology advances, potential innovations include speed-limiting features that automatically optimize driving efficiency based on factors like location and speed limits, thereby providing extended range for electric vehicles.
