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Tesla Model 3 takes on World War II-era trailer in range efficiency towing test

Credit: YouTube | Teslanomics with Ben Sullins

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A video showing a Tesla Model 3 towing a 550-pound trailer recently provided a glimpse at how real world range is affected when the all-electric sedan pulls heavy items.

The real-world Model 3 towing test was conducted by Ben Sullins of the Teslanomics YouTube channel. Ben’s channel is known for reviews and lifestyle videos with electric vehicles, and this time he decided to clarify the many questions EV owners have about the real-world effect on range when towing with the Model 3.

Sullins’ Tesla Model 3 is officially rated with 325 miles of range, but his real-world average efficiency of about 78% usually meant that his vehicle is only able to travel about 253 miles per charge. It is essential to keep in mind that the range of an electric vehicle depends on several variables, including driving style, weather, climate control within the vehicle’s cabin, and weight inside the car. When more features of the vehicle are in use, the battery is going to be under more stress. More use of vehicle features will inevitably decrease the range.

The trailer used in the test is a converted World War II work truck or jeep that weighs 550 lbs. The trailer was stacked with an outdoor fold-out tent and its necessary rack for use that weighs an additional 200 extra pounds, making the total weight of the trailer about 750 lbs. Sullins’ total trip covered 26.7 miles of both inner-city streets and freeways both ways. This gives the test more validity as drivers likely use a combination of highways and city streets when towing a trailer.

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Sullins noted that his total energy usage during the test was 12 kilowatt-hours (kWh), and his vehicle showed an average consumption of 448 Watt-hours per mile (Wh/mile). This energy output differs from his normal driving efficiency, as his car showed an average consumption of 320 Wh/mi when it traversed the same route without a trailer.

Credit: YouTube | Teslanomics with Ben Sullins

These figures suggest that the additional weight from the trailer resulted in a 40% loss in range, which translates to a 49% efficiency rate. With this in mind, Sullins noted that with the 750-lb WWII trailer, his Model 3 would have a total real-world range of 160 miles. This is ample for the casual weekend camping trip, but likely challenging for inter-state long-distance travel.

As the Teslanomics host emphasized, there are many variables involved when it comes to electric vehicles and their efficiency. The Tesla Model 3 in the video, for example, seemed to be equipped with Turbine Wheels, which are larger and not specifically designed for the Model 3. The average speed of the vehicle during the trip also played a factor in the Model 3’s efficiency while towing. As noted by commenters on Sullins’ video, electric car towing veterans from countries such as Norway usually travel at about 55 mph when they are pulling heavy loads to help maximize range.

Credit: YouTube | Teslanomics with Ben Sullins

While this decrease in range is expected and inconvenient, there are plenty of precautions Tesla drivers can take to avoid the troubles that come with towing. Luckily, Superchargers are readily available, and Tesla has worked diligently to increase the presence of charging stations across the world.

If a trailer or other item that needs to be towed is attached to a Tesla, expect decreases in range and plan by stopping at Superchargers on the way. Tesla’s in-car trip planning software will get drivers to their destinations in the most efficient way possible, even if the vehicle is towing a heavy trailer.

Watch Ben Sullins’ video on the Model 3’s range when towing a 750-lb trailer below.

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Joey has been a journalist covering electric mobility at TESLARATI since August 2019. In his spare time, Joey is playing golf, watching MMA, or cheering on any of his favorite sports teams, including the Baltimore Ravens and Orioles, Miami Heat, Washington Capitals, and Penn State Nittany Lions. You can get in touch with joey at joey@teslarati.com. He is also on X @KlenderJoey. If you're looking for great Tesla accessories, check out shop.teslarati.com

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Elon Musk

Tesla FSD is about to know your specific house and neighborhood better than any map

Tesla confirmed it is building a feature that lets you teach your car where to go.

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Tesla FSD 14.3 [Credit: TESLARATI)

Tesla is building a feature that will let drivers talk to their car in plain language and teach it exactly what to do, with the vehicle remembering those instructions for every future trip. Tesla VP of AI Software Ashok Elluswamy confirmed it this week on X after a user pointed out one of FSD’s most persistent real-world limitations is that the system has no way to receive contextual instructions the way a human driver would.

“FSD would be twice as useful in neighborhoods if I could actually talk to the car and tell it which driveway to pull into, the same way I would with a person driving me home. Right now, there isn’t really an input for telling Tesla what color the house is or giving it specific context like that. Google Maps is also notorious for putting pins on houses that aren’t actually yours.” Tesla owner Chris further noted, “It would be so cool if I could talk to the car while going down my street and say something like, ‘It’s the white house on the left, just past that SUV,’ and then have FSD remember that for next time.”

This feature would carry more weight than it might seem. Grok has been available inside Tesla vehicles since July 2025, expanded to European vehicles in February 2026, and gained a hands-free “Hey Grok” wake word with location-based reminders and natural-language navigation in the Spring 2026 update. But up to this point, Grok has had no authority over how FSD actually drives. Lane changes, braking, speed, and parking maneuvers remain entirely within FSD’s autonomous decision-making loop. What Elluswamy confirmed is that the next step pushes Grok into a supervisor role, one that translates spoken intent directly into driving decisions.

Tesla teases greater Grok FSD integration and ‘Banish’ feature ‘in about 3 months’

Elluswamy acknowledged at a January 2026 conference that while fully integrated voice control is on Tesla’s roadmap, “it opens up an entire area of testing that we have to do. For example, you shouldn’t be able to tell the car to crash, and it shouldn’t crash.” Elon Musk subsequently confirmed on June 23 that Grok voice commands will pass to FSD’s planning layer by September 2026, a three month timeline from confirmation to deployment.

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The deeper significance is what this does for Tesla’s AI training flywheel. Every time an owner corrects FSD with a spoken instruction and the car learns and remembers it, that interaction becomes a data point covering an edge case that no simulation or scripted test could have generated. A fleet of millions of Tesla vehicles crowdsourcing hyper-local contextual knowledge, which driveway, which gate entrance, which side of the street, builds a layer of geographic and behavioral intelligence that competitors without a comparable fleet simply cannot replicate at the same speed or scale.

As Teslarati has reported, Tesla’s Cybercab and robotaxi operations have expanded to Miami following the Austin launch, with rider profiles already collecting preference data. Voice-taught contextual instructions linked to individual rider profiles means a Cybercab could eventually know before it arrives exactly which entrance to use, where to wait, and how to navigate the final hundred feet of any trip it has made before.

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Tesla app update makes Robotaxi ownership make a lot more sense

Tesla’s app now shows a live indicator when your car is actively driving itself.

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A recent Tesla app update, released last week  (4.58.5), gives visibility on whether a vehicle is navigating in its semi-autonomous mode or being drive by a human driver. The updated app now displays a live “Self-Driving” indicator in bright blue text directly beneath the vehicle’s speed readout whenever Full Self-Driving is actively engaged, along with the signature glowing blue navigation path that FSD users see on the main touchscreen. It is a small visual update with meaningful implications for how Tesla owners monitor their vehicles remotely.

The feature was first spotted in the wild by X user Jordan Camina, who shared video of a Hardware 3 Model S displaying the new animation through the app while driving. That detail is significant because it confirms the update is not limited to newer HW4 vehicles. It works across hardware generations, and Tesla confirmed it will eventually support all vehicles regardless of chip platform once both the app and vehicle software are updated. The vehicle side requires software version 2026.20.6.1, which has reached nearly 40% of the fleet so far, as monitored by NotaTeslaApp.

The feature makes the most practical sense when viewed through the lens of Tesla’s expanding robotaxi operation. In a robotaxi context, the owner of a vehicle generating ride revenue has a direct financial and safety interest in knowing whether their car is operating under autonomous control at any given moment. The app’s new FSD indicator gives fleet owners exactly that visibility, the same way a logistics company monitors whether a delivery driver is following the planned route. It also carries implications for Tesla’s insurance model. Tesla’s own insurance product prices premiums in part based on FSD engagement rates, and real-time visibility into when FSD is active creates a feedback loop that could eventually tie directly into policy pricing. For individual owners who have opted their personal vehicles into the robotaxi network, the update effectively turns the Tesla app into a fleet management dashboard, one that tells you whether your car is earning money, whether it is driving itself to do it, and whether everything is operating the way it should from wherever you happen to be.

Tesla expands Robotaxi to Florida, marking its third state for autonomy

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As Teslarati has reported, Tesla launched unsupervised robotaxi rides in Miami this summer, a milestone that makes a remote FSD status indicator significantly more practical than a cosmetic feature. When a vehicle is operating as a robotaxi without a driver present, the owner or fleet operator needs a reliable way to confirm autonomy is engaged. The app now provides exactly that.

As noted by NotATeslaApp, The update also arrived alongside a hint buried in the same app version that Tesla plans to use the cabin camera to verify driver identity before FSD can be activated. Pairing identity verification with a live autonomy status indicator points toward the infrastructure Tesla is building for a fleet of driverless vehicles that owners can monitor the way you would track a package delivery.

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Elon Musk

The Boring Company just doubled its tunneling power in Nashville

The Boring Company’s Prufrock MB2 is commissioned and ready to mine beneath Nashville’s streets.

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The Boring Company’s second tunnel boring machine, Prufrock MB2, is officially ready to dig in Nashville. The company confirmed the news on X, posting: “Prufrock-MB2 is ready to mine in Nashville! MB2 commissioning is complete, including the brief 11 rpm rotation shown here. Will MB2 catch up to MB1, who had quite the head start? And Prufrock-MB3 ships in August!”

MB2 arrives with meaningful improvements over its predecessor. Lessons learned from the launch and operation of MB1 have already been applied to MB2 to improve efficiency and prepare the machine for launch.

Traditional tunnel boring machines operate in a stop-and-go cycle, digging roughly five feet, halt, erect precast concrete segments to line the tunnel wall, then resume. That repeated interruption is one of the main reasons conventional tunneling is slow and expensive. Prufrock is designed to install the tunnel liner simultaneously with mining, eliminating the need to stop every five feet. The machine also skips the need for excavated launch pits. Prufrock arrives on a truck, tilts down, and launches into the ground within 24 hours. And when the tunnel is complete, it emerges from the ground and drives to its next launch site on a trailer, eliminating the need for expensive cranes or pit excavation. The machine is also fully electric and runs with zero people in the tunnel during normal operations, controlled remotely from a surface operations center.

It won’t be long before we hear of another major update on The Boring Company’s Music City Loop project – a planned underground transit network beneath Nashville that would move passengers in electric vehicles through a series of tunnels at highway speeds, and bypassing surface traffic entirely. Nashville was selected in part because of its strong rock conditions that suits the Prufrock machines well, and relatively less regulatory hurdles.

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Progress has been steady on multiple fronts. All 37 permits and approvals required ahead of tunneling have been obtained, out of 45 total. Key wins include a fully executed TDOT tunnel permit authorizing 25 miles of tunnel, unanimous airport authority approval for a Nashville International Airport station, and the city’s first residential station agreement serving downtown tower residents.

With MB1 already tunneling, MB2 now commissioned, and MB3 shipping in August, Nashville is becoming something of a live proving ground for scaled tunnel boring. The broader ambition is not limited to one city. The Boring Company’s stated goal is to make underground transportation a practical alternative to surface roads across major metro areas. Nashville is one of many cities, including a successful Las Vegas tunnel system, where that idea is being put to the test at real speed.

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