The Rivian R2 Squeezed Out Six Extra Miles Of Range With This Innovative Design

• No, the Rivian R2 isn’t missing a rear wiper. The automaker actually hid the wiper right inside the tailgate.
• That might seem like a boring fact, but there’s a lot to nerd out on when considering how the engineers chose that spot.
• EVs don’t always have rear wipers to maximize aerodynamics, much to the consternation of owners. 

There are two types of electric car companies in the world: ones that slap parts wherever they fit, and others that apparently run computational fluid-dynamics simulations over the most mundane features to squeeze every last ounce of range out of their cars. Guess which one Rivian decided to be when designing the upcoming R2 SUV.

One of the tiny features that Rivian’s engineers obsessed over when designing the truck was the rear wiper. Ultimately, it was decided that the R2 absolutely needed one, but it also needed to have a rear window that could roll down and couldn’t sacrifice miles for better visibility in the rain. Many EVs, like the Toyota bZ4X and original Kia EV6 and Hyundai Ioniq 5, did without rear wipers for various reasons—and this was not always a popular choice with car-buyers.

So Rivian engineers did something unconventional and created a tiny recessed pocket that the rear wiper calls home when not in use.

2026 Rivian R2 Prototype Drive

Photo by: Patrick George

At the R2 prototype drive event attended by InsideEVs’ Editor-in-Chief Patrick George, Rivian’s design chief Jeff Hammoud explained why. The rear window rolls down, and people may to store gear out of it, like surfboards. “[We couldn’t] package a rear wiper in a spoiler like some other vehicles, because there’s just no packaging space for it,” Hammoud said. “So your other option is to attach it to the body, one that doesn’t look great, but then also causes issues if you’re pulling things in and out.”

The patent for the Rivian R2 rear wiper shows it tucked into the tailgate.

Photo by: USPTO

The second reason is where things start to get deliciously nerdy. Even though the R2 looks like it has the aerodynamics of a cinderblock, its beautiful boxiness has a subtle teardrop shape to the roofline that gets tucked underneath of the rear spoiler. Put a wiper and motor up there, and you’ve ruined the shape that allows for clean-flowing air. So the wiper couldn’t live up top, either.

“Even though we had this really nice two-box silhouette, aerodynamic efficiency was still something that was very important,” Hammoud said. 

Engineers validated that by testing out the effects of mounting the wiper at the top in both CFD simulations and in live wind tunnels—but never on a validation truck that hit the road, especially when Rivian checked the math.

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Source: Patrick George

In fact, the automaker told InsideEVs that by moving the parts into the pocket and out of the way of the wind, it was able to add six miles to the R2’s overall range. Six miles, just from the placement of a windshield wiper.

And, yes, Rivian thought about water and winter. The automaker says that the small pocket includes a hidden drain that lets water flow out from below the taillight so you’re not driving around with a portable bird bath after a storm. It has a heating element to keep the area clear of ice and snow, plus Rivian tells me that it also has a few software tricks up its sleeve to raise the wiper out of its home to position when inclement weather is inbound.

It’s a tiny detail. To most folks, a wiper is a wiper that serves one single purpose. But to Rivian and the R2’s team, the wiper was just a piece of the massively important puzzle that is the R2.