Buyer’s Guide: Rivian R1S vs Tesla Model X

By Karan Singh
Not a Tesla App

The Rivian R1S and the Tesla Model X are two of the premiere choices when buying a large electric SUV. So, we put together a buyer’s guide to help customers search for their EV of choice.

Both the R1S and the Model X are fantastic vehicles, and we’re not here to put one up or the other down. Instead, we’ll be looking at the advantages each vehicle brings – everyone has different needs for their vehicle, and some may favor one over the other.

Price, Range, and Specs

The R1S and the Model X are both unique vehicles in their own right, but each has their own set of configurations that could work better for your family. The table below compares some of the basic specs of these vehicles.

Vehicle

Price (USD)

Range

0-60 mph

Seats

Model X LR

$79,990

335mi

3.8s

5, 6, or 7*

Model X Plaid

$94,990

326mi

2.5s

6

R1S Standard

$75,900

270mi

4.5s

7

R1S Large

$82,900

330mi

3.4s

7

R1S Max

$89,900

410mi

3.4s

7

R1S Tri Max

$105,900

371mi

2.9s

7

R1S Quad Max**

TBC

350mi est.

2.6s

7

* The Model X LR can be equipped with 5, 6, or 7 seat interiors.
** The R1S Quad Max pricing and range are unavailable today, and deliveries will begin in 2025.

All the prices listed above are without considering any Federal, State, or Provincial EV Rebates you may qualify for.

Seating

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The Model X offers more flexibility in terms of seating, with buyers being able to pick from a 5-seat configuration with a bench seat in the second row and more cargo room or go up to a 6-seat layout with captain chairs and a center row. The 7-seat configuration keeps the bench seat in the second row and the two rear seats in the third row.

The R1S only has a single-seat configuration with a bench seat in the second row and two seats in the third row.

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Interior

When looking at the interiors of each vehicle, both are well-equipped and luxurious right off the bat. Both vehicles come in vegan leather alternatives, and the seats are well-designed and comfortable.

Rivian

Rivian and Tesla both have unique interior finishes – the R1S comes with the improved Ascend finish on the Tri-Max and the Quad Max, while the Model X Plaid comes with carbon fiber trim throughout the interior rather than the standard wooden finishes.

Both also have a set of unique internal finishes to choose from, all with high-quality materials. Tesla, for its part, focuses on black, white, and beige, while Rivian offers a wider range of colors. We suggest looking at both interiors online, and in person if you have the opportunity to.

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Road Tripping & Families

Both vehicles have some fantastic advantages for both road-tripping, as well as every day errands with the family.

In terms of interior access, the Model X, with its 6-seat layout, offers better access to and from the third row. The falcon wing doors also make it easier for passengers to get in and out of any of the rear seats. Since they’re automated doors and require very little space to open, it’s also easier for kids to get in and out of the vehicle. If your child is in a car seat, the falcon wing doors also provide a significant advantage when putting your child into the car seat since the doors open up over your head instead of swinging outward.

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On the flip side, the R1S is a larger vehicle all around, and the 7-seat configuration leaves you with plenty of space for a large family. However, third-row access will be more difficult since it requires you to flip down one of the second-row seats. The middle row leaves plenty of space for even taller people to get into. In fact, with three people in the back, you’ll find a considerably larger amount of shoulder room and foot room than in the Model X. If you’ve got a big family or find yourself driving around lots of people, the R1S offers a definite advantage in this area.

Rear Screen

Tesla / Rivian

The Model X comes with a fully capable rear display measuring almost 9 inches, which passengers can use for a wide variety of things, including playing games, watching videos on Netflix, YouTube, or other services, in addition to controlling parts of the vehicle such as seat heaters and the rear climate.

The R1S 6.8-inch rear display is aimed more at being a utility instead of offering entertainment benefits. It’ll let passengers control music, adjust the climate, and see your trip’s progress, but currently doesn’t offer the ability to watch any video content.

Both screens are placed directly behind the center armrest of the front seats, which gives an adequate view for passengers in the second row, but not the third.

Tesla has the advantages hands-down on this one, with the rear screen not only supporting video streaming while the vehicle is moving but also supporting a second channel of Bluetooth audio so that passengers in the back can listen to different content than the front passengers.

Rivian may add video capability to their rear screen in the future. However, it’s not clear whether they’ll support separate audio for the rear display. The Rivian display is also much smaller and has a non-standard ratio, meaning that video content won’t fill the whole screen.

Tesla also provides passengers in the front the ability to control the rear screen. If you have young kids, you can actually bring up the rear screen on the main display in the front and load up a video for your kids.

Storage Space

While both vehicles are considered “SUVs”, the R1S is the clear taker in terms of available storage space, both up front in the frunk, and cargo space in the back. However, the Model X does offer a fairly large amount of storage, and that may be good enough for most people.

Let’s take a look at the overall storage space capabilities of each vehicle.

Model X

R1S

Frunk

6.5 cu ft

11.1 cu ft

Trunk*

33.8 cu ft

46.7 cu ft

Roof Rack

Not Capable

Capable

Towing**

Up to 5000lb

Up to 7700lb

Vehicle Height

66”

77”

Vehicle Width

79”

82”

Vehicle Length

198”

201”

* This is cubic feet of space, with the third row folded flat in either vehicle.

** Towing specifications depend on tire size and motor options for each vehicle, and a proper weight-distributing hitch may be required. Consult the service manuals for exact details.

Charging

Both the R1S and the Model X are top-of-the-line electric vehicles, and both offer fantastic charging speeds and range.

The R1S offers a maximum charging speed of 220kW, while the Model X offers a maximum charging speed of 250kW. Overall, both vehicles, when pre-conditioned and at a low state of charge, will charge fairly quickly, making them both great choices for road-tripping. Of course, you can also use slower AC charging for either vehicle.

The largest difference in terms of charging is that the Model X is supported at every Tesla Supercharger - the largest and most reliable charging network in North America. The R1S can also be charged at some Tesla Superchargers, but it’ll need to be a V4 Supercharger that has a built-in adapter referred to as the “Magic Dock,” or you’ll need to have a NACS to CSS adapter.

Both vehicles are capable of charging at third-party CCS stations like Electrify America, but the Model X will require a CCS to NACS adapter. The R1S also supports charging at Rivian’s excellent Rivian Adventure Network (RAN) chargers, which are currently limited to Rivian vehicles. These chargers are typically located in adventuring hotspots throughout the continental United States.

Autonomy

On the autonomy front, Tesla is a clear winner – especially if you want a vehicle that can mostly drive itself today with minimal interventions. FSD is an exceptional software package that sees continuous OTA improvements, and for many subscribers and owners of the software – it’s a service that they couldn’t live without.

FSD Supervised today is a fantastic system able to route itself through city streets and highways, and get you from point A to point B, provided you’re paying attention and can intervene if the system can’t handle a situation.

And if you don’t want to use FSD, the Model X comes equipped with Basic Autopilot, which can provide adaptive cruise control and lane assist, as well as all the safety features that come standard on every Tesla.

Rivian, on the other hand, doesn’t offer a full autonomy package, but on their newer Generation 2 vehicles, it does offer some autonomy features that are similar to Tesla’s Basic Autopilot. Rivian is actively working on improving its autonomy software and promises to expand its functionality in the future. Rivian’s Driver+ on their Gen 1 vehicles (2024 and older) provides highway assist on select highways, as well as adaptive cruise control, lane assist, and lane change assist, alongside all of Rivian’s standard safety features.

Overall, Rivian’s package is less capable than Tesla’s today, but it still offers some driver-assist features on the highway.

Comfort & Luxury

When it comes to big SUVs, and especially luxury vehicle purchases in general, comfort is a big aspect in terms of the purchase. Both the R1S and the Model X bring adaptive air suspension, which means both vehicles ride more comfortably than most cars. The R1S does offer a few more adjustable comfort-focused options for its air suspension than the Model X, such as different drive modes, but the difference between the vehicles is remarkably close.

In terms of seat comfort, both the R1S and the Model X have spectacularly comfortable seats. The front seats on both vehicles are heated and cooled, while the second and third rows are limited to heated seats that can be controlled through the rear screen. Neither vehicle brings massage seats to the table, but if that’s a dealbreaker, we suggest waiting for Lucid’s upcoming Gravity SUV.

While the Model X has luxurious additions like auto-opening front doors as you approach, the amazing falcon-wing doors, and the ability to automatically open the frunk or trunk hands-free, the Rivian also has some of its own luxuries.

The Rivian R1S features a powered frunk which can be opened or closed from inside the vehicle or from the Rivian app. It also features some nice additions, such as the built-in flashlight, the optional built-in air compressor, or a dynamic glass roof that can be dimmed at the touch of a button. The R1S also includes customizable ambient lighting and support for surround sound using Dolby Atmos (requires a subscription to Connect+).

Rivian Wave

Software & Software Updates

Both brands offer very software-focused vehicles that receive software updates several times per year, roughly once per month. Both of these vehicles are constantly getting better and will receive new features that keep the vehicle feeling new and exciting. While the software user interface will be a personal preference, Tesla currently has more software features and entertainment options. However, both vehicles include features like Dog Mode / Pet Comfort, Sentry Mode / Gear Guard, Camp Mode, and Launch Mode for performance variants. Tesla and Rivian both like to toss in the occasional easter egg as well.

Summary

Both the Tesla Model X and the Rivian R1S are excellent vehicles in their own right, and each offers a unique and fresh take on the SUV experience. They’re both fantastic EVs, with some of the best battery and motor technology in the business, and you can’t go wrong selecting either one. In general, the Riviam R1S offers a more spacious interior with more cargo room with finer materials, while the Model X offers a more robust driver-assist system, a better charging network, more entertainment options, and a superior seat layout.

We highly recommend you head over to a Tesla Showroom and to a Rivian Space to get acquainted with both vehicles in person.

Tesla Intel Atom (MCU 2) and AMD Ryzen (MCU 3): Feature Differences and How to Tell What You Have

By Karan Singh
DirtyTesla

Tesla vehicles are equipped with two main computer systems: the MCU (Media Control Unit), which is responsible for entertainment and display functions, and the Autopilot/FSD Unit, often referred to as the FSD Computer.

Both of these systems have evolved over the years, and they’re commonly referred to by their generation. For example, MCU 2 refers to the second generation of the Media Control Unit. Similarly, the FSD computer is identified by its generation, often called Hardware 3 or Hardware 4, when referring to the third and fourth-generation hardware. More recently, Tesla has started referring to the FSD Computer as AI3 and AI4, but you’ll still hear the older terms used interchangeably.

These two systems are separate and they’re not upgraded at the same time, meaning it’s possible to have a vehicle with MCU 2 and FSD Hardware 3 or MCU 3 with Hardware 3. Some vehicles even feature MCU 1 alongside Hardware 3.

The MCU is not involved with Autopilot or FSD functions—it’s purely for infotainment and in-vehicle features such as vehicle visualization, gaming, maps, and entertainment. It doesn’t impact the capabilities or limitations of Tesla’s autonomous driving systems.

MCU 1 - NVIDIA Tegra 3

MCU 1 was the first media control unit to be introduced in Tesla vehicles, starting back in 2012. This system was used in the Model S and Model X until about April 2018, when Tesla began transitioning to MCU 2.

By the time the Model 3 launched in late 2017, it already included MCU 2. To keep legacy vehicles up to date, Tesla offers an infotainment retrofit that upgrades MCU 1 to MCU 2, which helps make the infotainment unit much more responsive and adds a variety of newer features. Tesla continues to support vehicles with MCU 1, although upgrades are much further apart. In 2024, Tesla added Automatic Emergency Braking (AEB) improvements to vehicles with MCU 1 and even support for FSD V12.3.6 (FSD HW3 required).

Period Offered: 2012 through April 2018

Upgrade: Available as a paid upgrade for Model S and Model X vehicles to go from MCU 1 to MCU 2.

MCU 2 - Intel Atom

The launch of the Model 3 introduced MCU 2, which ran on Intel’s Atom mobile processor. While the Intel Atom was capable at the time, it’s now considered outdated compared to modern standards. As Tesla continues to roll out new features, the limitations of the Atom processor have become more apparent.

There is a notable list of features that are unavailable to vehicles with MCU 2. Although Tesla has optimized software to improve compatibility, not all features have been made accessible to these vehicles.

Period Offered: MCU 2 was offered in 2017 (Model 3) through 2022 (availability differs based on region and model).

Upgrade: As of now, Tesla has not offered an upgrade path or retrofit to transition from MCU 2 to MCU 3, and they’re unlikely to do so.

MCU 3 - AMD Ryzen

In December 2021, Tesla began shipping vehicles with MCU 3, powered by AMD’s Ryzen processor. The first vehicles to feature MCU 3 were the refreshed Model S and Model X, which debuted in 2021. Shortly after, Model 3s and Model Ys were also equipped with MCU 3, and today, all Tesla vehicles, including the Cybertruck, come standard with MCU 3.

This MCU is now the most widely used on the road and is Tesla’s most advanced infotainment processor. It supports impressive 3D visualizations, allows improved gaming on the center touchscreen (and rear screens in equipped vehicles), and offers a host of other capabilities. MCU 3 is also the most feature-complete version, with new features being designed for it first and then backported to MCU 2 or MCU 1 when possible.

Period Offered: The first MCU 3 vehicles were released in December 2021 and is current through today.

Upgrade: MCU 3 is the most current infotainment unit that Tesla offers.

Features Missing on MCU 2 (Intel Atom)

High-fidelity park assist is limited to vehicles with MCU 3
High-fidelity park assist is limited to vehicles with MCU 3
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While Tesla does its best to continue to support MCU 2, there is a growing difference between the features available on a vehicle with an Intel Atom infotainment unit and one with the AMD Ryzen processor.

Feature

MCU 2

MCU 3

Games / Arcade

⚠️ Limited Games*

✅ Additional Games**

Parked View

⚠️ Split screen visualization with vehicle on left and map on right

✅ Full-screen Parked Viz - Shadows, Sun Reflections, Shadows

Vehicle Visualizations 

⚠️ Some limitations, such as non-transparent glass

✅ Improved visualizations

Full-Screen FSD Visualization

⚠️ Only Available in North America

✅ Available in All Regions

Zoom Meetings

❌ Not Available

✅ Available

High Fidelity Park Assist

⚠️ Top-Down Visualization Only

✅ Full 3D Visualization

Autopark Visualizations (video)

⚠️ Top-Down Visualization Only

✅ 3D Visualization

Improved UI for Display Modules - Media, Next Turn, Trip Planner

⚠️ Solid Color/Semi-Transparent

✅ Transparency + Background Blur for Display Modules

*Many recent game additions are available to MCU 3 only, including the ever-popular Vampire Survivors and Castle Doombad. Only certain Model S and Model X vehicles include a GPU and the ability to play games on Steam.

**Atari Games were removed from MCU 3 vehicles due to Emulator Licensing issues.

How to Tell - Intel or AMD

Identifying which MCU your vehicle has is straightforward. Simply go to Vehicle Options > Software > Additional Vehicle Information.

In the interface, you’ll find details about whether your vehicle is equipped with an Intel Atom (MCU 2) or AMD Ryzen processor (MCU 3).

MCU 4?

It’s been more than three years since Tesla introduced the AMD Ryzen-powered MCU. Despite advancements, including the transition from FSD Hardware 3 to AI4—and eventually AI5—there’s been no indication of an MCU 4 on the horizon.

The Ryzen processor’s impressive capabilities make it a solid choice for infotainment, and it’s well-suited to serve until there’s another big leap in CPU performance.

While Tesla will upgrade to MCU 4 at some point, it doesn’t seem imminent. Some may argue that Tesla transitioned to MCU 3 too late, leaving vehicles just a few years old feeling outdated. It’s possible Tesla might choose to introduce MCU 4 ahead of the need for more processing power, ensuring that older vehicles can continue to benefit from new software features in the future.

Tesla Expected to Add Turn Signal Stalk Back to Model 3

By Karan Singh
Not a Tesla App

Following the surprising return of the turn signal stalk on the refreshed Model Y, reliable Tesla source Chris Zheng has indicated that the Model 3 will also be receiving a turn stalk. While it initially seems surprising, Tesla mentioned that after receiving lots of customer feedback, there is a lot of demand for the return of the stalk.

For those who appreciate the newer turn signal buttons on vehicles like the Cybertruck, this might come as a surprise. However, the Model 3 and Model Y are designed for the average driver transitioning from a traditional vehicle, making the removal of the turn signal stalk an unexpected and potentially disappointing change.

Turn Stalk

In a conversation during the latest episode of Jay Leno’s Garage, Tesla’s VP of Vehicle Engineering, Lars Moravy, mentioned that Tesla works to remove superfluous parts. In this case, they removed one part too many - and are now bringing back the turn signal stalk.

The updated stalk on the refreshed Model Y is a simplified version of the current Model Y stalk. It doesn’t include multi-stage turn signals (short three flashes versus staying), buttons, or other features. Pure and simple - it is utilized for signaling left and right. The rest of the functions of a traditional stalk remain either on the wheel or on the screen.

Lack of Right ‘Shifter’ Stalk

Tesla has no intent to bring back the right stalk, which is traditionally used to shift the vehicle from Drive to Reverse and Park in Teslas. It’s also used to activate Autopilot. The shifting functionality will remain on-screen or available via the backup by tapping the buttons on the ceiling near the hazards button. Shifting via the dash is intuitive and convenient once you get used to it - and with AutoShift hopefully coming out of Beta sometime soon, this could get even better.

Autopilot activation will remain with a button on the steering wheel. While a vehicle with a single stalk may look a little odd at first, Lars mentioned that Tesla didn’t receive many complaints about shifting or Autopilot use.

Retrofit

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We haven’t heard anything about retrofitting the 2024+ Model 3s with the turn signal stalk at this point. However, we imagine this may be a possibility in the future.

However, we can recommend using the wireless Enhauto’s S3XY Stalks if you want to bring a single or dual stalks back to your refreshed Model 3 and don’t want to wait for an official retrofit to arrive. They’re easy to install, well-designed, and reliable.

Other Models

The big question now is: will Tesla bring back the turn signal stalk for its other models? It’s possible, but we doubt it. The Model S and Model X, especially with the Yoke, feel more natural without a stalk, and the button-based signals suit their design. While a stalk might occasionally be useful—like signaling in and out of a roundabout—any future refresh of the S or X would likely include steer-by-wire instead.

On the Cybertruck, the absence of a stalk goes unnoticed, thanks to steer-by-wire, as the squircle steering wheel is never in an awkward position. After thousands of kilometers of daily driving, including plenty of roundabouts, the author can confidently say the signal stalk isn’t missed at all. In fact, the turn signal buttons feel more intuitive, given how the Cybertruck handles.

That said, could Tesla offer signal stalks as an option for those who prefer them? It’s not out of the question. We’ll keep you updated, but in the meantime, let us know—do you prefer turn signal buttons or a traditional stalk?

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