The Insurance Institute for Highway Safety (IIHS) has released a study showing that Advanced Driver Assistance System (ADAS) safeguards are lacking across brands, with most of the 14 partially automated systems tested receiving “marginal” or “poor” ratings.
In a press release shared on Tuesday, the IIHS released early results from the new ratings system, noting that partial automation systems from Tesla, Ford, Nissan, and most other automakers that were tested were lacking in multiple categories. The study offered ratings of good, acceptable, marginal or poor, both overall and in specific categories.
Level 2 systems like Tesla Autopilot can improve drivers’ attentiveness: IIHS study
“We evaluated partial automation systems from BMW, Ford, General Motors, Genesis, Lexus, Mercedes-Benz, Nissan, Tesla and Volvo,” said David Harkey, IIHS President. “Most of them don’t include adequate measures to prevent misuse and keep drivers from losing focus on what’s happening on the road.”
Of the 14 partially automated systems tested thus far, only one system from any automaker was deemed acceptable, while two were rated marginal, 11 were rated poor, and none were rated good. The categories that were individually rated for each system included driver monitoring, attention reminders, emergency procedures, lane change, adaptive cruise control (ACC) resume, cooperative steering, and safety features.
The IIHS gave both Tesla’s Autopilot and Full Self-Driving (FSD) beta systems poor ratings overall, while Volvo Pilot Assist, Nissan ProPilot, Mercedes Active Distance Assist Distronic, Ford BlueCruise and several others were rated poor. Driver monitoring and attention reminders were some of the lower-rated categories across most brands, highlighting the ability for drivers to trick systems into thinking they’re being fully aware.
The research non-profit also noted that there was “little” evidence to support that partially automated systems like these are actually at the point that they currently make driving safer—though most companies target safety as a number one goal with ADAS programs.
“Some drivers may feel that partial automation makes long drives easier, but there is little evidence it makes driving safer,” Harkey said. “As many high-profile crashes have illustrated, it can introduce new risks when systems lack the appropriate safeguards.”
The top-rated systems in the index included Lexus Teammate with Advanced Drive with an acceptable rating, along with the GM Super Cruise and Nissan ProPilot Assist with Navi-Link. Every other system was rated poor overall.
You can see the full category breakdowns from tests of Tesla’s Autopilot and FSD beta systems from the IIHS below, along with those of a few others.

Credit: IIHS

Credit: IIHS

Credit: IIHS

Credit: IIHS

Credit: IIHS
“These results are worrying, considering how quickly vehicles with these partial automation systems are hitting our roadways,” Harkey added.
“But there’s a silver lining if you look at the performance of the group as a whole. No single system did well across the board, but in each category at least one system performed well. That means the fixes are readily available and, in some cases, may be accomplished with nothing more than a simple software update.”
Below you can see overall ratings for each system tested.
System Tested | Vehicle | Overall Rating |
---|---|---|
Lexus Teammate with Advanced Drive |
2022-2024 Lexus LS |
Acceptable |
GM Super Cruise |
2023-2024 GMC Sierra |
Marginal |
Nissan ProPILOT Assist with Navi-Link |
2023-2024 Nissan Ariya |
Marginal |
BMW Active Driving Assistant Pro |
2023-2024 BMW X1 |
Poor |
Ford BlueCruise |
2021-2024 Ford Mustang Mach-E |
Poor |
Ford Adaptive Cruise Control with Stop & Go and Lane Centering Assist |
2021-2024 Ford Mustang Mach-E |
Poor |
Genesis Highway Driving Assist 2 |
2023-2024 Genesis G90 |
Poor |
Genesis Smart Cruise Control/Lane Following Assist |
2023-2024 Genesis G90 |
Poor |
Lexus Dynamic Radar Cruise Control with Lane Tracing Assist |
2022-2024 Lexus LS |
Poor |
Mercedes-Benz Active Distance Assist DISTRONIC with Active Steering Assist |
2022-2023 Mercedes-Benz C-Class |
Poor |
Nissan ProPILOT Assist 2.0 |
2023-2024 Nissan Ariya |
Poor |
Tesla Autopilot version 2023.7.10 |
2021-2023 Tesla Model 3 |
Poor |
Tesla Full Self-Driving beta version 2023.7.10 |
2021-2023 Tesla Model 3 |
Poor |
Volvo Pilot Assist |
2022-2024 Volvo S90 |
Poor |
You can view the full list of rankings with individual category rankings from the IIHS here, or view the institute’s test protocol and rating guidelines here. Additionally, see the institute’s press release detailing the rating system’s early results here.
What are your thoughts? Let me know at zach@teslarati.com, find me on X at @zacharyvisconti, or send your tips to us at tips@teslarati.com.
News
Starship Flight 10 rescheduled as SpaceX targets Monday launch
SpaceX said it is now targeting Monday evening for Starship’s 10th flight test.

SpaceX stood down from its planned Starship Flight 10 on Sunday evening, citing an issue with ground systems.
The launch attempt was scheduled during a one-hour window that opened at 7:30 p.m. ET, but it was called off just 17 minutes before the window opened. SpaceX said it is now targeting Monday evening for Starship’s 10th flight test.
Flight 10 rescheduled
A lot of excitement was palpable during the lead up to Starship Flight 10’s first launch window. After the failures of Starship Flight 9, many were interested to see if SpaceX would be able to nail its mission objectives this time around. Starship itself seemed ready to fly, with the upper stage being loaded with propellant as scheduled. Later on, SpaceX also noted that Starship’s Super Heavy booster was also being loaded with propellant.
However, 17 before the launch window opened, SpaceX noted that it was “standing down from today’s tenth flight of Starship to allow time to troubleshoot an issue with ground systems.” Elon Musk, in a post on X, further clarified that a “ground side liquid oxygen leak needs to be fixed.” Musk did state that SpaceX will attempt Flight 10 again on Monday, August 25, 2025.
Starship and SpaceX’s development goals
The fully integrated Starship system is the tallest and most powerful rocket ever built, standing over 400 feet when stacked. Composed of the reusable Super Heavy booster and the Starship upper stage, the vehicle is central to SpaceX’s long-term ambitions of lunar and Martian missions. NASA has already selected Starship as the crewed lunar lander for Artemis, with its first astronaut landing mission tentatively set for 2027, as noted in a Space.com report.
So far, Starship has flown nine times from Starbase in Texas, with three launches this year alone. Each flight has offered critical data, though all three 2025 missions encountered notable failures. Flight 7 and Flight 8 ended in explosions less than 10 minutes after launch, while Flight 9 broke apart during reentry. Despite setbacks, SpaceX has continued refining Starship’s hardware and operations with each attempt. Needless to say, a successful Flight 10 would be a significant win for the Starship program.
News
Tesla makes big change to encourage Full Self-Driving purchases
Tesla Full Self-Driving was recently proven to be about ten times safer than a human driver in terms of accident frequency.

Tesla has made a big change to its Online Design Studio, hoping to encourage car buyers to purchase Full Self-Driving with their vehicles.
Now, when you look at ordering a car on Tesla’s website, the portion of the page that formerly showed a render of Full Self-Driving capabilities has been replaced by a compilation of the suite’s performance in a variety of challenging scenarios.
It’s a great way to show off FSD’s impressive ability to work through road conditions that can even stump human drivers.
🚨 Tesla is now showing a Full Self-Driving demo on its Design Studio to help encourage people to buy the suite for their new cars pic.twitter.com/RwhqbSStzs
— TESLARATI (@Teslarati) August 24, 2025
The move is much better than what the page previously illustrated. Now, people can see the true capabilities of the FSD suite and what it could do to change their perspective on how vehicles can be. Instead of a vessel of transportation, FSD turns cars into a semi-autonomous mode of travel.
Tesla Full Self-Driving is statistically very safe, logging about ten times the number of miles between accidents as human drivers, based on recent data the company released.
Tesla Q2 2025 vehicle safety report proves FSD makes driving almost 10X safer
It is available for purchase in two different ways: an outright purchase for $8,000 or in a monthly subscription for $99. This enables the software to essentially do a vast majority of the legwork of driving. Drivers must keep their eyes on the road and be prepared to take over if an intervention is needed.
However, FSD has been proven to be a very accurate and safe way to travel. Tesla recently released a video of a drive from the Bay Area to Los Angeles, a nearly seven-hour trip, under FSD without a single intervention ever needed:
Tesla flexes its most impressive and longest Full Self-Driving demo yet
From a personal perspective, Tesla Full Self-Driving is a great way to travel because it truly takes a lot of the stress out of driving. In the past, I’ve used it during weekend Demo Drives to navigate around my town to see if it could handle some of the tougher traffic in my area. It became such an amazing and convenient alternative that when I went back to my car, I truly missed the advantage of having it.
I took a Tesla Model Y weekend-long Demo Drive – Here’s what I learned
However, I am picking up my Tesla Model Y this coming weekend and will enjoy it for the free three months before subscribing to the monthly program.
News
Tesla offers new feature to save battery and reduce phantom drain
While in Low Power Mode, your vehicle continues to use energy for standby functions, screen activity, and Tesla app interactions. In cold weather, available energy may drop more quickly.”

Tesla is offering a new feature to help owners save battery and reduce phantom drain, an issue that some have complained of with their cars.
While Teslas are some of the most efficient EVs on the market, they utilize energy and battery life when they’re parked to keep certain features, like Sentry Mode, Summon Standby, and others, active in preparation for potential events that occur.
Keeping these features ready to perform utilizes energy, and if your car is parked at an airport where it could be sitting stagnant for a few days, the battery percentage could start to dwindle pretty significantly.
Because of this, Tesla is rolling out a new feature called “Low Power Mode,” which will automatically disable a handful of settings to combat battery dwindling and phantom battery drain.
Tesla writes in the release notes for the feature:
“When Low Power Mode is enabled, your vehicle will conserve energy by automatically disabling the following features:
-
- Sentry Mode
- Summon Standby
- Outlets
- Keep Accessory Power On
- Keep Climate On and Camp Mode
- Scheduled Preconditioning
- Cabin Overheat Protection
While charging with Low Power Mode enabled:
-
- Sentry Mode and accessory power will remain available
- Keep Climate On and Camp Mode are only available when Supercharging
While in Low Power Mode, your vehicle continues to use energy for standby functions, screen activity, and Tesla app interactions. In cold weather, available energy may drop more quickly.”
Trying the new “low power mode” while I travel – you can enable it in vehicle controls menu->charging->low power mode or through the mobile app quick actions.
I use hands free frunk function, so I replaced the frunk quick action and enabled low power mode. 196 miles 8/23 1:30pm pic.twitter.com/E0zzXtwHmr
— Wes (@wmorrill3) August 23, 2025
This feature seemed to be a reaction to a past issue that an owner had as their Cybertruck continued to utilize energy even though the pickup was parked at an airport and the owner was in Japan. The Cybertruck had utilized a lot of energy to keep standby functions active, which left the owner in an interesting spot when they returned.
CEO Elon Musk stepped in, and it seems this feature might have been a reaction to that situation. This is an ideal thing to use if you’re looking to conserve your battery’s state of charge.
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