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Tesla Model Y’s quiet cabin is a subtle, critical selling point for all EV buyers

Tesla used Polyurethane, TPO, and lofted Fiberglass to eliminate noise from the Model Y's firewall. (Credit: MunroLive on YouTube)

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When Tesla unveiled the Model 3 in the summer of 2017, the company had released its first affordable vehicle. The Model 3 had numerous selling points, though some first production vehicles were reported to exhibit a lot of road noise inside the cabin, especially at high speeds.

Model 3 owners looked for any number of ways to reduce the noise. These included aftermarket door seals, tire foam insulation, and other modifications. Later builds of the vehicle displayed an improved noise reduction system, as CEO Elon Musk had noted in October 2019 that cabin noise had been “significantly improved in current production” of the Model 3.

In a recent episode of Sandy Munro’s extensive Model Y teardown series, the automotive veteran took a look at the numerous improvements Tesla made to its electric crossover. While the Model Y is not a sedan like the Model 3, the two vehicles are effectively siblings as they share 75% of the same parts.

Tesla adopted several new strategies to keep the Model Y’s cabin quiet. According to Munro, the outer portion of the vehicle’s firewall was covered by a mat made of “lofted fiberglass.” Fiberglass is an excellent insulating material that is used within residential buildings and houses to maintain temperature. However, it is also useful for reducing sound due to its thick and dense nature.

The inside of the firewall, which faces inward toward the vehicle’s cabin is quite different. Tesla used polyurethane (PUR) and Thermoplastic Polyolefin (TPO). PUR is a material commonly used when soundproofing rooms and is usually shaped like an egg carton to deaden sound waves. TPO is traditionally utilized for roofing and uses a mixture of rubber, talc, glass, carbon fiber, and other materials to insulate heat and sound. It is also used to reduce cabin noise in cars, as its flexible nature allows it to be conformed to the twists and turns of a vehicle’s body.

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Additionally, Tesla opted to use a series of pumpable and mastic sound deadener strips throughout the floorboard of the Model Y. These two materials can remove vibrations from the vehicle by stiffening the areas in the Model Y’s frame that are prone to excessive vibration. Both the pumpable and mastic sound deadeners were more frequently placed in the rear portion of the vehicle, where noise and vibrations are especially potent.

Tesla’s installation of these elements provided a much quieter ride for passengers and drivers. Long drives on highways at speeds of 55 MPH or more can prove to be some of the noisiest driving conditions, regardless of whether one is driving an EV or a petrol-powered car. This is due to wind, tire friction with the road, and outdoor weather conditions. These noises are easier to notice in an electric car, since the lack of a working internal combustion engine pretty much amplifies other noises in the cabin.

Tesla seems to have set out to make the Model Y its quietest car yet, and it seems to have succeeded. This is reflected in the feedback of some Model 3 owners, such as YouTube host Brian Jenkins, who recently posted a video documenting his favorite features of the Model Y after 1,200 miles of driving. Jenkins notes the Model Y’s quiet ride is one of his favorite features. He added that he expected more cabin noise, but the Model Y’s cabin remained quiet. Prior to getting a Model Y, Jenkins drove a Model 3 that he fitted with noise reduction seals.

Interestingly enough, Tesla has released Joe Mode last year, a feature that reduces the audible alerts in the vehicle’s rear to prevent kids from waking up during nighttime trips. Coupled with the Model Y’s already-quiet cabin, features like Joe Mode will be extra effective. It can even be an additional selling point for the vehicle. Every parent out there who has attempted long road trips with kids would attest to the importance of a quiet cabin when the kids are asleep, after all.

Watch Sandy Munro’s breakdown of the Model Y’s cabin noise reduction 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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Nikola Motor founder Trevor Milton given full pardon by President Trump

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Credit: Nikola Motor

Nikola Motor founder Trevor Milton has been given a full pardon by U.S. President Donald Trump in an unprecedented turn of events.

Trevor Milton Media announced late Thursday that the formerly jailed founder of the all-electric automaker that President Trump had “pledged to end the political weaponization of the Justice Department. This pardon marks a step toward fulfilling that commitment.”

Milton was sentenced to four years in prison in December 2023 after being found guilty of multiple counts of fraud.

Nikola founder Trevor Milton sentenced to four years in prison

“I was not a very seasoned CEO,” Milton said after his sentencing. Questions about the legitimacy of some Nikola product demonstrations and several statements that were found to be misleading regarding the company’s progress on its vehicles brought Milton to U.S. Federal Court to face two counts of wire fraud and one count of securities fraud.

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Now, he is free.

Milton said in a statement:

“This pardon is not just about me—it’s about every American who has been railroaded by the government, and unfortunately, that’s a lot of people. It is no wonder why trust and confidence in the Justice Department has eroded to nothing. I wish judges would stop believing whatever the prosecutors feed them so Americans could trust the justice system again. Until that happens, our justice system will continue to erode until there is nothing left. The 90+% conviction rate in New York is appalling and is a result of prosecutors getting whatever they want and putting innocent people in prison. I saw firsthand the tactics they use to achieve those guaranteed convictions. I am incredibly grateful to President Trump for his courage in standing up for what is right and for granting me this sacred pardon of innocence.”

Milton will now launch a documentary that is available for preview here.

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Tesla vandal who lit Las Vegas repair center on fire arrested

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A vandal in Las Vegas who lit a Tesla repair center on fire has been arrested, bringing a name and face to the crime that engulfed vehicles and a structure in flames.

Officers in Las Vegas arrested Paul Kim, a 36-year-old, on Wednesday. He faces charges of arson and possessing an explosive device.

The Tesla repair center at 6260 West Badura Avenue was set aflame on March 18 at around 2:45 a.m. In total, five vehicles were set on fire, as well as the building itself. It was one of the more notable instances of vandalism against Tesla in recent months, but police now have their culprit.

Las Vegas Metro Police Department Sheriff Dori Koren described the weapons Kim used to execute the attack:

“He used what appeared to be multiple Molotov cocktails and firearms to conduct his attack.”

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As the instances of attacks on Tesla continue to be publicized, we are now seeing considerable pushback from owners, the company, and even the United States government regarding what it calls “domestic terrorism.”

Owners are now filing lawsuits against those who vandalize their vehicles, as the first civil suit against a vandal was filed in Texas yesterday.

Tesla has not made any moves itself against the vandals, but we expect the company to potentially enter some litigation against groups or politicians that incite violence against its property and the owners of its vehicles.

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Additionally, the U.S. government has utilized the FBI to probe incidents against Tesla as a part of them being constituted as instances of domestic terrorism. Earlier this month, the Bureau established a specific task force to handle Tesla-related attacks.

“The FBI has been investigating the increase in violent activity toward Tesla, and over the last few days, we have taken additional steps to crack down and coordinate our response,” FBI head Kash Patel said on X. “This is domestic terrorism. Those responsible will be pursued, caught, and brought to justice.”

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Elon Musk

Elon Musk clarifies Trump tariff effect on Tesla: “The cost impact is not trivial”

The U.S. President has stated that Elon Musk stayed silent and provided no input in the administration’s tariffs.

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MINISTÉRIO DAS COMUNICAÇÕES, CC BY 2.0 , via Wikimedia Commons

U.S. President Donald Trump’s plan to implement a 25% tariff on non-U.S.-made vehicles starting next week would affect American electric car maker Tesla. 

This was confirmed by CEO Elon Musk in a recent post on social media platform X.

Musk and Trump

While Elon Musk works closely with the Trump administration due to his role in the Department of Government Efficiency (DOGE), the U.S. president has emphasized that the Tesla CEO never asks for favors. This was highlighted in his recent comments, when he stated that Elon Musk stayed silent and provided no input in the administration’s 25% auto tariffs.

When asked by reporters if the new tariffs would be good for Tesla, Trump noted that they may be “net neutral or they may be good.” The U.S. president also pointed to Tesla’s automotive plants in Fremont, California and Austin, Texas, which produce vehicles that are sold in the country. “Anybody that has plants in the United States — it’s going to be good for them,” Trump noted.

Tesla Affected

In a post on X, Elon Musk clarified that the Trump administration’s tariffs would affect the prices of vehicle parts that are sourced from other countries. This was a concern that Tesla previously outlined in a letter to the U.S. Trade Representative, which noted that even with “aggressive localization” of its supply chain, “certain parts and components are difficult or impossible to source within the United States.”

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As per Musk in his recent post on X, the cost impact of the Trump administration’s tariffs is no joke. “To be clear, this will affect the price of parts in Tesla cars that come from other countries. The cost impact is not trivial,” Musk wrote in his post.

Potential Effects

Reactions to Musk’s comments from users of the social media platform were varied, with some speculating that the Trump auto tariffs could result in Teslas becoming more expensive in the United States. Despite this, the potential increases in Tesla’s vehicle prices might not be as notable as other cars, particularly those that are produced outside the country.

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