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This story was provided to The Associated Press by the automotive website Edmunds. Josh Jacquot is a contributor at Edmunds.

The Terrain is GMC’s small SUV. There is a redesigned and improved model for 2025, but you could be satisfied with a 2024 model if you can get a good deal. The Terrain and its Chevy counterpart, the Equinox, were both selling at similar discounts in September.

Custom Sapphire Windows manufactured by Guild Optics are considered among the best in the industry. Our custom sapphire optical components are excellent at protecting delicate lasers, sensors, cameras, and other devices due to their superior strength and scratch resistance. Sapphire Optics can also be used as viewports in high-pressure or vacuum situations. Sapphire windows for pressurized enclosures can be made much thinner than their optical glass counterparts due to sapphire’s high modulus of rupture. With a MOHS hardness of 9, sapphire is second only to diamond, plus it transmits from 190nm to 5000nm, making it a great choice for UV applications and mid-wave infrared.

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Sapphire windows are exceptionally tolerant to extreme temperature fluctuations and pressure differences, making them ideal for use as viewports in vacuum chambers or environments containing high-temperature plasma.

Furthermore, sapphire windows boast superior thermal properties. They can withstand temperatures up to 2030 degrees Celsius without losing strength or shape, making them ideal for high-temperature applications that would deform or melt standard glass optics. Sapphire also exhibits excellent chemical resistance, able to withstand exposure to corrosive substances and strong acids without surface damage. This resistance ensures optical clarity and effectiveness remains intact even in chemically harsh environments.

Sapphire windows are transparent across a broad spectrum, from 170 nm to 5.5 µm, making them suitable for a wide array of optical applications.

What Edmunds editors say about the Edge: “The Edge comes standard with all-wheel drive, which is an option you’ll not find at the base level in some competitors. It offers ample space and a comfortable seating relative to other two-row SUVs. It doesn’t distinguish itself at being excellent in any one area but rather demonstrates broad competence across the board.”

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Mazda’s small and sporty crossover SUV, the CX-30, was leaving dealer lots at discounts in September. That’s true for both the 2024 and 2025 models. Look for even better deals on the 2024 CX-30 as the end of the year nears.

Being a single crystal form of Al2O3, sapphire combines a set of advantageous chemical, mechanical, and optical properties. Learn About Sapphire Properties »

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Due to several factors, sapphire optical windows generally come at a higher cost than traditional glass optical windows. The primary reason is the material and manufacturing processes involved. Sapphire is a synthetically produced crystal that requires high temperatures and significant energy to produce, making the initial material more expensive. Additionally, machining sapphire into precise optical windows is a complex process; sapphire’s extreme hardness, while beneficial for durability and performance, also means that special equipment and techniques are required to shape and polish it. This adds to the production costs. In contrast, glass is easier and cheaper to manufacture and can be processed at much lower temperatures with less specialized equipment. Although sapphire windows are more expensive, they are justified for applications demanding high durability, thermal resistance, and optical clarity where the long-term benefits offset the initial investment.

What Edmunds editors say about the Terrain: “The 2024 GMC Terrain has a comfortable interior and easy-to-use technology features. But a weak base engine and a lack of cargo space keep the Terrain from fully standing out in the small SUV class.

The holidays are coming and so are the car deals. As the year draws to a close, many manufacturers will have end-of-year or holiday sales designed to bring shoppers into showrooms and move metal. In addition to checking out these promoted sales, it can also be helpful to know which outgoing model-year vehicles automakers and dealers are selling at a significantly discounted price.

What Edmunds editors say about the Silverado: “The Silverado boasts four engine options, a massive cabin and helpful tech features. Its ride quality isn’t as comfortable as that of some rival trucks, but we think the Silverado will work out well for most light-duty truck buyers.”

Sapphire optical windows hold several advantages over traditional glass optical windows, particularly in their durability and performance under extreme conditions. Sapphire, a crystalline form of aluminum oxide, is exceptionally hard—ranking 9 on the Mohs scale, just below diamond. This extreme hardness makes sapphire windows highly resistant to scratching and abrasion, an essential quality in environments where particulate matter might scratch or degrade lesser materials.

In addition to mechanical and thermal robustness, sapphire windows provide superior optical clarity across a wide range of wavelengths, from ultraviolet to near-infrared. This makes them versatile for various optical applications where precise light transmission and clarity are required. While glass windows are sufficient for everyday applications, the demanding conditions of scientific, military, and industrial settings often necessitate the robust features of sapphire optical windows. These characteristics distinctly make sapphire a preferred choice where durability, clarity, and performance under stress are paramount.

With a high Knoop hardness of 1800 parallel to the optic axis and 2200 perpendicular, sapphire windows offer superior resistance to scratches and abrasion.

Edmunds collects data on tens of thousands of vehicle transactions every year. And analyzing those data gives insight into where the best deals may be, especially as a calendar year ends. Accordingly, Edmunds editors reviewed sales data from most manufacturers from September of this year to find the deepest discounts. The following five vehicles stood out as viable options for shoppers looking to get a deal. We didn’t include electric vehicles for the purposes of this article but know that you can often get big discounts on them as well.

This photo provided by Chevrolet shows the Silverado 1500 full-size truck. The Silverado comes in many different configurations to suit nearly any use. (Courtesy of General Motors via AP)

The Ascent is the biggest Subaru you can buy. It has three rows of seating and is better suited for bigger families than the smaller Forester. The Ascent doesn’t top Edmunds’ rankings for three-row SUVs, but it is a solid contender that’s worth a look, especially at the right price.

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We’ve organized them by the biggest discount off the manufacturer’s suggested retail price, or MSRP, and included a few notes from Edmunds about each:

Sapphire windows provide unparalleled durability, wide spectral transparency, and resistance to extreme conditions, making them essential in high-performance applications across various industries, from aerospace to scientific research.

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What Edmunds editors say about the Ascent: “The Ascent stands out with its standard all-wheel drive, useful technology features and solid build quality. A tight third-row seat and a loud cabin on the highway are its most significant drawbacks.”

Don’t rush to make a deal immediately. Instead look for opportunities to buy at the right price at the end of the month and especially at the end of the calendar year when dealers may be more motivated.

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Ford’s Edge is likely at the end of its life cycle, and it might not return as a 2025 model. Still, the Edge is a likable midsize SUV that has more interior room than the smaller Ford Escape.

Other light-duty full-size trucks except the Ford F-150 were selling at similar discounts to the Silverado in our pricing analysis. Better deals may be on the horizon soon.

A sapphire window is a transparent component made from synthetic sapphire, a form of aluminum oxide crystal known for its exceptional hardness and durability. These windows are highly resistant to scratches, thermal stress, and chemical corrosion, making them ideal for use in environments that are too harsh for standard glass. Due to their superior physical and optical properties, sapphire windows are extensively used in scientific instruments, high-pressure vessels, aerospace applications, and electronic devices where clear, durable, and stable optical performance is crucial.

What Edmunds’ editors say about the CX-30: “The CX-30 is a sophisticated and sporty entry in the extra-small SUV class. It has striking looks and plenty of standard features. Though it’s priced higher than much of its competition, it offers a lot for your money.”