Name: Used 2023 INFINITI Q50 Red Sport 400 w/ Black Opal Edition
Brand: INFINITI
SKU: 751907660
Price: 41500.00 USD
Availability: InStock

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<div class="text-bold text-default margin-top-3 col-xs-12 margin-bottom-5">INFINITI Total Ownership Experience!</div><div class="col-xs-12">Every INFINITI Certified Pre-Owned vehicle goes through a 167 point comprehensive vehicle inspection and reconditioning. Only then can it be admitted into the INFINITI Certified Pre-Owned Program. Also included is a free CARFAX® vehicle history report with a 3 year Buy-Back Guarantee (no-registration required), emergency roadside assistance for the duration of the limited warranty, complimentary service courtesy vehicle, and complimentary first year of basic maintenance, We also include a Complimentary 3 month Trial Subscription to SiriusXM Satellite Radio, and offer an available INFINITI Elite Extended Protection Program.</div>

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Certified 2024 INFINITI Q50 Red Sport 400

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Shop, watch video walkarounds and compare prices on INFINITI Q50 Red Sport 400 listings. See Kelley Blue Book pricing to get the best deal. Search from 164 INFINITI Q50 cars for sale, including a Certified 2022 INFINITI Q50 Red Sport 400, a Certified 2024 INFINITI Q50 Red Sport 400, and a New 2024 INFINITI Q50 Red Sport 400 ranging in price from $9,000 to $99,999.

INFINITI Q50 Red Sport 400 for Sale - Kelley Blue Book

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Russ Heaps has produced automotive content for newspapers, magazines, and websites since 1987. Knight-Ridder recognized his contributions in founding and supplying content for the stand-alone auto section in the Boca Raton News with a Knight-Ridder Excellence award nomination in 1990. He began contributing advice and other automotive-related content to Cox Automotive as a contractor in 2010. Cox Automotive brought Russ on board as Senior Editor, Advice for Kelley Blue Book in 2022. Previously, he contributed financial and automotive content for Bankrate.com. He was also managing editor for Auto World and NOPI Street Performance Compact magazines for four years. His work has appeared in the Washington Times, the Miami Herald, the Palm Beach Post, and a host of other newspapers on a syndicated basis. 
Russ also has a deep background in travel as the supervising producer for the syndicated television series Discover America where he also wrote scripts and field-produced episodes. Additionally, he authored travel stories for AAA of the Carolinas Magazine.
He graduated Wittenberg University with a degree in Political Science. His passions are friends, cars, bourbon, and the Pittsburgh Steelers.

Russ Heaps

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$73,500 &amp; up

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2-Line Blurb

140-Character Blurb

If the large luxury sedan segment was a mountain, the 2026 Mercedes-Benz S-Class would be at the summit.

Cons

Power, Ride and Handling

Driving Impressions

There’s nothing lacking in the S 500. It melds 442 horsepower with superb refinement. <a href="https://www.kbb.com/mercedes-benz/">Mercedes-Benz</a> says this model can accelerate from standstill to 60 mph in a brisk 4.5 seconds. We don’t dispute it. To compare, the BMW 740i has 375 hp and hits 60 mph in 5.1 seconds.
However, the authoritative V8 thrust of the 496-hp S 580 seems perfectly right in a large luxury sedan. It will shave 0.2 of a second from the S 500’s sprint time.
We’ve also driven the S 580e plug-in hybrid, which feels so beautifully effortless. We could never tell when its V6 was sliding into or out of operation without looking at the rev counter. The electric motor is perfectly capable of decent freeway speeds and making decisive passing moves without any help from the gasoline side.
Life behind the wheel of a 2026 S-Class is rather wonderful. As that smell of fine leather or the cabin fragrance system wafts gently into your nostrils, the massaging seat kneads your back, your elbows rest on padded areas of yet more leather, and the crystal-clear stereo system plays your favorite tracks, the rest of the world falls into insignificance.
Threading through city streets or dashing down a highway, there’s the same comfort and pretty much the same suppressed level of noise. An air suspension is standard, enhancing comfort, yet also making the car feel more agile than its size suggests. A comprehensive set of driver assistance features is also included.
In our ideal new S-Class, we would also choose the rear-wheel steering system for greater maneuverability. And the E-Active Body Control hydro-pneumatic suspension that reads the road ahead, adjusts the ride quality accordingly, and helps keep the car astonishingly flat through corners.
We review the higher-powered 2026 <a href="https://www.kbb.com/mercedes-benz/mercedes-amg-s-class/">Mercedes-AMG S-Class</a> separately. Likewise, the ultra-luxurious <a href="https://www.kbb.com/mercedes-benz/mercedes-maybach-s-class/">Mercedes-Maybach S-Class.</a>
<h3>Fuel Economy</h3>
The S 500 4Matic achieves 24 mpg in combined city/highway driving. Compare that with the BMW 740i xDrive, which manages 27 mpg combined.
People who can afford a new S-Class aren’t especially worried about fuel bills, but if anyone wanted to reduce their carbon footprint a little, the S 580e plug-in hybrid can travel for an impressive 56 miles on battery power alone. After that, it achieves 23 mpg combined. With a computer-controlled combination of electric and gasoline operation, it feels almost odd to be driving an S-Class and hardly see the fuel gauge move even after a couple of long drives. The comparable BMW 750e xDrive runs for 35 miles in electric mode.
All these engines require premium gasoline.

Elegant Exterior

Exterior

As brave and bold as something like the BMW 7 Series might be, with its avant-garde exterior styling, some buyers are going to be more conservative in their tastes. Over its many generations, the S-Class has always occupied the top spot, and part of the reason why is its design. It manages to convey presence, authority, prestige, and elegance — all at the same time.
This year’s expanded plethora of Manufaktur paint choices should please even the pickiest customer.

FAQs

Our Favorite Features and Tech

Favorite Features

Front seats 
The front seats have rapid heating or cooling, as well as multiple massaging programs — some of which go on for nearly 20 minutes. Even better news, these aren’t optional. They’re standard in every new S-Class luxury sedan.
Augmented reality 
The standard navigation system in the 2026 S-Class can show images of what’s directly ahead, and highlight things like direction signs and street numbers. This is done on the infotainment screen, as well as the optional head-up display.
Hey, Mercedes 
Wake up the onboard digital assistant with these two words, then give a command like “raise the cabin’s temperature by two degrees” or “turn down the volume.” This is another standard feature of the 2026 S-Class.
Powered rear shades 
The rear window and rear passenger windows at each side have shades that go up and down with the touch of a button — also standard.
Burmester 15-speaker/710-watt surround-sound system 
This standard setup is superb — crisp, detailed, and powerful. Or there’s always the optional 30-speaker/1,750-watt 4D upgrade for an even more immersive listening experience.
Soft-closing doors 
Yes, they’re common at this lofty luxury level, but every time we get in the S-Class and the doors shut smoothly behind us, we get a little thrill. They&#8217;re standard across the lineup.
&nbsp;

Interior Sanctum

Interior

Heaven on four wheels. The feel of the leather, the comfort of the seats, the heft of the switchgear, the many tech features, the cabin air ionization and fragrance, the space, the silence. These all collude to create a sumptuous and secure bubble, where occupants can dictate how much of the outside world they want to allow in.
Mercedes-Benz brings only its long-wheelbase S-Class models into the United States, so there’s plenty of legroom for tall passengers sitting in the back. Audi and BMW do the same thing. Every S-Class has the option of two executive rear seats with power-adjustable/heated/massaging seats and heated armrests. We’re mentioning the vast array of Manufaktur interior decor choices again, because there are just so many.
At 12.9 cubic feet, the trunk isn’t that big (similar to a Toyota Corolla’s). Perhaps S-Class owners have their Louis Vuitton luggage transported in a separate vehicle. The S 580e plug-in hybrid’s trunk is even smaller — 8.1 cubic feet — we struggled to get a large suitcase in there.

Is the YMM a Good Vehicle?

Is the YMM Reliable?

KBB Editors' Overview

There can only be one supreme ruler of the flagship sedan realm. It’s this, the S-Class. And it’s occupied that throne for many years and generations. Just like Steven Spielberg really, really knows how to make a film involving sharks, <a href="https://www.kbb.com/mercedes-benz/">Mercedes-Benz</a> is a master of the large luxury car.
Part of that mastery is the painstaking attention to the smallest details. Some of it comes from innovations in technology, especially on the safety front, or often applying them to enhance comfort. Then there’s the ability to power (quietly) along an autobahn with stability and reassurance. There isn’t only one reason why the S-Class rules, and that’s precisely why the S-Class rules.
We’ve logged hundreds of hours driving and evaluating this generation of <a href="https://www.kbb.com/cars/best-luxury-full-size-cars/">luxury full-size sedans</a>, including the Mercedes-Benz S-Class.

Optional Equipment

Pricing - Dynamic

The 2026 Mercedes-Benz S-Class has a starting sticker price of $120,650, with the range-topping S 580 4Matic kicking off at $131,850.
<table style="border-collapse: collapse; width: 100%;">
<tbody>
<tr>
<td style="width: 50%;">S 500 4Matic</td>
<td style="width: 50%;">$120,650</td>
</tr>
<tr>
<td style="width: 50%;">S 580e 4Matic</td>
<td style="width: 50%;">$131,550</td>
</tr>
<tr>
<td style="width: 50%;">S 580 4Matic</td>
<td style="width: 50%;">$131,850</td>
</tr>
</tbody>
</table>
&nbsp;

Pricing - Static

The S 580 4Matic is the most popular variant and one we would recommend for its considerable standard inventory and engine power.
Two main S-Class rivals are the <a href="https://www.kbb.com/bmw/7-series/">BMW 7 Series</a> and <a href="https://www.kbb.com/porsche/panamera/">Porsche Panamera</a>, both with prices beginning below their Mercedes-Benz equivalent. We’re expecting a new-for-2026 <a href="https://www.kbb.com/audi/a8/">Audi A8</a>, which should also begin lower than the S-Class. Same story with the <a href="https://www.kbb.com/lexus/ls/">Lexus LS</a>. The <a href="https://www.kbb.com/genesis/g90/">Genesis G90</a> is also less expensive than the S-Class, yet absolutely worth considering.
Before buying a new S-Class large luxury sedan, check the Kelley Blue Book Fair Purchase Price to know what you should really pay. Resale values should be about average for the class. Recouping more money when selling a vehicle can mean a bigger down payment and lower monthly payments on the next one, if that matters to an S-Class buyer.

Pros

<ul>
<li>Sumptuous interior</li>
<li>Excellent tech</li>
<li>Scores high on the waft-o-meter</li>
</ul>

Quick New

<ul>
<li>Exclusive trim</li>
<li>Executive Rear Seat package tweaks</li>
<li>Edition 580 package</li>
</ul>

Safety

Standard Equipment

Trims

Under the Hood

Before we get into the actual engines, a brief word about the mild hybrid system used in the S 500 and S 580 drivetrains. An electric motor enables a smooth action to the fuel-saving engine stop/restart function, as well as providing brief boosts of 21 hp and 184 lb-ft of torque.
An electrical compressor is part of the setup. It’s like a supercharger, working in tandem with the turbocharger(s). And when the optional E-Active Body Control hydro-pneumatic suspension is on board, the mild hybrid system also powers this. It’s typical of Mercedes-Benz to corral technology in the pursuit of comfort and refinement.
The S 500’s combustion side is a turbocharged 3.0-liter 6-cylinder unit. Output is a perfectly fine 442 hp and 413 lb-ft of torque.
The S 580 drivetrain employs twin turbochargers bolted to a 4.0-liter V8 to make 496 hp and 516 lb-ft of torque. The S 580e is a plug-in hybrid, pairing the 3.0-liter turbo V6/mild hybrid system with an electric motor to create a total of 510 hp.
Every new S-Class has an all-wheel drive (AWD) system (known as 4Matic on Planet Mercedes) and a 9-speed automatic transmission.
<h3>4-Year/50,000-Mile Warranty</h3>
The new-car and powertrain warranty on a 2025 S-Class lasts four years or 50,000 miles, whichever comes first. Roadside assistance is included. This is the usual arrangement in the luxury sector. Plug-in hybrid batteries are covered for six years or 60,000 miles in some states and 10 years or 150,000 miles in others.
<h3>Safety Ratings</h3>
The S-Class hasn’t been crash-tested by any independent agencies. That’s a common thing for such high-end vehicles, but it shouldn’t be a deal-breaker. Mercedes-Benz packs its flagship sedan with an array of comprehensive and often innovative standard safety features, such as the special windshield wiper system that doesn’t mess up vision with indiscriminate splashing all over the glass.

What's new for

There’s been a big equipment shake-up for the 2026 S-Class. A new Exclusive trim comes in below the Pinnacle trim, bringing a heated steering wheel, heated armrests, ventilated/power-adjustable rear seats with memory settings, plus several other convenience features.
All 2026 S-Class variants are eligible for the Executive Rear Seat package, which now heightens (or deepens) the luxury for two occupants, adding folding tables and a temperature-controlled cup holder.
The new Edition 580 package is exclusive to the S 580 4Matic (not the hybrid version) and bundles various features such as a choice of Manufaktur paint finishes, plus posher-than-usual mats and headrests.
The Manufaktur personalization program has gone into overdrive, with more than 50 new paint finishes, along with at least 20 new upholstery choices.

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