Is Mercedes S Class Reliable? Let’s Find Out

Is Mercedes S Class Reliable – When it comes to luxury cars, the Mercedes-Benz S-Class has long been considered a pinnacle of automotive excellence. Renowned for its opulent features, cutting-edge technology, and sophisticated design, the S-Class stands as a symbol of prestige and sophistication on the road.

But beyond its allure and lavishness, one question looms large for potential buyers and curious car enthusiasts alike: Is the Mercedes S-Class reliable?

Reliability is a paramount concern when investing in any vehicle, but it takes on added significance when considering a high-end luxury car like the Mercedes S-Class.

After all, the cost of maintenance and repairs on luxury vehicles can be substantial.

Is Mercedes S Class Reliable

In this article, we will explore the reliability of the Mercedes S-Class, addressing common concerns, examining historical data, and offering insights to help you make an informed decision.

Is Mercedes S Class Reliable? The Legacy of Mercedes-Benz

Mercedes-Benz, a brand synonymous with quality and innovation, has a storied history dating back to the late 19th century. Over the decades, they have consistently pushed the boundaries of automotive engineering and design.

The S-Class, short for “Sonderklasse” or “Special Class” in German, has been at the forefront of this legacy since its introduction in 1954.

For those seeking the epitome of automotive luxury, the Mercedes-Benz S-Class has always stood as an icon.

It’s the car that defines sophistication and opulence on wheels.

Throughout its rich history, the S-Class has been a pioneer in safety features, comfort, and advanced technology. But what about its reliability?

To answer this, we need to consider various factors that influence a car’s dependability.

Predicted Reliability Scores: A Good Place to Start

When evaluating the reliability of any car, it’s wise to start with objective data. In the case of the 2023 Mercedes-Benz S-Class, it holds a predicted reliability score of 79 out of 100.

Are Mercedes S Class Reliable

According to J.D. Power, a predicted reliability score of 91-100 is considered the Best, 81-90 is Great, 70-80 is Average, and 0-69 is Fair, which is considered below average.

With a score of 79, the S-Class sits comfortably in the “Great” category, signaling that it’s a vehicle with commendable reliability prospects.

Read Also: Mercedes-Benz S-Class Years To Avoid

1. The 2023 S-Class: A Symphony of Luxury and Technology

The latest iteration of the S-Class, released in 2023, continues to uphold the brand’s legacy of offering a serene cabin and impeccable fit and finish. While the ride may be less plush than in previous generations, it remains a testament to Mercedes-Benz’s commitment to luxury.

Under the hood, you have two engine options: a standard 429-hp, 3.0-liter turbo inline-six and an up-level 496-hp, 4.0-liter turbo V8.

Is Mercedes S Class Reliable

Both engines are paired with a nine-speed automatic transmission and feature a 48-volt mild-hybrid system for added efficiency.

One standout feature contributing to the S-Class’s remarkable agility is its rear-wheel steering.

This system turns the wheels in the direction of travel to enhance highway-speed handling and in the opposite direction for improved low-speed maneuverability.

Despite its sizable presence, the S-Class handles corners with finesse, surprising drivers with its nimbleness.

2. The Infotainment Conundrum

While the 2023 S-Class shines in many areas, its infotainment system has been a point of contention. Some users find it complicated to use, and it may take time to become accustomed to its features.

However, it’s worth noting that Mercedes-Benz continually updates its software, addressing user feedback and improving usability over time.

3. Real-World Owner Experiences: A Glimpse into Reliability

Is Mercedes S Class Reliable

To gain a deeper understanding of the Mercedes S-Class’s reliability, we turn to real-world owner experiences. The consensus among many Mercedes S-Class owners is that these vehicles tend to be fairly reliable, particularly when compared to other luxury sedans in a similar price range., for example, suggests that even if you opt for a used Mercedes-Benz S-Class, you’re likely to have a reliable vehicle that doesn’t compromise on high-end features. It’s a testament to the enduring quality of these vehicles. further supports this notion, indicating that S-Class cars from 2007 onwards are generally reliable. However, it’s essential to note that not all model years are created equal.

Read Also: Why Does the Mercedes S Class Depreciate So Much?

Some may have more reliability issues than others, so researching specific model years is crucial.

4. A Love Affair with the S-Class

Many S-Class owners have developed an unwavering affection for their vehicles. One owner shared their experience with a 2007 S550, which has accumulated an impressive 139,000 miles.

Despite buying it used and the vehicle’s previous rough treatment, they’ve managed to maintain it at a reasonable cost.

In their words, driving the S-Class is a luxury experience well worth the investment.

Another owner expressed their satisfaction with a 2017 S 550, emphasizing its reliability and the ultimate luxury it offers.

They subsequently upgraded to the new EQS 580 electric car, underscoring their continued trust in the Mercedes-Benz S-Class line.

5. Maintenance Considerations

Like any luxury vehicle, proper maintenance plays a pivotal role in ensuring the reliability of your Mercedes S-Class.

Following the manufacturer’s recommended maintenance schedule, using genuine Mercedes-Benz parts, and addressing issues promptly are key to preserving the vehicle’s longevity.

6. The Complex World of Electronics

One recurring concern among luxury car owners, including those with S-Class vehicles, is the increasing complexity of electronic systems.

Modern S-Class cars come equipped with over 100 different Electronic Computer Modules, which can lead to intricate and costly repairs when issues arise.

The electronic complexity has contributed to Mercedes’ relatively lower resale value compared to its initial price, making some owners wary of the potential long-term costs.

Read Also: Why Are Mercedes S-Class So Cheap?

7. The Competition and Personal Preferences

When considering the reliability of the Mercedes S-Class, it’s essential to remember that preferences and opinions vary widely among drivers. While the S-Class is undoubtedly a symbol of opulence and performance, it competes with other luxury vehicles in its class, such as the Audi A8 and BMW 7 Series.

Each of these vehicles offers a unique blend of luxury, performance, and reliability, appealing to different sensibilities.

The choice between them ultimately depends on personal preferences, brand loyalty, and individual experiences.

The Least Reliable Mercedes-Benz S-Class

While the modern S-Class shines in reliability, there are specific model years to steer clear of if you wish to avoid potential headaches and financial strain in the future.

The Least Reliable Mercedes-Benz S-Class

Here are some Mercedes-Benz S-Class model years you should be cautious about:

Read Also: Which Mercedes Class is The Best?

  • 1999-2006 Mercedes-Benz S-Class: These early 21st-century models are worth avoiding due to numerous reported issues. They were plagued by problems with suspension, a higher propensity for rust, and various other reliability concerns.
  • 2007 Mercedes-Benz S-Class: This model year garnered substantial complaints related to the transmission, suspension, and risk of overheating. Opting for a different year may save you from potential hassles.
  • 2014 Mercedes-Benz S-Class: Owners of the 2014 S-Class reported problems with the air suspension system, ranging from total failure to leaks. This could lead to costly repairs down the road.


The allure of the S-Class remains a powerful draw for luxury car enthusiasts, offering a compelling blend of performance, opulence, and, yes, reliability.

While certain model years should be approached with caution, diligent maintenance and careful consideration of your specific needs and preferences can help ensure a reliable and enjoyable ownership experience.

If you’re captivated by the allure of the three-pointed star and the promise of an unrivaled luxury experience, the Mercedes S-Class remains an enticing choice.

It may not be without its challenges, particularly in the realm of electronics, but diligent maintenance and careful consideration of model years can mitigate potential issues.

So, is the Mercedes S-Class reliable? The data, along with countless owner testimonials, suggests that the S-Class is a dependable luxury vehicle with a solid reputation for quality and innovation.

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