Used 2020 Mercedes-Benz S-Class for Sale near Illinois

Compare 2020 Mercedes-Benz S-Class Trims

The S-Class lineup offers a range of luxury options, from the value-focused S 450 to the performance-oriented AMG 63, catering to diverse preferences.

• Starting at $33,435
• Best MPG/MPGe: 19 city / 28 hwy
• Most Popular: S 560 Sedan RWD

Trim Overview

Prices updated weekly from CarGurus listings.

Quick Compare Table

Listing prices sourced from CarGurus — updated weekly. OEM specs from manufacturer data.

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Trim Deep Dives

S 450 Sedan RWD — "Who It's For"

The S 450 Sedan RWD is the pick for shoppers who want luxury features without the higher price tag of the more powerful trims.

• Avg. market price: $35,017 (updated weekly)
• MPG/MPGe: 19 city / 28 hwy
• Inventory: 15 listings — lower availability; may limit negotiating room
• View S 450 Sedan RWD listings

S 450 4MATIC Sedan AWD — "Who It's For"

The S 450 4MATIC Sedan AWD is the pick for shoppers who want all-wheel drive without paying for the higher trims.

• Avg. market price: $33,435 (updated weekly)
• MPG/MPGe: 18 city / 28 hwy
• Inventory: 13 listings — lower availability; may limit negotiating room
• View S 450 4MATIC Sedan AWD listings

S 560 Sedan RWD — "Who It's For"

The S 560 Sedan RWD is the pick for shoppers who want a blend of luxury and performance without going for the top-tier AMG model.

• Avg. market price: $39,396 (updated weekly)
• MPG/MPGe: 17 city / 27 hwy
• Inventory: 49 listings — lower availability; may limit negotiating room
• View S 560 Sedan RWD listings

S 560 4MATIC Sedan AWD — "Who It's For"

The S 560 4MATIC Sedan AWD is the pick for shoppers who want sporty performance with the added benefit of all-wheel drive.

• Avg. market price: $41,682 (updated weekly)
• MPG/MPGe: 17 city / 27 hwy
• Inventory: 28 listings — lower availability; may limit negotiating room
• View S 560 4MATIC Sedan AWD listings

S AMG 63 4MATIC Sedan AWD — "Who It's For"

The S AMG 63 4MATIC Sedan AWD is the pick for shoppers who want the ultimate in performance and luxury without compromise.

• Avg. market price: $76,784 (updated weekly)
• MPG/MPGe: 17 city / 26 hwy
• Inventory: 24 listings — lower availability; may limit negotiating room
• View S AMG 63 4MATIC Sedan AWD listings

Trim Recommendations

Most Popular — S 560 Sedan RWD

With 49 active listings, the S 560 Sedan RWD is the clear volume leader in the lineup.

Browse S 560 Sedan RWD listings

Best Budget Option — S 450 4MATIC Sedan AWD

At $33,435 avg market price — below the lineup median of $39,396 — it's the most accessible entry point.

Browse S 450 4MATIC Sedan AWD listings

Best for Fuel Economy — S 450 Sedan RWD

The S 450 Sedan RWD offers the best fuel economy in the lineup with 19/28 MPG.

Browse S 450 Sedan RWD listings

These recommendations are based on CarGurus' proprietary market data from September 2, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2020 Mercedes-Benz S-Class cost?

Prices have softened 11.17% compared to this time last year, making it a favorable time to shop this model year.

There are 602 listings available, which suggests you have a workable amount of inventory to compare.

If you find a listing below $46,807.77, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2020 Mercedes-Benz S-Class a good car?

Yes — the 2020 Mercedes-Benz S-Class earns a 4.9/5 user rating, which points to very strong owner satisfaction.

Owners consistently praise the luxurious feel, the impressive performance, and the advanced features. The comfort of the ride is another recurring strength, and that fits a car built to serve as a flagship luxury sedan with technology and engineering at the center of the experience.

If you want a sedan that emphasizes comfort, high-end tech, and strong power, this model year fits that use case well. The market also shows 30.6% of listings as good or great deals, which gives you some room to shop selectively.

Is the 2020 Mercedes-Benz S-Class reliable?

Owners rate it 4.9/5, a strong signal of long-term satisfaction.

The owner feedback also points to a dependable ownership experience in the sense that many drivers feel confident in the car’s comfort, performance, and overall quality over time. That said, some owners note that maintenance costs can be high, so long-term ownership risk is less about basic satisfaction and more about keeping up with premium upkeep.

What should I look for when buying a used 2020 Mercedes-Benz S-Class?

At 73.3% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report so you can separate clean examples from cars with prior damage. After that, prioritize a thorough pre-purchase inspection, especially on a luxury sedan where repair costs can escalate quickly.

Focus your condition check on signs of past bodywork, uneven panel gaps, and any evidence of deferred maintenance. Because this model is expensive to own, the best used example is usually the one with the cleanest history and the most consistent service record.

Is now a good time to buy a used 2020 Mercedes-Benz S-Class?

This looks like a moderate, selective buyer’s market, so you can shop carefully without expecting every listing to be a bargain.

• Deal availability: 30.6% of listings are priced as good or great deals.
• Inventory: There are 602 listings available.
• Price trend: Prices have softened 11.17% compared with last year.
• Clean inventory: 73.3% of listings are accident-free.

If you find a listing below $46,807.77, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 Mercedes-Benz S-Class's resale value?

The current average of $47,605 sits slightly below last year's $53,590.

That decline suggests the market has already adjusted downward, which can help you as a buyer but may limit upside if you plan to resell soon. For a future seller, the key takeaway is that pricing discipline matters: buying well now gives you a better chance of protecting value later.

Strong owner satisfaction can help support demand when it is time to sell, especially for a flagship luxury sedan with broad appeal. Vehicles with strong owner satisfaction ratings, like this model year's 4.9/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2020 Mercedes-Benz S-Class or consider a different year?

If you're weighing the 2020 against nearby model years, here's how to think about it:

Choose the 2020 if:

• 30.6% of listings are priced as good or great deals.
• At 73.3% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 11.17% compared with last year.
• Owners rate it 4.9/5 — a strong satisfaction signal.

Consider the 2021 if:

• At $59,567, the 2021 costs more than the current year's $47,605 average.
• It brings a redesigned flagship with more sophisticated infotainment and updated powertrains.

The bottom line: If you want the better value play, the 2020 is the stronger starting point because pricing has eased and inventory is available. If you’re willing to pay more for the newer redesign and updated tech, the 2021 is the better secondary path for buyers who prioritize the latest version over savings.

These recommendations are based on CarGurus' proprietary market data from September 4, 2026, CarGurus experts' opinions, and generative AI.