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

Compare 2020 Mercedes-Benz S-Class Trims

The S-Class lineup offers a blend of luxury and performance, with options ranging from the budget-friendly S 450 to the powerful AMG 63.

• Starting at $32,592
• 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.

Missing data displayed as "—".

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: $32,592 (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: $34,889 (updated weekly)
• MPG/MPGe: 18 city / 28 hwy
• Inventory: 17 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: $38,357 (updated weekly)
• MPG/MPGe: 17 city / 27 hwy
• Inventory: 43 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: $39,639 (updated weekly)
• MPG/MPGe: 17 city / 27 hwy
• Inventory: 41 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 luxury and performance, ready for any driving condition.

• Avg. market price: $72,230 (updated weekly)
• MPG/MPGe: 17 city / 26 hwy
• Inventory: 23 listings — lower availability; may limit negotiating room
• View S AMG 63 4MATIC Sedan AWD listings

Trim Recommendations

Most Popular — S 560 Sedan RWD

With 43 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 Sedan RWD

At $32,592 avg market price — below the lineup median of $38,357 — it's the most accessible entry point.

Browse S 450 Sedan RWD listings

Best for Fuel Economy — S 450 Sedan RWD

With an impressive MPG/MPGe of 19/28, the S 450 Sedan RWD is the most fuel-efficient option in the lineup.

Browse S 450 Sedan RWD listings

These recommendations are based on CarGurus' proprietary market data from October 29, 2026, CarGurus experts' opinions, and generative AI.

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

Prices have softened 10.93% compared to this time last year, making it a favorable time to shop this model year.

There are 572 listings available, which gives you a solid pool of options to compare.

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 its luxurious feel, impressive performance, comfort, and advanced features. The overview also frames it as a flagship luxury sedan that works especially well if you want a polished cabin and a technology-forward full-size sedan. With 33.4% of listings marked as good or great deals, you have a meaningful chance to find attractive pricing.

Is the 2020 Mercedes-Benz S-Class reliable?

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

The user feedback also points to a reliable ownership experience in the sense that owners value its comfort, performance, and advanced features over time. That said, high maintenance costs can still affect the long-term ownership equation for used buyers.

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

At 71.3% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report before you commit, then prioritize a pre-purchase inspection from a shop that knows luxury sedans. Focus on condition details that matter most on a used flagship, including signs of prior bodywork, maintenance consistency, and any evidence of expensive wear items.

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 and still find worthwhile opportunities.

• Deal availability: 33.4% of listings are priced as good or great deals.
• Inventory: There are 572 listings available.
• Price trend: Prices have softened 10.93% compared with last year.
• Clean inventory: 71.3% of listings are accident-free.

If you find a listing below $46,226, 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 $46,226 sits slightly below last year's $51,899.

That softer pricing can help you buy more favorably now, but it also suggests the model has already absorbed some depreciation. If you plan to sell later, the current market trend means your future resale will depend heavily on condition, mileage, and how well the car has been maintained. Strong demand for well-kept examples should help support value, especially for buyers who want a flagship luxury sedan with a premium reputation.

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:

• 33.4% of listings are priced as good or great deals.
• At 71.3% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 10.93% compared with last year.
• Owners rate it 4.9/5 — a strong satisfaction signal.

Consider the 2021 if:

• At $57,780, the 2021 costs more than the current year's $46,226 average.
• The redesign brings a more sophisticated infotainment system and updated powertrains.

The bottom line: You should lean toward the 2020 if you want the stronger value proposition and are comfortable shopping carefully for condition and history. If you want the newer redesign and can stretch your budget, the 2021 is the better upgrade path; if price matters most, the 2020 is the smarter buy.

How does the 2020 Mercedes-Benz S-Class compare to the 2020 BMW 7 Series?

These recommendations are based on CarGurus' proprietary market data from October 27, 2026, CarGurus experts' opinions, and generative AI.