Used 2018 Mercedes-Benz C-Class for Sale near Illinois

How much does the 2018 Mercedes-Benz C-Class cost?

Prices have softened 7.41% compared to this time last year, making it a favorable time to shop this model year.

There are 1,995 listings available, which suggests solid inventory for shoppers comparing options.

Is the 2018 Mercedes-Benz C-Class a good car?

Yes — the 4.67/5 user rating points to strong owner satisfaction. Owners consistently praise the luxurious interior, stylish design, and impressive performance, with many highlighting the power and handling, especially in sport mode. The 2018 C-Class also fits well if you want a compact luxury sedan with a premium cabin and modern tech, though the back seat can feel cramped for passengers. With 32.8% of listings marked as good or great deals, you have a decent chance of finding a competitive offer.

Is the 2018 Mercedes-Benz C-Class reliable?

Owners rate it 4.67/5, a strong signal of long-term satisfaction.

The owner feedback also points to a dependable ownership experience, with praise centered on the car’s overall quality and the kind of trouble-free feel buyers want from a luxury sedan. That said, some owners mention ride comfort concerns tied to tire choices, so condition and maintenance history matter. For used buyers, the main long-term ownership risk is less about the basic appeal of the car and more about how well a specific example has been maintained.

What should I look for when buying a used 2018 Mercedes-Benz C-Class?

At 57.7% 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 pre-purchase inspection that focuses on suspension, tires, and any signs of uneven wear or repair quality. Because some owners mention ride comfort issues, pay close attention to how the car feels on rough pavement and whether the cabin shows signs of hard use.

Is now a good time to buy a used 2018 Mercedes-Benz C-Class?

This looks like a moderate, selective buyer’s market, so you can be choosy if you shop carefully.

• Deal availability: 32.8% of listings are priced as good or great deals.
• Inventory: There are 1,995 listings available.
• Price trend: Prices have softened 7.41% compared with last year.
• Clean inventory: 57.7% of listings are accident-free.

If you find a listing below $18,653, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 Mercedes-Benz C-Class's resale value?

The current average of $18,658 sits slightly below last year's $20,151.

That price movement suggests the market has cooled, which can help you buy more confidently now but may also limit near-term upside if you plan to sell soon. If you keep the car in strong condition and maintain it well, you can help protect value better than the average listing. Demand should remain supported by the model’s luxury appeal and broad owner satisfaction.

Vehicles with strong owner satisfaction ratings, like this model year's 4.67/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 Mercedes-Benz C-Class or consider a different year?

If you're weighing the 2018 against nearby model years, here's how to think about it:

Choose the 2018 if:

• 32.8% of listings are priced as good or great deals.
• At 57.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 7.41% compared with last year.
• Owners rate it 4.67/5 — a strong satisfaction signal.

Consider the 2017 if:

• At $17,638, the 2017 costs less than the current year's $18,658 average.
• It offers a balanced mix of comfort, performance, and everyday livability.

The bottom line:
Choose the 2018 if you want the stronger current-market mix of price, inventory, and owner satisfaction. If you’re more price-sensitive, the 2017 is the better path because it costs less while keeping much of the same core appeal.

These recommendations are based on CarGurus' proprietary market data from September 15, 2026, CarGurus experts' opinions, and generative AI.