How much does the 2017 Mercedes-Benz GLS cost?

Prices have softened 8.59% compared to this time last year, making it a favorable time to shop this model year.

There are 678 listings available, which suggests you have a reasonable amount of inventory to compare.

If you find a listing below $18,266.60, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2017 Mercedes-Benz GLS a good car?

Yes — the 2017 Mercedes-Benz GLS earns a 4.61/5 user rating, which points to strong owner satisfaction. Owners consistently praise its power, comfort, and engineering quality, and they also highlight its smooth performance and stylish design. For you, that makes it a compelling choice if you want a luxury three-row SUV that emphasizes a refined ride, family usefulness, and a premium feel. With 34.1% of listings marked as good or great deals, you may also find some attractive opportunities if you shop carefully.

Is the 2017 Mercedes-Benz GLS reliable?

Owners rate it 4.61/5, a strong signal of long-term satisfaction.

The owner feedback also points to a dependable-feeling ownership experience, with praise for its engineering quality and smooth, trouble-free performance. That said, used luxury SUVs can carry higher long-term ownership risk if maintenance history is unclear, so you should favor well-documented examples and avoid shortcuts on inspection.

What should I look for when buying a used 2017 Mercedes-Benz GLS?

At 62.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report and confirm whether any reported damage was minor or structural. Then prioritize a pre-purchase inspection so you can evaluate body condition, suspension behavior, electronics, and signs of uneven wear. Because this is a luxury three-row SUV, you should also pay close attention to how well the interior, third row, and convenience features have held up.

Is now a good time to buy a used 2017 Mercedes-Benz GLS?

This is a moderate, selective buyer’s market, so you can shop with some leverage if you stay disciplined.

• Deal availability: 34.1% of listings are priced as good or great deals.
• Inventory: There are 678 listings available.
• Price trend: Prices have softened 8.59% compared with last year.
• Clean inventory: 62.5% of listings are accident-free.

If you find a listing below $18,266.60, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2017 Mercedes-Benz GLS's resale value?

The current average of $18,267 sits slightly below last year's $19,983.

That price movement suggests the market has already adjusted downward, which can help you buy at a more favorable entry point. For a future seller, it also means resale value may depend heavily on condition, mileage, and service history rather than just the badge alone. Well-kept examples should remain easier to move than neglected ones, especially if they present as clean, well-documented luxury SUVs.

Vehicles with strong owner satisfaction ratings, like this model year's 4.61/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2017 Mercedes-Benz GLS or consider a different year?

If you're weighing the 2017 against nearby model years, here's how to think about it:

Choose the 2017 if:

• 34.1% of listings are priced as good or great deals.
• At 62.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 8.59% compared with last year.
• Owners rate it 4.61/5 — a strong satisfaction signal.

The bottom line: If you want a used Mercedes-Benz three-row SUV with strong owner approval and a softer price than a year ago, the 2017 GLS is the primary year to target. If you are especially price-sensitive, focus on the cleanest, best-documented listings and be willing to compare against nearby model years only when the condition or pricing clearly improves the value equation.

These recommendations are based on CarGurus' proprietary market data from August 21, 2026, CarGurus experts' opinions, and generative AI.