How much does the 2017 Mercedes-Benz GLS cost?

Prices have softened 8.11% compared to this time last year, making it a favorable time to shop this model year.

There are 688 listings available, which suggests you have a workable amount of inventory to compare.

If you find a listing below $18,270.65, 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 many also like the smooth performance and upscale design. For you, that makes it a compelling choice if you want a luxury three-row SUV that can handle family duty while still feeling premium. With 27.3% of listings marked as good or great deals, you also have a meaningful chance to find a competitively priced example.

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 character. That said, used luxury SUVs can carry higher long-term ownership risk if maintenance history is uneven, so you should favor well-documented examples and avoid anything with unclear service records.

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

At 63.8% 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, especially for suspension, electronics, and signs of uneven wear that can hint at deferred maintenance. Because this is a luxury three-row SUV, condition matters a lot: a clean, well-kept example is usually the safer buy than a cheaper one with incomplete records.

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

This is a moderate market for selective buyers, so you can shop carefully without feeling rushed.

• Deal availability: 27.3% of listings are priced as good or great deals.
• Inventory: There are 688 listings available.
• Price trend: Prices have softened 8.11% compared with last year.
• Clean inventory: 63.8% of listings are accident-free.

If you find a listing below $18,270.65, 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 $18,322 sits slightly below last year's $19,940.

That price movement suggests the market has already adjusted downward, which can help you as a buyer but may limit upside if you plan to resell soon. If you buy well and keep the vehicle in strong condition, you can reduce the impact of that depreciation. A clean history and solid maintenance record matter more when you want to protect future value.

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:

• 27.3% of listings are priced as good or great deals.
• At 63.8% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 8.11% compared with last year.
• Owners rate it 4.61/5 — a strong satisfaction signal.

The bottom line: You should start with the 2017 if you want the strongest value balance between price, owner satisfaction, and available inventory. If you're especially price-sensitive, keep an eye on the lower end of the market and focus on the cleanest, best-documented examples rather than stretching for the cheapest listing. If you want to compare across nearby years, use condition and history as your main filters, since those will matter more than small year-to-year differences in this segment.

These recommendations are based on CarGurus' proprietary market data from August 28, 2026, CarGurus experts' opinions, and generative AI.