Used 2017 Mercedes-Benz GLS for Sale near Massachusetts

How much does the 2017 Mercedes-Benz GLS cost?

Prices have softened 9.48% compared to this time last year, making it a favorable time to shop this model year.

There are 704 listings available, which gives you a solid pool of options to compare.

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 impressive power, comfort, and engineering quality, and many also like its stylish design and smooth performance. It fits especially well if you want a luxurious three-row SUV with room for six or seven people and a premium-feeling cabin. With 34.9% of listings marked as good or great deals, you have a decent chance of finding a competitive offer.

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 dependable-feeling engineering, with praise for its comfort, smooth power delivery, and overall quality. For used buyers, the main long-term ownership risk is making sure the vehicle has been maintained well, since a luxury SUV with this much equipment can become costly if deferred maintenance has piled up.

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

At 64.6% 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 confirm accident records, title status, and service history before you go any further. Then prioritize a thorough pre-purchase inspection, especially on the suspension, electronics, and interior features that matter most in a luxury SUV. It also makes sense to focus on overall condition and maintenance consistency, since those factors can matter more than mileage alone on a vehicle like this.

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

This looks like a moderate, selective buyer’s market, so you can shop carefully and still find value if you compare listings closely.

• Deal availability: 34.9% of listings are priced as good or great deals.
• Inventory: There are 704 listings available.
• Price trend: Prices have softened 9.48% compared with last year.
• Clean inventory: 64.6% of listings are accident-free.

If you find a listing below $18,091, 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 $18,133 sits slightly below last year's $20,032.

That price movement suggests the market has already adjusted downward, which can help you buy more confidently now but may also limit short-term upside if you plan to resell soon. If you keep the vehicle in strong condition and maintain it well, you can help protect value, but the recent decline means future appreciation is unlikely. A well-priced purchase today matters because your eventual resale will likely depend on how carefully you bought and how well the SUV was maintained.

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:

• 34.9% of listings are priced as good or great deals.
• At 64.6% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 9.48% compared with last year.
• Owners rate it 4.61/5 — a strong satisfaction signal.

The bottom line: You should lean toward the 2017 if you want the refreshed GLS experience at a lower entry price and you’re willing to shop carefully for condition and history. If you’re especially price-sensitive, a different year may be worth comparing, but the 2017 stands out as the better choice when you want a strong mix of owner satisfaction, current value, and a broad selection of listings.

These recommendations are based on CarGurus' proprietary market data from September 22, 2026, CarGurus experts' opinions, and generative AI.