How much does the 2020 Mercedes-Benz GLB cost?

Prices have softened 11.36% compared to this time last year, making it a favorable time to shop this model year.

There are 486 listings available, which gives you a meaningful amount of inventory to compare.

If you find a listing below $20,861.27, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2020 Mercedes-Benz GLB a good car?

Generally — 4.14/5 is a strong user rating for this model year, and the expert score is 8.5/10. The model scores 10/10 across Form and function, Technology, and Safety.

Owners consistently praise its premium features, great design, and versatility, and they also like its comfortable size. The overview matches that appeal by framing the GLB as a small luxury SUV that prioritizes utility and everyday usefulness, with a practical cabin and a distinctive place between Mercedes-Benz’s smaller and larger crossovers.

The trade-offs are real, though: the expert review calls out lacking brakes and notes that desirable features can push the price up significantly. Even so, the market shows 28.2% good or great deals, which suggests there are still some attractive opportunities if you shop carefully.

Is the 2020 Mercedes-Benz GLB reliable?

Owners rate it 4.14/5, a solid signal of long-term satisfaction.

The owner summary points to a vehicle that feels premium, versatile, and generally well liked over time, while also suggesting it can be comfortable and easy to live with. The expert review adds to that impression by describing the GLB as a model that makes you feel special behind the wheel and by emphasizing its refined, well-executed character.

On the dependability side, the expert review says the advanced driver-assistance systems operate with accuracy and refinement, which is a good sign for day-to-day confidence. The cost-effectiveness discussion also notes that the GLB can be optioned selectively, which may help you avoid overpaying for features you do not need.

For a used buyer, the main long-term ownership risk is that higher-spec examples can become expensive to maintain and repair if they were heavily optioned or poorly cared for.

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

Accident-free inventory is solid at 82.5% — always verify the vehicle history report.

You should still run a history report on any candidate, even if the listing looks clean at first glance. Prioritize a pre-purchase inspection, especially if the vehicle has larger wheels, premium packages, or other costly options that can affect ride quality and repair exposure. Focus on overall condition, because the GLB’s appeal depends heavily on how well the cabin, electronics, and mechanicals have been maintained.

Key things to evaluate:

• Trim level: The GLB 250 is the standard model, and the GLB 250 4Matic adds all-wheel drive. The base setup uses standard 7-inch infotainment and instrumentation screens, while the Premium Package upgrades to twin 10.25-inch displays and adds blind-spot warning plus keyless entry and engine start.
• Powertrain: Both versions use a turbocharged 2.0-liter four-cylinder engine with 221 horsepower and 258 lb-ft of torque, paired with an eight-speed dual-clutch automatic transmission. Front-wheel drive is standard, and 4Matic AWD is available.
• Safety package: The standard safety list includes a driver monitoring system, backup camera, forward collision warning with pedestrian detection, automatic emergency braking, and Pre-Safe front collision preparation. The Driver Assistance Package adds adaptive cruise control, lane-centering assistance, evasive steering assistance, automatic emergency stop assistance, and additional Pre-Safe enhancements.
• Infotainment: The GLB uses Mercedes-Benz User Experience with Apple CarPlay and Android Auto. The standard setup has 7-inch screens, while the Premium Package brings twin 10.25-inch displays under one piece of glass. Navigation with augmented video is available, and the system is known for natural voice recognition.
• Fuel efficiency: The expert test loop returned 21.4 mpg, while the EPA estimate cited in the review is 26 mpg.

Which 2020 Mercedes-Benz GLB trim should I buy?

The 2020 Mercedes-Benz GLB is offered in 2 trim levels: GLB 250 and GLB 250 4Matic.

Here's the short version:

• GLB 250: This is the value play if you want the GLB’s core strengths at the lowest entry point. You still get the turbocharged 2.0-liter engine, the practical cabin, and the standard safety equipment, but you’ll want to budget for the Premium Package if you care about the larger twin screens and added convenience features.
• GLB 250 4Matic: Choose this if you want all-wheel drive and the added traction that comes with it. It keeps the same engine and core equipment, but the 4Matic setup better suits you if you expect to drive in poor weather or want the more secure feel of AWD.

The Driver Assistance Package is the key safety upgrade to look for if you want the most advanced driver aids.

Is now a good time to buy a used 2020 Mercedes-Benz GLB?

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

• Deal availability: 28.2% of listings are priced as good or great deals.
• Inventory: There are 486 listings available.
• Price trend: Prices have softened 11.36% compared with last year.
• Clean inventory: 82.5% of listings are accident-free.

If you find a listing below $20,861.27, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2020 Mercedes-Benz GLB's resale value?

The current average of $20,977 sits slightly below last year's $23,666.

That price movement suggests the GLB has already absorbed a meaningful amount of depreciation, which can help future sellers if they buy at the right price. If you purchase near the lower end of the current range, you may have less downside left than someone who paid closer to last year’s average.

The market also shows that demand is still supported by the GLB’s practical layout and premium appeal. Well-kept examples with desirable equipment should remain easier to move than neglected ones.

Vehicles with solid owner satisfaction ratings, like this model year's 4.14/5, tend to retain buyer demand, which supports resale value over time.

Is the 2020 Mercedes-Benz GLB safe?

It earns a 10/10 safety score from our experts.

The GLB comes standard with a driver monitoring system, backup camera, forward collision warning with pedestrian detection, automatic emergency braking, and Pre-Safe front collision preparation. Emergency call service is also standard and free for as long as you own the vehicle.

The available Driver Assistance Package adds adaptive cruise control, lane-centering assistance, evasive steering assistance, automatic emergency stop assistance, and extra Pre-Safe enhancements. Second-row side-impact airbags and blind-spot monitoring with Exit Warning Assist are also available.

One important caveat is that crash-test ratings were not available at the time of the review, so you should lean more heavily on the standard equipment list and any available package content when evaluating a used example.

Should I buy a 2020 Mercedes-Benz GLB 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:

• 28.2% of listings are priced as good or great deals.
• Accident-free inventory is solid at 82.5% — always verify the vehicle history report.
• Price trend: Prices have softened 11.36% compared with last year.
• Owners rate it 4.14/5 — a solid satisfaction signal.
• The 2020 GLB stands out for its practical packaging, impressive technology, and engaging driving character.

Consider the 2021 if:

• At $23,726, the 2021 costs more than the current year's $20,977 average.
• It adds an optional third row for seven-passenger seating.

The bottom line: If you want the better value today, the 2020 is the smarter starting point because it combines a lower average price with strong owner satisfaction and broad practicality. If you need extra seating flexibility and are willing to pay more, the 2021 is the better fit.

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