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 496 listings available, which gives you a reasonable amount of inventory to compare before you buy.

If you find a listing below $20,858.50, 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 from owners, which points to strong shopper satisfaction. The expert rating is 8.5/10.

The model scores 10/10 across Form and function, Technology, and Safety.

Owners repeatedly praise its impressive technology, spaciousness, and fun-to-drive character, along with its premium feel and versatility. The main trade-offs are that the brakes are lacking and the features you may want can push the price up significantly.

That fits the GLB’s role as a small luxury SUV that prioritizes utility and everyday usefulness over pure style or performance. With 34.5% of listings priced as good or great deals, you have some room to shop selectively.

Is the 2020 Mercedes-Benz GLB reliable?

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

The owner feedback points to a reliable, dependable, and trouble-free ownership experience for many shoppers, with praise for its premium features and versatility. The expert evaluation also emphasizes that the GLB’s advanced driver-assistance and collision-avoidance systems operate with accuracy and refinement, which supports confidence in day-to-day use.

The ownership picture is helped by the fact that emergency call service is free for as long as you own the GLB. For used buyers, the main long-term risk is that higher-option examples can be expensive to keep up if you want the nicer features and packages.

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

Accident-free inventory is solid at 81.7% — always verify the vehicle history report.

You should still check the vehicle history report carefully and prioritize a pre-purchase inspection, especially if the SUV has higher mileage or a long option list. Focus on overall condition, because the GLB’s appeal depends heavily on how well its premium features and interior materials have held up. If you’re shopping a used example, make sure the equipment you want is actually present, since desirable options can change the ownership experience a lot.

Key things to evaluate:

• Trim level: The base setup includes standard screens and core luxury features, while the upgraded package replaces the smaller displays with twin 10.25-inch screens and adds blind-spot warning plus keyless entry and engine start.
• Powertrain: The GLB uses a turbocharged 2.0-liter four-cylinder with 221 horsepower and 258 lb-ft of torque, paired with an eight-speed dual-clutch automatic; front-wheel drive is standard and 4Matic AWD is available.
• Safety package: The standard suite includes driver monitoring, a backup camera, forward collision warning with pedestrian detection, automatic emergency braking, and Pre-Safe front collision preparation. The optional Driver Assistance Package adds adaptive cruise control, lane-centering assistance, evasive steering assistance, and automatic emergency stop assistance.
• Infotainment: Standard MBUX includes Android Auto and Apple CarPlay, and the available upgrade brings twin 10.25-inch displays. The system also offers natural voice recognition, and navigation with augmented video is available.
• Fuel efficiency: The test vehicle returned 21.4 mpg on the testing loop, versus an expected 26-mpg EPA estimate.

Which 2020 Mercedes-Benz GLB trim should I buy?

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

Here's the short version:

• Base trim: The GLB 250 gives you the core package, but you’ll want to watch for the smaller standard screens and the absence of some desirable convenience and safety upgrades.
• Sweet-spot trim: The GLB 250 4Matic is the better all-around pick if you want the added traction of AWD without moving into a more expensive, heavily optioned build.
• Premium/top trim: A well-optioned GLB 250 4Matic with the Premium Package and Multimedia Package is the most satisfying version if you value the twin 10.25-inch displays, blind-spot warning, keyless entry, and navigation with augmented video.

The optional Driver Assistance Package is the safety-package 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 market for selective buyers, so it pays to compare listings carefully and move quickly on strong examples.

• Deal availability: 34.5% of listings are priced as good or great deals.
• Inventory: There are 496 listings available.
• Price trend: Prices have softened 11.36% compared with last year.
• Clean inventory: 81.7% of listings are accident-free.

If you find a listing below $20,858.50, 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 $21,032 sits slightly below last year's $23,729.

That price movement suggests the GLB has become more approachable for used buyers, which can help support demand if you decide to sell later. A softer market today can also mean your entry price is more favorable than it was a year ago. If you buy well and keep the vehicle in strong condition, you may be better positioned when it’s time to trade or sell.

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.

Several safety features are standard on the Mercedes-Benz GLB. You get a driver monitoring system, a backup camera, forward collision warning with pedestrian detection, automatic emergency braking, and a Pre-Safe front collision preparation system. Emergency call service is also standard and is free for as long as you own the GLB.

The optional Driver Assistance Package adds adaptive cruise control, lane-centering assistance, evasive steering assistance, and automatic emergency stop assistance. It also enhances Pre-Safe with rear-impact preparation and protection against ear damage at the moment of impact.

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:

• 34.5% of listings are priced as good or great deals.
• Accident-free inventory is solid at 81.7% — 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 emphasizes utility, technology, and practicality over style and performance.

Consider the 2021 if:

• At $23,840, the 2021 costs more than the current year's $21,032 average.
• It adds an optional third row for seven-passenger flexibility.

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

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