2027 Mercedes-Benz GLB: New 48V Hybrid, 7 Seats, Superscreen & U.S. Release
The 2027 Mercedes-Benz GLB is an all-new generation of Mercedes' compact luxury SUV, combining available seating for up to seven, a new electrified four-cylinder powertrain, more interior space and a major technology upgrade built around MB.OS and the fourth generation of MBUX.
Mercedes-Benz says the redesigned GLB will reach U.S. dealerships in early 2027. While final U.S. pricing, horsepower and EPA fuel-economy figures are still pending, enough official information is available to show that this is far more than a minor refresh.
| Generation | All-new |
| Powertrain | New M252 four-cylinder with 48V technology |
| Official Horsepower | TBD for GLB |
| Official Torque | TBD for GLB |
| Seating | Up to 7 |
| Drivetrain | Final U.S. configurations TBD |
| Infotainment | MB.OS + fourth-gen MBUX |
| Passenger Display | Available as part of MBUX Superscreen |
| AI Assistant | Google + Microsoft-powered MBUX Virtual Assistant |
| U.S. Release | Early 2027 |
| Starting Price | Not announced |
| EPA MPG | Not announced |
What's New for the 2027 Mercedes-Benz GLB?
Almost everything important changes.
- Completely redesigned exterior
- New-generation compact platform
- Longer wheelbase
- Reworked roofline
- More first- and second-row headroom and legroom
- Available seating for seven
- New M252 four-cylinder engine
- 48-volt electrification
- New rear multi-link suspension
- MB.OS operating system
- Fourth-generation MBUX
- AI-powered MBUX Virtual Assistant
- Available MBUX Superscreen
- New MB.DRIVE assistance systems
New M252 Four-Cylinder Engine
The 2027 GLB introduces Mercedes-Benz's newer M252 four-cylinder gasoline engine.
Mercedes says it uses Miller-cycle combustion and 48-volt technology to improve efficiency and refinement.
The engine uses a compact one-box design with the exhaust system mounted close to the engine, while additional insulation and sealing measures are intended to reduce noise and vibration inside the cabin.
48-Volt Hybrid Technology
The new GLB is electrified, but it is not automatically a plug-in hybrid.
Its 48-volt system is designed to support the gasoline engine during selected driving situations while also improving efficiency and smoothness.
Mercedes has not yet released the final U.S. GLB power output, battery specification or EPA fuel economy.
Why Mercedes Is Not Calling the Final Power Yet
Mercedes currently references 221 hp and 258 lb-ft on its U.S. preview page.
However, the manufacturer explicitly states that these are CLA numbers and that official GLB values are still to be determined.
For that reason, buyers should not assume the production U.S. GLB will carry exactly those numbers.
Up to Seven Seats
One of the features that continues to make the GLB unusual is its available third row.
Mercedes says the 2027 model can seat up to seven occupants.
That separates it from many compact luxury SUVs that remain strictly five-seaters.
Who Is the Third Row Really For?
The GLB is still a compact SUV, so buyers should view the third row as flexibility rather than minivan-level accommodation.
It is likely to be most useful for:
- Children
- Shorter adults on short trips
- Occasional extra passengers
- Families who need seven seats only occasionally
Buyers who regularly carry six or seven adults should still look toward a larger three-row SUV.
Longer Wheelbase
Mercedes says it widened the wheelbase of the new GLB and redesigned the roofline.
The goal is to create more legroom and headroom in the first two rows without turning the GLB into an oversized SUV.
That could make the redesigned model more comfortable for families while preserving its city-friendly proportions.
Panoramic Roof
The cabin uses a large panoramic roof to create a brighter and more open interior environment.
Mercedes also offers an available SKY CONTROL panoramic roof.
MB.OS Is the New Digital Foundation
One of the biggest changes is invisible beneath the surface.
The new GLB runs Mercedes-Benz's MB.OS, the company's next-generation vehicle operating system.
MB.OS serves as the foundation for infotainment, connectivity, driver-assistance functions and other digital systems.
This matters because future GLB ownership will increasingly depend on software quality, updates and digital services—not just mechanical specifications.
Fourth-Generation MBUX
The 2027 GLB receives the fourth generation of Mercedes-Benz User Experience, or MBUX.
It is designed to provide faster interaction, improved personalization and more natural voice control.
AI-Powered MBUX Virtual Assistant
Mercedes says the new MBUX Virtual Assistant uses artificial-intelligence technology from Google and Microsoft.
The aim is to make voice conversations more natural than older command-based systems.
Instead of memorizing rigid phrases, drivers should be able to interact with the system more conversationally.
Available MBUX Superscreen
One of the most visually significant options is the MBUX Superscreen.
The setup adds an additional passenger-side display alongside the main driver and central displays, creating a wide digital surface across much of the dashboard.
This pushes the new GLB's cabin much closer to Mercedes' more expensive models in visual presentation.
Burmester 3D Surround Sound
An available Burmester 3D Surround Sound System is offered with available Dolby Atmos support.
That makes the GLB more appealing to buyers who place a high value on cabin audio quality.
New MB.DRIVE Driver Assistance
Mercedes is also reorganizing its assistance technology under the MB.DRIVE name.
Available systems include:
- MB.DRIVE ASSIST
- MB.DRIVE ASSIST PLUS
- MB.DRIVE PARKING ASSIST
- MB.DRIVE PARKING ASSIST 360
The systems use cameras, radar and other sensors to support the driver in traffic, parking and other situations.
LED Lighting
High-performance LED headlights are standard.
Mercedes also offers an available LED Intelligent Light System for more advanced lighting capability.
AMG Line and Night Package
Buyers wanting a sportier appearance will be able to select available:
- AMG Line
- AMG Line Plus
- Night Package
These appearance packages are expected to give the GLB a more aggressive exterior without requiring a full Mercedes-AMG model.
New Rear Multi-Link Suspension
Mercedes-Benz says the 2027 GLB receives a newly developed rear-axle multi-link suspension.
This should help improve the balance between ride comfort and handling precision.
That matters particularly in a seven-seat-capable compact SUV, where comfort under varying passenger loads is important.
DYNAMIC SELECT
The new GLB includes Mercedes' DYNAMIC SELECT system, allowing the driver to choose different drive settings based on conditions and preferences.
Final U.S. mode availability may vary by configuration.
Will 4MATIC AWD Be Available?
Mercedes has not yet published the complete U.S. trim and drivetrain table for the 2027 GLB.
The outgoing GLB offered 4MATIC all-wheel drive, and Mercedes continues to emphasize all-weather capability across its compact SUV lineup, but the final U.S. 2027 GLB drivetrain combinations should be treated as pending until the manufacturer releases complete specifications.
2027 GLB vs Current GLB
| Area | Current GLB | 2027 GLB |
|---|---|---|
| Design | Older generation | All-new |
| Powertrain | Turbo four-cylinder | New M252 + 48V technology |
| Seats | Up to 7 | Up to 7 |
| Infotainment | Earlier MBUX | Fourth-gen MBUX |
| Vehicle OS | Previous architecture | MB.OS |
| Passenger Display | No Superscreen | Available Superscreen |
| AI Assistant | More limited | Google + Microsoft AI |
2027 GLB vs BMW X1
The BMW X1 is one of the GLB's most natural luxury-SUV rivals.
The key difference is packaging.
The X1 focuses primarily on five-passenger compact-luxury practicality, while the GLB continues to offer optional seven-passenger flexibility.
2027 GLB vs Audi Q3
The Audi Q3 is another premium compact crossover competitor.
Again, the GLB's biggest differentiator is its ability to offer a third row.
Buyers who prioritize five-seat comfort may compare the two directly, while shoppers who occasionally need seven seats have fewer alternatives in this segment.
GLB vs Larger Luxury SUVs
The GLB is not meant to replace larger models such as the GLE.
Its appeal lies in giving buyers some family-SUV flexibility without the footprint, weight or price of a larger luxury crossover.
That makes it especially relevant for buyers living in cities or suburban areas where parking space still matters.
Who Should Wait for the 2027 GLB?
You should consider waiting if:
- You want the newest Mercedes compact-SUV technology
- You occasionally need seven seats
- You value a large digital cockpit
- You want the newer 48V powertrain
- You want MB.OS and next-generation MBUX
- You plan to keep the vehicle for several years
Who Should Consider a Discounted Current GLB?
A discounted outgoing GLB may still make sense if your priority is purchase price rather than having the newest technology.
The older model already offers compact dimensions, available seven-seat packaging and familiar Mercedes luxury features.
If dealers heavily discount remaining inventory, the price difference could become more important than the 2027 model's technology improvements.
What Will the 2027 Mercedes GLB Cost?
Mercedes-Benz has not announced official U.S. pricing.
Because this is a full redesign with substantially upgraded technology, a price increase over the outgoing model would not be surprising, but DriveSpecLab will not publish an estimated MSRP as confirmed fact.
What MPG Will It Get?
Official EPA fuel-economy ratings are also pending.
The new 48V system is intended to improve efficiency, but the final benefit cannot be judged until EPA-certified numbers are released.
When Does the 2027 GLB Go on Sale?
Mercedes-Benz says the all-new GLB is expected in U.S. dealerships in early 2027.
Exact dealer arrival timing may vary by region and configuration.
What Is Still Unconfirmed?
- Final U.S. starting price
- Exact GLB horsepower
- Exact GLB torque
- EPA MPG
- Complete trim lineup
- Final 4MATIC availability by trim
- 0–60 mph performance
- Complete cargo-capacity figures
- Final option-package pricing
DriveSpecLab Take
The all-new 2027 Mercedes-Benz GLB looks more important than a typical compact-luxury SUV redesign.
The GLB's basic formula remains clever: give buyers a relatively compact vehicle while preserving the option of seven seats.
For 2027, Mercedes adds a much more modern digital platform, an electrified four-cylinder engine and a more spacious cabin without abandoning that core practicality.
The biggest reason to wait may actually be MB.OS and fourth-generation MBUX, not horsepower. Software, navigation, voice control and driver-assistance technology will play a much larger role in long-term ownership of this generation.
The available Superscreen and AI-powered assistant also give the GLB a cabin experience closer to Mercedes' larger and more expensive products.
There are still important unknowns, especially price, EPA efficiency and final engine output.
If Mercedes keeps the price reasonably close to the current GLB while retaining seven-seat flexibility, the 2027 model could become one of the most versatile choices in the compact luxury SUV segment.
2027 Mercedes-Benz GLB FAQ
When will the 2027 Mercedes-Benz GLB be available?
Mercedes-Benz says the all-new GLB is expected to reach U.S. dealerships in early 2027.
How much horsepower does the 2027 GLB have?
Mercedes has not yet announced the final GLB output. The 221-hp figure shown on the current preview page is explicitly identified by Mercedes as a CLA reference figure.
Does the 2027 GLB have seven seats?
Yes. Mercedes says seating for up to seven passengers will be available.
Is the 2027 GLB a hybrid?
The new gasoline GLB uses an M252 four-cylinder engine with 48-volt electrification. Final U.S. powertrain specifications are still pending.
Does it have the MBUX Superscreen?
Yes. An MBUX Superscreen is available on the new generation.
Does the 2027 GLB use AI?
Yes. The new MBUX Virtual Assistant integrates AI technology from Google and Microsoft.
How much will the 2027 Mercedes GLB cost?
Official U.S. pricing has not yet been announced.
What MPG will it get?
EPA fuel-economy ratings have not yet been released.
Continue Exploring
Information reflects official Mercedes-Benz USA material available as of October 15, 2026. Final U.S. pricing, GLB-specific horsepower and torque, EPA fuel economy, trim structure and some drivetrain details have not yet been announced. Mercedes' currently displayed 221 hp and 258 lb-ft values are CLA reference figures and are not presented here as final GLB specifications.
