Mercedes-Benz GLA vs. GLB

2021 Mercedes-Benz GLA vs. 2021 Mercedes-Benz GLB

2021 Mercedes-Benz GLA


2021 Mercedes-Benz GLB


Starting MSRP

8-speed automatic


8-speed automatic
5-7 (optional)

Seating Capacity

5-7 (optional)
41 inches

Front Legroom

41.1 inches
38 inches

Rear Legroom

38.1 inches

Mercedes-Benz User Experience (MBUX)


Have you been thinking about trading in your vehicle for a new luxury SUV? The Mercedes-Benz lineup has compelling options for solo commuters and growing families alike, but shoppers who are looking for something on the smaller side would do well to compare the 2021 Mercedes-Benz GLA vs. GLB. Both can seat five passengers standard or up to seven with an optional third row, but there are some key differences you’ll want to note before making a decision. Learn more with Mercedes-Benz of San Antonio below, then visit us for a test drive on your way home from San Antonio!

GLA vs. GLB: Starting MSRPs

Will a new GLA for sale or a new GLB better accommodate your budget? The GLA is the most-entry level Mercedes-Benz SUV, so it comes with a lower starting price than the GLB:

  • 2021 Mercedes-Benz GLA SUV Starting Price: $36,230 MSRP*
  • 2021 Mercedes-Benz GLB SUV Starting Price: $38,050 MSRP*

No matter which vehicle captures your heart, there are ongoing offers and incentives from Mercedes-Benz that can help you save!

Mercedes-Benz GLA vs. GLB: Base Engine & Performance

How does performance compare in the GLA vs. GLB? Either way you’re in for an exciting commute to Alamo Heights, and this decision shouldn’t be too difficult, because they share the same base engine! Check out the specs for more information:

Standard Mercedes-Benz GLA & GLB Engine Specs

  • 2.0L inline-4 turbo
  • 221 hp / 258 lb-ft of torque
  • 8-speed automatic transmission

Want enhanced traction in Shavano Park? Both the GLA and GLB offer 4MATIC® trim levels that will have you feeling confident in any condition. Or, if you want to take engine performance to the next level, consider checking out the AMG® line for precision-crafted excellence.

GLA vs. GLB: Passenger Space

Do you value passenger space or cargo space more in an SUV? The GLA and GLB both come with standard two-row seating for five passengers, but both SUVs can be upgraded with a third-row seat to take your passenger capacity up to seven! In terms of legroom, these SUVs fall just short of equal:

2021 Mercedes-Benz GLA Passenger Dimensions

  • Front legroom: 41.0 inches
  • Rear legroom: 38.0 inches

2021 Mercedes-Benz GLB Passenger Dimensions

  • Front legroom: 41.1 inches
  • Rear legroom: 38.1 inches

Mercedes-Benz GLA vs. GLB: Cargo Space

If you prefer to stick to a two-row build in order to have more cargo space, how much room does each SUV give you to work with? Whether you’re gearing up for a road trip or just picking up groceries, the GLA interior or GLB interior can accommodate.

  • 2021 Mercedes-Benz GLA Max. Cargo Volume – 50.5 cubic feet
  • 2021 Mercedes-Benz GLB Max. Cargo Volume – 62.0 cubic feet

GLA vs. GLB: Interior Luxuries

If you’re going to compare luxury SUVs like the Mercedes-Benz GLA vs. GLB, you must take a moment to review their interior feature offerings. As it turns out, their baseline suites of features are overall very similar! Both SUVs can enhance your trips to Shavano Park with:

  • Power-adjustable driver seat
  • Driver seat memory
  • Heated front seats
  • Adjustable steering column
  • Power liftgate

Compare the GLA vs. GLB in San Antonio

When you’re ready to compare the Mercedes-Benz GLA vs. GLB from behind the wheel, schedule a test drive at Mercedes-Benz of San Antonio. Our team is here to get to know you and your driving needs, so we can help you narrow down the SUV that’s the right fit for your life on the go!

*Base MSRP excludes transportation and handling charges, destination charges, taxes, title, registration, preparation and documentary fees, tags, labor and installation charges, insurance, and optional equipment, products, packages and accessories. Options, model availability and actual dealer price may vary. See dealer for details, costs and terms

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