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BMW X3 vs Mercedes GLA comparison

Compare performance (398 HP vs 421 HP), boot space and price (51,700 £ vs 38,800 £ ) at a glance. Find out which car is the better choice for you – BMW X3 or Mercedes GLA?

BMW X3 vs Mercedes GLA: Key differences

BMW X3

4.6 (1 Reviews)
rate
  • only slightly more efficient
  • slightly more electric range
  • markedly more trunk space
details

Mercedes GLA

4.5 (4 Reviews)
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  • visibly cheaper
  • only slightly more power
  • very slightly quicker 0–100 km/h
  • noticeably lighter
details

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

X3

Introduction: The Battle of Compact SUVs - BMW X3 vs. Mercedes GLA

In the world of luxury compact SUVs, the BMW X3 and the Mercedes GLA stand out for their unique blend of style, performance, and innovation. Both vehicles compete vigorously in a market that increasingly emphasizes technology, efficiency, and satisfyingly engaging driving experiences. This article takes an in-depth look at how the BMW X3 and Mercedes GLA measure up in various aspects including performance, efficiency, interior comfort, and cutting-edge technology.

GLA

Performance Prowess: Engines and Specs

When it comes to performance, the BMW X3 offers a range of engine options that emphasize both power and efficiency. With various configurations that include Diesel MHEV, Petrol MHEV, and Plugin Hybrid choices, the X3 boasts power outputs ranging from 184 HP to a staggering 510 HP in the high-performance M version. This SUV achieves 0-100 km/h acceleration times as low as 3.8 seconds and can reach a maximum speed of 250 km/h, providing thrilling performance for enthusiasts.

In comparison, the Mercedes GLA also delivers an impressive lineup of engines. From the 116 HP base model to the 421 HP AMG variant, the GLA has plenty of choices for performance-oriented drivers. Acceleration from 0-100 km/h can be as quick as 4.3 seconds for the AMG model, with a top speed that matches the X3 at 250 km/h. While the GLA may not offer as much high-end power in its base models, its agility and responsiveness keep it competitive.

X3

Efficiency Matters: Fuel Consumption and Emissions

Both vehicles demonstrate advances in fuel efficiency, with the BMW X3 offering consumption figures as low as 2.1 L/100 km in its Plug-in Hybrid options. In contrast, the GLA's most economical engine consumes only 1 L/100 km, making it a solid choice for environmentally conscious consumers. When it comes to CO2 emissions, the GLA maintains an edge in lower emissions across many of its configurations, appealing to buyers looking for sustainability without compromising on luxury.

GLA

Interior Quality and Comfort: A Class Apart

Inside the BMW X3, the focus is on luxury and spaciousness. With seating for up to five and trunk capacities ranging between 450 to 570 Liters, the X3 scores high on practicality. The interior boasts high-quality materials, an intuitive infotainment system, and ample passenger space, making it excellent for family use or road trips.

The Mercedes GLA offers a smaller trunk space, capping out at 435 liters, and while it still provides comfortable seating for five, the interior design reflects a sporty rather than a purely practical approach. The GLA is packed with luxurious features and offers a modern infotainment system that includes cutting-edge driver assistance technologies, maintaining a competitive edge in comfort and capability.

X3

Technological Innovations: Leading the Pack

Both the BMW X3 and Mercedes GLA stand at the forefront of automotive technology. The X3 features BMW's iDrive system, integrating comprehensive navigation, infotainment, and voice-activated controls seamlessly. Notably, its advanced driver-assistance systems enhance safety, providing features like adaptive cruise control, lane-keeping assist, and parking assistance.

The GLA, on the other hand, showcases the Mercedes-Benz User Experience (MBUX), which includes a stunning infotainment display with advanced AI capabilities for personalized interactions. MBUX allows for intuitive voice commands, creating a more engaging driving experience. Additionally, the GLA incorporates advanced safety features that draw admiration across the luxury market.

GLA

Conclusion: Which SUV Reigns Supreme?

Ultimately, choosing between the BMW X3 and Mercedes GLA comes down to personal preferences and what aspects matter most in an SUV. If you prefer performance and power coupled with practicality, the BMW X3 emerges as a fantastic choice. Meanwhile, for those who prioritize cutting-edge technology and a sporty design feel, the Mercedes GLA proves to be an attractive option. Both vehicles excel in their domains, making them worthy competitors in the ever-growing luxury compact SUV segment.

Frequently compared as well

Mercedes B Class
Mercedes GLA
VS
The Mercedes B‑Class is the practical, airy people‑carrier that prioritises space and comfort, while the Mercedes GLA takes the same mechanical smarts and adds SUV looks, higher ride height and a touch more road presence. Pick the B‑Class for family‑friendly sense and efficiency, choose the GLA if …
Mercedes A Class
Mercedes GLA
VS
The Mercedes A‑Class is the sharper, more driver-focused hatch that feels nimble and refined on twisty roads, while the Mercedes GLA trades a bit of agility for SUV practicality with a higher ride height, extra luggage space and a commanding view of the road. Pick the A‑Class for sporty handling, …

Here’s where it gets real: The technical differences in detail

X3

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Mercedes GLA is visibly cheaper – starting at 38,800 £ , while the BMW X3 costs 51,700 £ . That’s a price difference of around 12,849 £.

Fuel consumption also shows a difference: the BMW X3 uses 2.8 L/100km and is only slightly more efficient than the Mercedes GLA with 2.9 L/100km. The difference is about 0.1 L/100km.

As for electric range, the BMW X3 offers slightly more range – reaching up to 88 km, about 14 km more than the Mercedes GLA.

GLA

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mercedes GLA offers only slightly more power – delivering 421 HP compared to 398 HP. That’s roughly 23 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLA is very slightly quicker – completing the sprint in 4.3 s, while the BMW X3 takes 4.6 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the BMW X3 delivers noticeably more torque with 670 Nm compared to 500 Nm. That’s about 170 Nm more.

X3

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes GLA is noticeably lighter – 1,570 kg compared to 1,930 kg. The difference is around 360 kg.

Looking at boot space, the BMW X3 offers markedly more boot space – 570 L compared to 435 L. That’s a difference of about 135 L.

When it comes to payload, the BMW X3 carries somewhat more – 570 kg compared to 500 kg. That’s a difference of about 70 kg.

Who wins the race in the data check?

The BMW X3 stands well ahead of its rival in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £51,700
X3

BMW X3

  • Engine Type : Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 197 - 398 HP
  • Consumption L/100km : 2.8 - 7.7 L/100km
  • Electric Range : 88 km
details
BMW X3
Mercedes GLA

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW X3

The BMW X3 mixes Bavarian poise with everyday practicality, delivering a composed ride and a cabin that feels both premium and lived-in. It’s the sort of SUV that lets you enjoy sporty handling without sacrificing family-friendly space, so you get fun and sense in one neat package.

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Reviews BMW X3

4.6 (1 Reviews)
rate

No reviews yet. Share your experience and help others decide.

Mercedes GLA

The Mercedes GLA blends Mercedes style with compact crossover practicality, looking sharper than its size suggests while still feeling purposeful around town. Inside it serves up premium materials and tech-forward ergonomics, and the composed ride makes it an appealing pick for buyers who want luxury wrapped in a city-friendly package with a wink of adventurous spirit.

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Reviews Mercedes GLA

4.5 (4 Reviews)
rate
Lucien
1 May 2026, 07:12:24

GLA 180 petrol. Ideal for city and highway. Very smooth and quiet. The automatic gearbox is a delight. Average consumption 6.2 L/100 km. Special edition 180 Cyber Edition, leather seats....

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Gutter
24 Feb 2026, 21:53:27

Super nimble, very impressive power from this 1,300cc mild‑hybrid engine — in town, on the road and on the motorway for this 2025 GLA 180 Style AMG... premium interior!

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Serge
16 Jan 2026, 16:09:11

You have to compare like with like — the GLA should be compared to the Q3, not the Q2 as in your study!

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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The Lexus LBX and Mercedes GLA are compact premium crossovers that target urban buyers who want a blend of style, comfort and compact practicality. The LBX emphasizes Lexus refinement and a plush ride, while the GLA leans toward sharper handling, a sportier drive and a more tech-focused cabin.
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In the battle between the Mercedes CLA Shooting Brake and the Mercedes GLA, both models showcase the brand's signature blend of luxury and performance. The CLA Shooting Brake offers a sleek, coupe-like silhouette with added practicality, while the GLA boasts a more robust stance and superior …
BMW 5 Series Touring
BMW X3
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The BMW 5 Series Touring and the BMW X3 pit estate practicality against compact SUV versatility, giving buyers a clear choice between low-slung refinement and higher-riding utility. Choose the 5 Series Touring if you prioritise cargo space, on-road comfort and a more car-like driving feel; pick the …
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BMW X3
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BMW X3
Mercedes GLA

Costs and Consumption
Price
51,700 - 73,000 £
Price
38,800 - 75,300 £
Consumption L/100km
2.8 - 7.7 L/100km
Consumption L/100km
2.9 - 9.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
88 km
Electric Range
74 km
Battery Capacity
-
Battery Capacity
-
co2
64 - 175 g/km
co2
66 - 216 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,930 - 2,140 kg
Curb weight
1,570 - 1,810 kg
Trunk capacity
460 - 570 L
Trunk capacity
385 - 435 L
Length
-
Length
-
Width
1,920 mm
Width
1,834 - 1,849 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
570 kg
Payload
480 - 500 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel, Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
197 - 398 HP
Power HP
116 - 421 HP
Acceleration 0-100km/h
4.6 - 7.8 s
Acceleration 0-100km/h
4.3 - 11 s
Max Speed
-
Max Speed
-
Torque
330 - 670 Nm
Torque
230 - 500 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
145 - 293 kW
Power kW
85 - 310 kW
Engine capacity
1,995 - 2,998 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2,024 - 2,025
Model Year
2025
CO2 Efficiency Class
F, E, B
CO2 Efficiency Class
E, F, B, G
Brand
BMW
Brand
Mercedes-Benz
Is the BMW X3 offered with different drivetrains?

The BMW X3 is offered with All-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.