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Mercedes GLA vs Aston Martin DBX comparison

Compare performance (421 HP vs 727 HP), boot space and price (38,800 £ vs 168,900 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLA or Aston Martin DBX?

Mercedes GLA vs Aston Martin DBX: Key differences

Mercedes GLA

4.5 (4 Reviews)
rate
  • considerably cheaper
  • substantially more efficient
  • significantly lighter
details

Aston Martin DBX

  • substantially more power
  • visibly quicker 0–100 km/h
  • slightly more trunk space
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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

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

GLA

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 considerably cheaper – starting at 38,800 £ , while the Aston Martin DBX costs 168,900 £ . That’s a price difference of around 130,021 £.

Fuel consumption also shows a difference: the Mercedes GLA uses 2.9 L/100km and is substantially more efficient than the Aston Martin DBX with 14.2 L/100km. The difference is about 11.3 L/100km.

DBX

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the Aston Martin DBX offers substantially more power – delivering 727 HP compared to 421 HP. That’s roughly 306 HP more horsepower.

When accelerating from 0 to 100 km/h, the Aston Martin DBX is visibly quicker – completing the sprint in 3.3 s, while the Mercedes GLA takes 4.3 s. That’s about 1 s quicker.

There’s also a difference in torque: the Aston Martin DBX delivers significantly more torque with 900 Nm compared to 500 Nm. That’s about 400 Nm more.

GLA

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 significantly lighter – 1,570 kg compared to 2,320 kg. The difference is around 750 kg.

Looking at boot space, the Aston Martin DBX offers slightly more boot space – 491 L compared to 435 L. That’s a difference of about 56 L.

When it comes to payload, the Aston Martin DBX carries clearly more – 710 kg compared to 500 kg. That’s a difference of about 210 kg.

Who wins the race in the data check?

The Mercedes GLA is decisively ahead 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 £38,800
GLA

Mercedes GLA

  • Engine Type Petrol MHEV, Plugin Hybrid, Diesel, Petrol
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 421 HP
  • Consumption L/100km 2.9 - 9.5 L/100km
  • Electric Range 74 km
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Mercedes GLA
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Mercedes GLA
Aston Martin DBX

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLA

The Mercedes GLA is a compact luxury crossover that brings Mercedes-Benz's refined design and premium cabin materials into a practical, city-friendly package. It combines comfortable ride quality and intuitive tech with poised handling, making it a confident choice for everyday driving and longer journeys.

details
20C0047_067
20C0047_071
20C0047_104
20C0047_115

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

Aston Martin DBX

With the DBX, Aston Martin has wrapped its trademark sports-car drama into a high-riding package that looks like it could sprint off the driveway and into a gala, while the cabin pampers occupants with handcrafted leather and theatrical attention to detail. Behind the wheel it feels like a grand tourer that learned how to tackle country roads, serving up surprising agility for such a stately presence and keeping rivals honest with its rarefied blend of performance and luxury.

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Aston_Martin_DBX707_AMR23_Edition_06

Reviews Aston Martin DBX

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

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Aston Martin DBX

Costs and Consumption
Price
38,800 - 75,300 £
Price
168,900 - 213,400 £
Consumption L/100km
2.9 - 9.5 L/100km
Consumption L/100km
14.2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
74 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
66 - 216 g/km
co2
323 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
1,570 - 1,810 kg
Curb weight
2,320 kg
Trunk capacity
385 - 435 L
Trunk capacity
491 L
Length
-
Length
-
Width
1,834 - 1,849 mm
Width
1,998 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
480 - 500 kg
Payload
710 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel, Petrol
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
116 - 421 HP
Power HP
707 - 727 HP
Acceleration 0-100km/h
4.3 - 11 s
Acceleration 0-100km/h
3.3 s
Max Speed
-
Max Speed
-
Torque
230 - 500 Nm
Torque
900 Nm
Number of Cylinders
4
Number of Cylinders
8
Power kW
85 - 310 kW
Power kW
520 - 535 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
3,982 cm3

General
Model Year
2025
Model Year
2,022 - 2,025
CO2 Efficiency Class
E, F, B, G
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
Aston Martin
Is the Mercedes GLA offered with different drivetrains?

The Mercedes GLA is available as Front-Wheel Drive or 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.