VS

BMW 3 Series Saloon vs Mercedes GLA comparison

Compare performance (530 HP vs 421 HP), boot space and price (39900 £ vs 38800 £ ) at a glance. Find out which car is the better choice for you – BMW 3 Series Saloon or Mercedes GLA?

BMW 3 Series Saloon vs Mercedes GLA: Key differences

BMW 3 Series Saloon

  • noticeable more power
  • distinct more efficient
  • noticeable more electric range
  • evident quicker from 0–100 km/h
  • barely noticeable more trunk space

Mercedes GLA

4.6 (3 Reviews)
rate
  • hardly perceptible cheaper
  • barely noticeable lighter

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

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

3 Series Saloon

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Mercedes GLA has a hardly perceptible advantage in terms of price – it starts at 38800 £ , while the BMW 3 Series Saloon costs 39900 £ . That’s a price difference of around 1106 £.

Fuel consumption also shows a difference: BMW 3 Series Saloon manages with 2.40 L and is therefore distinct more efficient than the Mercedes GLA with 2.90 L. The difference is about 0.50 L per 100 km.

As for electric range, the BMW 3 Series Saloon performs noticeable better – achieving up to 101 km, about 27 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 BMW 3 Series Saloon has a noticeable edge – offering 530 HP compared to 421 HP. That’s roughly 109 HP more horsepower.

In acceleration from 0 to 100 km/h, the BMW 3 Series Saloon is evident quicker – completing the sprint in 3.50 s, while the Mercedes GLA takes 4.30 s. That’s about 0.80 s faster.

In terms of top speed, the BMW 3 Series Saloon performs to a small extent better – reaching 250 km/h, while the Mercedes GLA tops out at 210 km/h. The difference is around 40 km/h.

There’s also a difference in torque: BMW 3 Series Saloon pulls evident stronger with 700 Nm compared to 500 Nm. That’s about 200 Nm difference.

3 Series Saloon

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 5 people.

In curb weight, Mercedes GLA is barely noticeable lighter – 1570 kg compared to 1575 kg. The difference is around 5 kg.

In terms of boot space, the BMW 3 Series Saloon offers barely noticeable more room – 480 L compared to 435 L. That’s a difference of about 45 L.

When it comes to payload, Mercedes GLA barely noticeable takes the win – 500 kg compared to 495 kg. That’s a difference of about 5 kg.

Who wins the race in the data check?

The BMW 3 Series Saloon is clearly superior overall 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.

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, …
BMW 3 Series Saloon
Mercedes GLA

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £39,900
3 Series Saloon

BMW 3 Series Saloon

  • Engine Type : Diesel MHEV, Petrol, Petrol MHEV, Plugin Hybrid
  • Transmission : Automatic, Manuel
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 150 - 530 HP
  • Consumption L/100km : 2.4 - 10.1 L
  • Electric Range : 96 - 101 km
details

BMW 3 Series Saloon

The BMW 3 Series saloon is a driver's car in a suit, blending poised handling with a cabin that feels more premium than its practicality suggests. It’s composed enough for daily duties yet playful enough to keep weekend drives interesting, making it a sensible choice for buyers who still want to have fun.

details
P90479606_highRes_the-new-bmw-m340i-xd
P90479563_highRes_the-new-bmw-m340i-xd
P90479608_highRes_the-new-bmw-m340i-xd
P90479582_highRes_the-new-bmw-3-series
P90479626_highRes_the-new-bmw-m340i-xd

Mercedes GLA

4.6 (3 Reviews)
rate

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.

details
20C0047_067
20C0047_071
20C0047_104
20C0047_115

Reviews BMW 3 Series Saloon

Reviews Mercedes GLA

4.6 (3 Reviews)
rate
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
BMW 3 Series Saloon
Mercedes GLA

Costs and Consumption
Price
39900 - 91000 £
Price
38800 - 75300 £
Consumption L/100km
2.4 - 10.1 L
Consumption L/100km
2.9 - 9.5 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
96 - 101 km
Electric Range
74 km
Battery Capacity
19.50 kWh
Battery Capacity
12.90 kWh
co2
54 - 227 g/km
co2
66 - 216 g/km
Fuel tank capacity
40 - 59 L
Fuel tank capacity
35 L

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
4
Doors
5
Curb weight
1575 - 1960 kg
Curb weight
1570 - 1810 kg
Trunk capacity
375 - 480 L
Trunk capacity
385 - 435 L
Length
4713 - 4714 mm
Length
4412 mm
Width
1827 - 1903 mm
Width
1834 - 1849 mm
Height
1440 - 1446 mm
Height
1616 mm
Max trunk capacity
-
Max trunk capacity
1385 L
Payload
405 - 495 kg
Payload
480 - 500 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol, Petrol MHEV, Plugin Hybrid
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel, Petrol
Transmission
Automatic, Manuel
Transmission
Automatic
Transmission Detail
Automatic Gearbox, Manual Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
150 - 530 HP
Power HP
116 - 421 HP
Acceleration 0-100km/h
3.5 - 8.6 s
Acceleration 0-100km/h
4.3 - 11 s
Max Speed
218 - 250 km/h
Max Speed
210 km/h
Torque
250 - 700 Nm
Torque
230 - 500 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
110 - 390 kW
Power kW
85 - 310 kW
Engine capacity
1995 - 2998 cm3
Engine capacity
1332 - 1991 cm3

General
Model Year
2024 - 2025
Model Year
2024 - 2025
CO2 Efficiency Class
D, E, F, G, B
CO2 Efficiency Class
B, E, F, G
Brand
BMW
Brand
Mercedes-Benz

Similar Comparisons

Mercedes EQA
Mercedes GLA
VS
In the battle of compact luxury, the Mercedes EQA and GLA offer distinct advantages that cater to different driving preferences. While the EQA stands out with its electric powertrain and eco-friendly appeal, the GLA retains the versatility and familiar dynamics of a traditional combustion engine. …
Audi Q2
Mercedes GLA
VS
In the competitive compact SUV segment, the Audi Q2 stands out with its youthful design and engaging driving dynamics, appealing to those who prioritize style and performance. Meanwhile, the Mercedes GLA offers a more luxurious experience with its refined interior and advanced technology features, …
Lexus LBX
Mercedes GLA
VS
In the realm of premium compact SUVs, the Lexus LBX and Mercedes GLA both deliver a blend of luxury and performance that caters to discerning buyers. While the LBX emphasizes a smooth and refined ride with its hybrid powertrain, the GLA offers a sportier edge and more dynamic handling. Ultimately, …
Mercedes GLA
VW T-Roc
VS
In the competitive compact SUV segment, the Mercedes GLA stands out with its luxurious interior and advanced technology, appealing to drivers who prioritize comfort and style. In contrast, the VW T-Roc offers a more playful design and offers a practical, user-friendly experience, making it a strong …
BMW X2
Mercedes GLA
VS
In the competitive compact SUV segment, the BMW X2 and Mercedes GLA stand out with their stylish designs and engaging performance. While the X2 offers a sportier driving experience with sharp handling and a distinctive coupe-like silhouette, the GLA impresses with its elegant interior and advanced …
Hyundai Tucson
Mercedes GLA
VS
When comparing the Hyundai Tucson to the Mercedes GLA, it’s clear that each SUV offers distinct advantages tailored to different drivers. The Tucson boasts a spacious interior and a value-driven list of features, making it an excellent choice for families and daily commuters. In contrast, the GLA …
Mercedes CLA Shooting Brake
Mercedes GLA
VS
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 …
Mercedes GLA
Nissan Qashqai
VS
The Mercedes GLA and Nissan Qashqai compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
What drive types are available for the BMW 3 Series Saloon?

The BMW 3 Series Saloon is offered with Rear-Wheel Drive or All-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.