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BMW X3 vs Mercedes B Class – Differences & prices compared
Both models have their strengths – but which one suits you more?
Compare performance, efficiency, price and space directly: BMW X3 or Mercedes B Class?
X3
@ BMW Group Press
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 B Class has a clearly advantage in terms of price – it starts at 33100 £, while the BMW X3 costs 51300 £. That’s a price difference of around 18128 £.
Fuel consumption also shows a difference: Mercedes B Class manages with 2.50 L and is therefore a bit more efficient than the BMW X3 with 2.80 L. The difference is about 0.30 L per 100 km.
As for range, the BMW X3 performs hardly perceptible better – achieving up to 88 km, about 5 km more than the Mercedes B Class.
B Class
@ Mercedes-Benz Group Media
Engine and Performance:
Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.
When it comes to engine power, the BMW X3 has a convincingly edge – offering 398 HP compared to 238 HP. That’s roughly 160 HP more horsepower.
In acceleration from 0 to 100 km/h, the BMW X3 is significantly quicker – completing the sprint in 4.60 s, while the Mercedes B Class takes 6.50 s. That’s about 1.90 s faster.
There’s no difference in top speed – both reach 250 km/h.
There’s also a difference in torque: BMW X3 pulls noticeable stronger with 670 Nm compared to 450 Nm. That’s about 220 Nm difference.
X3
@ BMW Group Press
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 curb weight, Mercedes B Class is evident lighter – 1405 kg compared to 1930 kg. The difference is around 525 kg.
In terms of boot space, the BMW X3 offers evident more room – 570 L compared to 455 L. That’s a difference of about 115 L.
In maximum load capacity, the BMW X3 performs slight better – up to 1700 L, which is about 160 L more than the Mercedes B Class.
When it comes to payload, BMW X3 minimal takes the win – 570 kg compared to 550 kg. That’s a difference of about 20 kg.
Who wins the race?
The BMW X3 proves to be dominates this comparison and therefore becomes our DriveDuel Champion!
BMW X3 is the better all-rounder in this comparison.
from about £51,300
@ BMW Group Press
BMW X3
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.
details
@ BMW Group Press
@ BMW Group Press
@ BMW Group Press
@ BMW Group Press
@ BMW Group Press
Mercedes B Class
The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.
details
@ Mercedes-Benz Group Media
@ Mercedes-Benz Group Media
@ Mercedes-Benz Group Media
@ Mercedes-Benz Group Media
@ Mercedes-Benz Group Media
BMW X3
Mercedes B Class
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@ BMW Group Press
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@ Mercedes-Benz Group Media
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Costs and Consumption |
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|---|---|
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Price
51300 - 72400 £
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Price
33100 - 52500 £
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Consumption L/100km
2.8 - 7.7 L
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Consumption L/100km
2.5 - 6.9 L
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Consumption kWh/100km
-
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Consumption kWh/100km
-
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Electric Range
88 km
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Electric Range
83 km
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Battery Capacity
19.70 kWh
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Battery Capacity
12.90 kWh
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co2
64 - 175 g/km
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co2
56 - 156 g/km
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|
Fuel tank capacity
50 - 65 L
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Fuel tank capacity
35 - 51 L
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Dimensions and Body |
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|---|---|
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Body Type
SUV
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Body Type
MPV
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Seats
5
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Seats
5
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Doors
5
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Doors
5
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Curb weight
1930 - 2140 kg
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Curb weight
1405 - 1745 kg
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Trunk capacity
460 - 570 L
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Trunk capacity
405 - 455 L
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Length
4755 mm
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Length
4419 mm
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Width
1920 mm
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Width
1796 mm
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Height
1660 mm
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Height
1562 mm
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Max trunk capacity
1600 - 1700 L
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Max trunk capacity
1440 - 1540 L
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Payload
570 kg
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Payload
505 - 550 kg
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Engine and Performance |
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|---|---|
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Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
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Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
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Transmission
Automatic
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Transmission
Automatic
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Transmission Detail
Automatic Gearbox
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Transmission Detail
Dual-Clutch Automatic
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Drive Type
All-Wheel Drive
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Drive Type
Front-Wheel Drive, All-Wheel Drive
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|
Power HP
197 - 398 HP
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Power HP
116 - 238 HP
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Acceleration 0-100km/h
4.6 - 7.8 s
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Acceleration 0-100km/h
6.5 - 10 s
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Max Speed
215 - 250 km/h
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Max Speed
200 - 250 km/h
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Torque
330 - 670 Nm
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Torque
200 - 450 Nm
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Number of Cylinders
4 - 6
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Number of Cylinders
4
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Power kW
145 - 293 kW
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Power kW
85 - 175 kW
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Engine capacity
1995 - 2998 cm3
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Engine capacity
1332 - 1991 cm3
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General |
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|---|---|
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Model Year
2024 - 2025
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Model Year
2024 - 2025
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CO2 Efficiency Class
F, E, B
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CO2 Efficiency Class
B, D, E, F
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Brand
BMW
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Brand
Mercedes-Benz
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What drive types are available for the BMW X3?
The BMW X3 is offered with All-Wheel Drive.
The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.