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Mazda 3 Sedan vs Mercedes B Class - Differences and prices compared
Compare performance (186 HP vs 238 HP), boot space and price (25000 £ vs 33100 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or Mercedes B Class?
B Class
Costs and Efficiency:
Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.
Mazda 3 Sedan has a noticeable advantage in terms of price – it starts at 25000 £ , while the Mercedes B Class costs 33100 £ . That’s a price difference of around 8152 £.
Fuel consumption also shows a difference: Mercedes B Class manages with 2.50 L and is therefore convincingly more efficient than the Mazda 3 Sedan with 5.50 L. The difference is about 3 L per 100 km.
B Class
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 Mercedes B Class has a noticeable edge – offering 238 HP compared to 186 HP. That’s roughly 52 HP more horsepower.
In acceleration from 0 to 100 km/h, the Mercedes B Class is evident quicker – completing the sprint in 6.50 s, while the Mazda 3 Sedan takes 8.10 s. That’s about 1.60 s faster.
There’s also a difference in torque: Mercedes B Class pulls significantly stronger with 450 Nm compared to 240 Nm. That’s about 210 Nm difference.
B Class
Space and Everyday Use:
Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.
Both vehicles offer seating for 5 people.
In curb weight, Mercedes B Class is barely noticeable lighter – 1405 kg compared to 1420 kg. The difference is around 15 kg.
In terms of boot space, the Mercedes B Class offers slight more room – 455 L compared to 450 L. That’s a difference of about 5 L.
When it comes to payload, Mercedes B Class to a small extent takes the win – 550 kg compared to 481 kg. That’s a difference of about 69 kg.
Who wins the race in the data check?
The Mercedes B Class 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.
Mazda 3 Sedan
Mercedes B Class
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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from about £33,100
Mercedes B Class
Mazda 3 Sedan
4.7 (1 Reviews)
The Mazda 3 Sedan dresses like a compact premium car, with sculpted lines and an interior that punches well above its class. It rewards drivers with eager handling and a composed, comfortable ride that turns routine runs into something a bit more enjoyable — proof that style and substance can share the same key.
detailsMercedes B Class
5 (4 Reviews)
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
Mazda 3 Sedan
Mercedes B Class
Costs and Consumption |
|
|---|---|
|
Price
25000 - 34200 £
|
Price
33100 - 52500 £
|
|
Consumption L/100km
5.5 - 6.1 L
|
Consumption L/100km
2.5 - 6.9 L
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
-
|
|
Electric Range
-
|
Electric Range
83 km
|
|
Battery Capacity
-
|
Battery Capacity
12.90 kWh
|
|
co2
123 - 135 g/km
|
co2
56 - 156 g/km
|
|
Fuel tank capacity
-
|
Fuel tank capacity
35 L
|
Dimensions and Body |
|
|---|---|
|
Body Type
Sedan
|
Body Type
MPV
|
|
Seats
5
|
Seats
5
|
|
Doors
-
|
Doors
5
|
|
Curb weight
1420 - 1492 kg
|
Curb weight
1405 - 1745 kg
|
|
Trunk capacity
450 L
|
Trunk capacity
405 - 455 L
|
|
Length
-
|
Length
4419 mm
|
|
Width
1795 mm
|
Width
1796 mm
|
|
Height
-
|
Height
1562 mm
|
|
Max trunk capacity
-
|
Max trunk capacity
1440 L
|
|
Payload
467 - 481 kg
|
Payload
505 - 550 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Petrol MHEV
|
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
|
|
Transmission
Manuel, Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Manual Gearbox, Automatic Gearbox
|
Transmission Detail
Dual-Clutch Automatic
|
|
Drive Type
Front-Wheel Drive
|
Drive Type
Front-Wheel Drive, All-Wheel Drive
|
|
Power HP
140 - 186 HP
|
Power HP
116 - 238 HP
|
|
Acceleration 0-100km/h
8.1 - 9.8 s
|
Acceleration 0-100km/h
6.5 - 10 s
|
|
Max Speed
-
|
Max Speed
223 km/h
|
|
Torque
238 - 240 Nm
|
Torque
200 - 450 Nm
|
|
Number of Cylinders
4
|
Number of Cylinders
4
|
|
Power kW
103 - 137 kW
|
Power kW
85 - 175 kW
|
|
Engine capacity
1998 - 2488 cm3
|
Engine capacity
1332 - 1991 cm3
|
General |
|
|---|---|
|
Model Year
2025
|
Model Year
2024 - 2025
|
|
CO2 Efficiency Class
D
|
CO2 Efficiency Class
B, D, E, F
|
|
Brand
Mazda
|
Brand
Mercedes-Benz
|
What drivetrain options does the Mazda 3 Sedan have?
The Mazda 3 Sedan is available as Front-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.