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Mercedes B Class vs Mercedes S Class comparison

Compare performance (238 HP vs 635 HP), boot space and price (33,100 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Mercedes S Class?

Mercedes B Class vs Mercedes S Class: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • significantly cheaper
  • substantially lighter
details

Mercedes S Class

  • clearly more power
  • substantially more efficient
  • clearly quicker 0–100 km/h
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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

B Class

Costs and Efficiency:

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

Mercedes B Class is significantly cheaper – starting at 33,100 £ , while the Mercedes S Class costs 104,000 £ . That’s a price difference of around 70,890 £.

Fuel consumption also shows a difference: the Mercedes S Class uses 2.2 L/100km and is substantially more efficient than the Mercedes B Class with 5.1 L/100km. The difference is about 2.9 L/100km.

S 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 S Class offers clearly more power – delivering 635 HP compared to 238 HP. That’s roughly 397 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes S Class is clearly quicker – completing the sprint in 4 s, while the Mercedes B Class takes 6.5 s. That’s about 2.5 s quicker.

There’s also a difference in torque: the Mercedes S Class delivers considerably more torque with 850 Nm compared to 400 Nm. That’s about 450 Nm more.

B Class

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 terms of curb weight, Mercedes B Class is substantially lighter – 1,405 kg compared to 2,165 kg. The difference is around 760 kg.

When it comes to payload, the Mercedes S Class carries a bit more – 660 kg compared to 550 kg. That’s a difference of about 110 kg.

Who wins the race in the data check?

The Mercedes S 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.

from £104,000
S Class

Mercedes S Class

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive, Rear-Wheel Drive
  • Power HP : 336 - 635 HP
  • Consumption L/100km : 2.2 - 11 L/100km
  • Electric Range : 98 - 118 km
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Frequently compared as well

Mercedes A Class
Mercedes B Class
VS
The Mercedes A‑Class is the sporty, tech‑savvy compact that thrills with sharp handling and a slick cockpit, while the Mercedes B‑Class trades a bit of attitude for towering practicality, roomier seats and a more useful boot. Choose the A‑Class if you want driving fun and style; pick the B‑Class if …
Mercedes B Class
Mercedes GLA
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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 B Class
Mercedes S Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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
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Reviews Mercedes B Class

4.9 (5 Reviews)
rate
Peter
5 Mar 2026, 05:51:19

My wife and I have been driving a Mercedes W247 200d for seven years now, with 93,000 km on the clock. The car is very comfortable even on long trips and economical. At the last service the pads of the electric parking brake were replaced; otherwise no repairs. We love this car.

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

Mercedes S Class

The Mercedes S-Class wraps peerless comfort, whisper-quiet luxury and subtle tech wizardry into a chauffeur-ready package that still knows how to engage the driver. It’s the car for buyers who want to arrive relaxed, be taken seriously and occasionally enjoy a grin when the road reminds them this limousine can dance.

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21C0428_004
21C0613_021
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Reviews Mercedes S Class

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

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Mercedes B Class
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Unsure whether the BMW 2 Series Active Tourer or the Mercedes B Class is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
Mercedes B Class
Mercedes C Class Sedan
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The Mercedes B-Klasse and C-Klasse Limousine are distinct in their appeal, catering to different automotive preferences. The B-Klasse offers a spacious interior and versatility ideal for family-oriented buyers, while the C-Klasse Limousine crafts a more luxurious experience with its sleek design …
Mercedes B Class
VW Golf
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Audi A3 Sportback
Mercedes B Class
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Mercedes GLS
Mercedes S Class
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Mercedes B Class
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Audi Q2
Mercedes B Class
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Mercedes B Class
Mercedes GLB
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When pitting the Mercedes B-Class against the Mercedes GLB, one quickly notices the distinct personalities of these two models. The B-Class offers a compact, agile experience perfect for urban environments, while the GLB combines that agility with a more spacious, SUV-like presence, making it ideal …
Mercedes B Class
Mercedes S Class

Costs and Consumption
Price
33,100 - 52,500 £
Price
104,000 - 201,400 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
2.2 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
98 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
50 - 252 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
MPV
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
2,165 - 2,650 kg
Trunk capacity
445 - 455 L
Trunk capacity
-
Length
-
Length
-
Width
1,796 mm
Width
1,921 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
420 - 660 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
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, Rear-Wheel Drive
Power HP
116 - 238 HP
Power HP
336 - 635 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
560 - 850 Nm
Number of Cylinders
4
Number of Cylinders
6 - 8
Power kW
85 - 175 kW
Power kW
247 - 467 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
G, B, F
Brand
Mercedes-Benz
Brand
Mercedes-Benz
What drivetrain options does the Mercedes B Class have?

Available configurations include 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.