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Mercedes B Class vs smart #1 comparison

Compare performance (238 HP vs 368 HP), boot space and price (33,100 £ vs 40,700 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or smart #1?

Mercedes B Class vs smart #1: Key differences

Mercedes B Class

4.9 (6 Reviews)
rate
  • markedly cheaper
  • markedly lighter
  • clearly more trunk space
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smart #1

  • noticeably more power
  • noticeably 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.

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 markedly cheaper – starting at 33,100 £ , while the smart #1 costs 40,700 £ . That’s a price difference of around 7,576 £.

#1

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 smart #1 offers noticeably more power – delivering 368 HP compared to 238 HP. That’s roughly 130 HP more horsepower.

When accelerating from 0 to 100 km/h, the smart #1 is noticeably quicker – completing the sprint in 4.9 s, while the Mercedes B Class takes 6.5 s. That’s about 1.6 s quicker.

There’s also a difference in torque: the smart #1 delivers moderately more torque with 470 Nm compared to 400 Nm. That’s about 70 Nm more.

B Class

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 B Class is markedly lighter – 1,405 kg compared to 1,900 kg. The difference is around 495 kg.

Looking at boot space, the Mercedes B Class offers clearly more boot space – 455 L compared to 313 L. That’s a difference of about 142 L.

When it comes to payload, the Mercedes B Class carries noticeably more – 550 kg compared to 425 kg. That’s a difference of about 125 kg.

Who wins the race in the data check?

The smart #1 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.

£40,705
#1

smart #1

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 368 HP
  • Consumption kWh/100km 18.2 kWh/100km
  • Electric Range 400 km
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Frequently compared as well

Mercedes B Class
Mercedes GLA
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The Mercedes B‑Class and Mercedes GLA target buyers who want Mercedes practicality with premium touches, but they take different paths: the B‑Class is a spacious, hatchback-style people carrier while the GLA is a compact crossover with a higher ride height and sportier stance. This comparison looks …
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Mercedes B Class
smart #1

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.

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Reviews Mercedes B Class

4.9 (6 Reviews)
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SiBa
31 Jul 2026, 14:51:34

We've been driving only the B180D automatic for 9 years — there's nothing better. Great on long trips; the next one will be another B180D automatic.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Safety
Practicality / Trunk & Everyday Use
Value for Money
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

smart #1

The Smart #1 feels like a breath of fresh air in the compact EV world, pairing playful styling with usable space and a cabin that punches above its size. It skips the fuss and delivers an easygoing, city-friendly driving experience with clever features that make it a sensible, slightly cheeky choice for everyday motoring.

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Reviews smart #1

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

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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 …
Audi Q2
Mercedes B Class
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Mercedes B Class
smart #1

Costs and Consumption
Price
33,100 - 52,500 £
Price
40,700 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
18.2 kWh/100km
Electric Range
-
Electric Range
400 km
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
MPV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
1,900 kg
Trunk capacity
445 - 455 L
Trunk capacity
313 L
Length
-
Length
-
Width
1,796 mm
Width
1,822 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
425 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
116 - 238 HP
Power HP
368 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
4.9 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
470 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
85 - 175 kW
Power kW
271 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
-

General
Model Year
2025
Model Year
2024
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
smart
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.