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Genesis G80 vs Mercedes B Class comparison

Compare performance (370 HP vs 238 HP), boot space and price (64,300 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Genesis G80 or Mercedes B Class?

Genesis G80 vs Mercedes B Class: Key differences

Genesis G80

  • markedly more power
  • visibly quicker 0–100 km/h
details

Mercedes B Class

4.9 (6 Reviews)
rate
  • considerably cheaper
  • substantially lighter
  • markedly more trunk space
details

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

G80

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Mercedes B Class is considerably cheaper – starting at 33,100 £ , while the Genesis G80 costs 64,300 £ . That’s a price difference of around 31,156 £.

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 Genesis G80 offers markedly more power – delivering 370 HP compared to 238 HP. That’s roughly 132 HP more horsepower.

When accelerating from 0 to 100 km/h, the Genesis G80 is visibly quicker – completing the sprint in 5.1 s, while the Mercedes B Class takes 6.5 s. That’s about 1.4 s quicker.

There’s also a difference in torque: the Genesis G80 delivers substantially more torque with 700 Nm compared to 400 Nm. That’s about 300 Nm more.

G80

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 terms of curb weight, Mercedes B Class is substantially lighter – 1,405 kg compared to 2,410 kg. The difference is around 1,005 kg.

Looking at boot space, the Mercedes B Class offers markedly more boot space – 455 L compared to 354 L. That’s a difference of about 101 L.

When it comes to payload, the Mercedes B Class carries somewhat more – 550 kg compared to 490 kg. That’s a difference of about 60 kg.

Who wins the race in the data check?

The Genesis G80 leads convincingly 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 £64,300
G80

Genesis G80

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 370 HP
  • Consumption kWh/100km 18.1 kWh/100km
  • Electric Range 570 km
details

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Genesis G80
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Genesis G80

The Genesis G80 is a quietly confident executive sedan that marries elegant, restrained design with an interior that feels bespoke rather than mass-produced. For buyers who crave flagship comfort and poise without the badge theatrics, the G80 serves serious luxury and refinement with a touch of surprising value — like a tuxedoed chauffeur who secretly loves great playlists.

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626508
584783
626511

Reviews Genesis G80

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

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)
rate
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

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Genesis G80
Mercedes B Class

Costs and Consumption
Price
64,300 - 67,800 £
Price
33,100 - 52,500 £
Consumption L/100km
-
Consumption L/100km
5.1 - 6.9 L/100km
Consumption kWh/100km
18.1 kWh/100km
Consumption kWh/100km
-
Electric Range
570 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
133 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
MPV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,410 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
354 L
Trunk capacity
445 - 455 L
Length
-
Length
-
Width
1,925 mm
Width
1,796 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
490 kg
Payload
515 - 550 kg

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

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
A
CO2 Efficiency Class
D, E, F
Brand
Genesis
Brand
Mercedes-Benz
Is the Genesis G80 offered with different drivetrains?

The Genesis G80 is available as 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.