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Mercedes S-Class vs Kia EV6 comparison

Compare performance (635 HP vs 609 HP), boot space and price (104,000 £ vs 38,600 £ ) at a glance. Find out which car is the better choice for you – Mercedes S-Class or Kia EV6?

Mercedes S-Class vs Kia EV6: Key differences

Mercedes S-Class

  • very slightly more power
  • only slightly more trunk space
details

Kia EV6

5 (3 Reviews)
rate
  • substantially cheaper
  • significantly more electric range
  • somewhat quicker 0–100 km/h
  • somewhat lighter
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

S-Class

Costs and Efficiency:

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

Kia EV6 is substantially cheaper – starting at 38,600 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 65,457 £.

As for electric range, the Kia EV6 offers significantly more range – reaching up to 582 km, about 464 km more than the Mercedes S-Class.

EV6

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 very slightly more power – delivering 635 HP compared to 609 HP. That’s roughly 26 HP more horsepower.

When accelerating from 0 to 100 km/h, the Kia EV6 is somewhat quicker – completing the sprint in 3.5 s, while the Mercedes S-Class takes 4 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the Mercedes S-Class delivers barely more torque with 850 Nm compared to 770 Nm. That’s about 80 Nm more.

S-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 terms of curb weight, Kia EV6 is somewhat lighter – 1,955 kg compared to 2,165 kg. The difference is around 210 kg.

Looking at boot space, the Mercedes S-Class offers only slightly more boot space – 530 L compared to 490 L. That’s a difference of about 40 L.

When it comes to payload, the Mercedes S-Class carries clearly more – 660 kg compared to 450 kg. That’s a difference of about 210 kg.

Who wins the race in the data check?

The Kia EV6 is decisively ahead 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 £38,600
EV6

Kia EV6

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 170 - 609 HP
  • Consumption kWh/100km 15.9 - 20.9 kWh/100km
  • Electric Range 428 - 582 km
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Frequently compared as well

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Mercedes S-Class
Kia EV6

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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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Reviews Mercedes S-Class

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

Kia EV6

The Kia EV6 looks like it sprinted off a concept stage, its bold, futuristic lines wrapping a surprisingly spacious and grown-up cabin. On the road it delivers crisp, immediate thrust and composed handling, with enough everyday practicality and slick tech to make ditching petrol feel like an upgrade rather than a compromise.

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Reviews Kia EV6

5 (3 Reviews)
rate
María Cardoso
11 Feb 2026, 06:43:58

I love this car — it moves super fast, makes me feel safe and wonderfully agile, like it’s got the power of a gasoline V8.

How do you mainly use this car? (optional): Commuter (short/medium distance)
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Janek
4 Feb 2026, 14:52:37

Great for city and recreational driving. Highway speeds and winter reveal its appetite for electricity — range drops quickly. The low beams could be brighter; the high beam is potent! Other than that, the car really pampers you.

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

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Mercedes S-Class
Kia EV6

Costs and Consumption
Price
104,000 - 201,400 £
Price
38,600 - 60,000 £
Consumption L/100km
2.2 - 11 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
15.9 - 20.9 kWh/100km
Electric Range
98 - 118 km
Electric Range
428 - 582 km
Battery Capacity
-
Battery Capacity
-
co2
50 - 252 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,165 - 2,650 kg
Curb weight
1,955 - 2,220 kg
Trunk capacity
345 - 530 L
Trunk capacity
480 - 490 L
Length
-
Length
-
Width
1,921 mm
Width
1,880 - 1,890 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
420 - 660 kg
Payload
440 - 450 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
336 - 635 HP
Power HP
170 - 609 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
3.5 - 8.7 s
Max Speed
-
Max Speed
-
Torque
560 - 850 Nm
Torque
350 - 770 Nm
Number of Cylinders
6 - 8
Number of Cylinders
-
Power kW
247 - 467 kW
Power kW
125 - 448 kW
Engine capacity
2,989 - 3,982 cm3
Engine capacity
-

General
Model Year
2026
Model Year
2,024 - 2,025
CO2 Efficiency Class
G, B, F
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
Kia
Is the Mercedes S-Class offered with different drivetrains?

The Mercedes S-Class is offered with All-Wheel Drive or Rear-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.