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Kia EV9 vs Mercedes EQS comparison

Compare performance (508 HP vs 585 HP), boot space and price (54,200 £ vs 80,900 £ ) at a glance. Find out which car is the better choice for you – Kia EV9 or Mercedes EQS?

Kia EV9 vs Mercedes EQS: Key differences

Kia EV9

5 (1 Reviews)
rate
  • substantially cheaper
  • marginally lighter
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Mercedes EQS

  • a bit more power
  • clearly more efficient
  • visibly more electric range
  • somewhat quicker 0–100 km/h
  • clearly more trunk space
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By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

EV9

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Kia EV9 is substantially cheaper – starting at 54,200 £ , while the Mercedes EQS costs 80,900 £ . That’s a price difference of around 26,754 £.

In terms of energy consumption, the Mercedes EQS is clearly more efficient: consuming 15.5 kWh/100km compared to 19.5 kWh/100km for the Kia EV9. That’s a difference of about 4 kWh/100km.

As for electric range, the Mercedes EQS offers visibly more range – reaching up to 920 km, about 357 km more than the Kia EV9.

EQS

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Mercedes EQS offers a bit more power – delivering 585 HP compared to 508 HP. That’s roughly 77 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes EQS is somewhat quicker – completing the sprint in 4.1 s, while the Kia EV9 takes 4.6 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the Mercedes EQS delivers barely more torque with 800 Nm compared to 740 Nm. That’s about 60 Nm more.

EV9

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: Kia EV9 offers more seats – 7 vs 5.

In terms of curb weight, Kia EV9 is marginally lighter – 2,392 kg compared to 2,550 kg. The difference is around 158 kg.

Looking at boot space, the Mercedes EQS offers clearly more boot space – 610 L compared to 333 L. That’s a difference of about 277 L.

When it comes to payload, the Kia EV9 carries only slightly more – 615 kg compared to 570 kg. That’s a difference of about 45 kg.

Who wins the race in the data check?

The Mercedes EQS stands well ahead of its rival 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 £80,900
EQS

Mercedes EQS

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 367 - 585 HP
  • Consumption kWh/100km : 15.5 - 16.3 kWh/100km
  • Electric Range : 810 - 920 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Kia EV9

The Kia EV9 is a bold, boxy electric SUV that looks like it could swallow your luggage and the in‑laws, with an interior that feels more lounge than cockpit and a presence that makes smaller rivals suddenly feel shy. On the road it delivers calm long‑distance composure with enough shove to keep overtakes effortless, and its tech and practicality make it an easy, sensible choice for buyers who want electric without compromise.

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Reviews Kia EV9

5 (1 Reviews)
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No reviews yet. Share your experience and help others decide.

Mercedes EQS

The Mercedes EQS is a silent, spaceship-like flagship that turns electric luxury into zen on wheels, wrapped in a swooping design that insists on being admired. Inside it’s all glassy screens and soft-touch surfaces that make long trips feel like first class, and the driving experience is composed and effortless — like a courteous butler with an electric heart.

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Reviews Mercedes EQS

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Kia EV9
Mercedes EQS

Costs and Consumption
Price
54,200 - 78,000 £
Price
80,900 - 117,500 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
19.5 - 22.8 kWh/100km
Consumption kWh/100km
15.5 - 16.3 kWh/100km
Electric Range
443 - 563 km
Electric Range
810 - 920 km
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
6 - 7
Seats
5
Doors
-
Doors
-
Curb weight
2,392 - 2,664 kg
Curb weight
2,550 - 2,660 kg
Trunk capacity
333 L
Trunk capacity
610 L
Length
-
Length
-
Width
1,980 mm
Width
1,926 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
542 - 615 kg
Payload
545 - 570 kg

Engine and Performance
Engine Type
Electric
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
204 - 508 HP
Power HP
367 - 585 HP
Acceleration 0-100km/h
4.6 - 9.4 s
Acceleration 0-100km/h
4.1 - 6.2 s
Max Speed
-
Max Speed
-
Torque
350 - 740 Nm
Torque
505 - 800 Nm
Number of Cylinders
-
Number of Cylinders
-
Power kW
150 - 374 kW
Power kW
270 - 430 kW
Engine capacity
-
Engine capacity
-

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
A
CO2 Efficiency Class
A
Brand
Kia
Brand
Mercedes-Benz
What drivetrain options does the Kia EV9 have?

Available configurations include Rear-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.