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Kia Niro vs Mercedes C-Class Saloon comparison

Compare performance (138 HP vs 680 HP), boot space and price (29,100 £ vs 41,300 £ ) at a glance. Find out which car is the better choice for you – Kia Niro or Mercedes C-Class Saloon?

Kia Niro vs Mercedes C-Class Saloon: Key differences

Kia Niro

4.5 (3 Reviews)
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  • substantially cheaper
  • somewhat lighter
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Mercedes C-Class Saloon

  • clearly more power
  • clearly quicker 0–100 km/h
  • marginally more trunk space
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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

Niro

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 Niro is substantially cheaper – starting at 29,100 £ , while the Mercedes C-Class Saloon costs 41,300 £ . That’s a price difference of around 12,191 £.

Both cars consume an average of 4.5 L/100km – no difference here.

C-Class Saloon

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 C-Class Saloon offers clearly more power – delivering 680 HP compared to 138 HP. That’s roughly 542 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes C-Class Saloon is clearly quicker – completing the sprint in 3.4 s, while the Kia Niro takes 11.1 s. That’s about 7.7 s quicker.

There’s also a difference in torque: the Mercedes C-Class Saloon delivers substantially more torque with 1,020 Nm compared to 265 Nm. That’s about 755 Nm more.

Niro

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 Niro is somewhat lighter – 1,474 kg compared to 1,695 kg. The difference is around 221 kg.

Looking at boot space, the Mercedes C-Class Saloon offers marginally more boot space – 455 L compared to 451 L. That’s a difference of about 4 L.

When it comes to payload, the Mercedes C-Class Saloon carries slightly more – 570 kg compared to 466 kg. That’s a difference of about 104 kg.

Who wins the race in the data check?

The Mercedes C-Class Saloon 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 £41,300
C-Class Saloon

Mercedes C-Class Saloon

  • Engine Type Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 183 - 680 HP
  • Consumption L/100km 4.5 - 9 L/100km
  • Electric Range 11 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Kia Niro

The Kia Niro is a practical crossover that blends economy and everyday versatility without sacrificing comfort. With a roomy, well-laid-out cabin and calm, composed handling, it’s an easy-to-live-with choice for commuters and families.

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Reviews Kia Niro

4.5 (3 Reviews)
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Archi
25 Mar 2026, 13:11:41

Efficient, functional, understated, spacious and comfortable. No surprises: it delivers what it promises and does its job without fanfare. Good buy.

How do you mainly use this car? (optional): Leisure / Weekend driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Wolfgang Schäfer
21 Oct 2025, 14:01:32

I've been driving the Kia Niro since 2019 and am still very happy with this car.

Mercedes C-Class Saloon

The Mercedes C‑Class is the compact executive that dresses like it owns the boulevard, with an interior that blends modern elegance and plush comfort to make everyday driving feel unexpectedly special. On the road it pairs poise with a hint of cheeky agility, rewarding drivers who want refinement without forfeiting a touch of fun — and yes, it still looks great in the driveway.

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Reviews Mercedes C-Class Saloon

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

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Mercedes C-Class Saloon

Costs and Consumption
Price
29,100 - 33,800 £
Price
41,300 - 103,400 £
Consumption L/100km
4.5 - 4.9 L/100km
Consumption L/100km
4.5 - 9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
11 km
Battery Capacity
-
Battery Capacity
-
co2
102 - 111 g/km
co2
119 - 205 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,474 kg
Curb weight
1,695 - 2,165 kg
Trunk capacity
451 L
Trunk capacity
280 - 455 L
Length
-
Length
-
Width
1,825 mm
Width
1,820 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
466 kg
Payload
485 - 570 kg

Engine and Performance
Engine Type
Full Hybrid
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
138 HP
Power HP
183 - 680 HP
Acceleration 0-100km/h
11.1 - 11.4 s
Acceleration 0-100km/h
3.4 - 8.6 s
Max Speed
-
Max Speed
-
Torque
265 Nm
Torque
250 - 1,020 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
102 kW
Power kW
135 - 500 kW
Engine capacity
1,580 cm3
Engine capacity
1,496 - 1,999 cm3

General
Model Year
2025
Model Year
2,024 - 2,025
CO2 Efficiency Class
C
CO2 Efficiency Class
E, D, G
Brand
Kia
Brand
Mercedes-Benz
What drive types are available for the Kia Niro?

The Kia Niro is offered with Front-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.