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Audi A8 vs Mercedes C-Class Saloon comparison

Compare performance (571 HP vs 680 HP), boot space and price (91,400 £ vs 41,300 £ ) at a glance. Find out which car is the better choice for you – Audi A8 or Mercedes C-Class Saloon?

Audi A8 vs Mercedes C-Class Saloon: Key differences

Audi A8

5 (1 Reviews)
rate
  • substantially more electric range
details

Mercedes C-Class Saloon

  • substantially cheaper
  • slightly more power
  • very slightly more efficient
  • slightly quicker 0–100 km/h
  • markedly lighter
  • a bit more trunk space
details

By Achim Sedelmaier

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

A8

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.

Mercedes C-Class Saloon is substantially cheaper – starting at 41,300 £ , while the Audi A8 costs 91,400 £ . That’s a price difference of around 50,046 £.

Fuel consumption also shows a difference: the Mercedes C-Class Saloon uses 4.5 L/100km and is very slightly more efficient than the Audi A8 with 4.6 L/100km. The difference is about 0.1 L/100km.

As for electric range, the Audi A8 offers substantially more range – reaching up to 58 km, about 47 km more than the Mercedes C-Class Saloon.

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 slightly more power – delivering 680 HP compared to 571 HP. That’s roughly 109 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes C-Class Saloon is slightly quicker – completing the sprint in 3.4 s, while the Audi A8 takes 3.8 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the Mercedes C-Class Saloon delivers noticeably more torque with 1,020 Nm compared to 800 Nm. That’s about 220 Nm more.

A8

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes C-Class Saloon is markedly lighter – 1,695 kg compared to 2,035 kg. The difference is around 340 kg.

Looking at boot space, the Mercedes C-Class Saloon offers a bit more boot space – 455 L compared to 390 L. That’s a difference of about 65 L.

When it comes to payload, the Audi A8 carries a bit more – 700 kg compared to 570 kg. That’s a difference of about 130 kg.

Who wins the race in the data check?

The Mercedes C-Class Saloon sits just ahead 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
details

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A8

The Audi A8 arrives with the kind of quiet authority that makes other limousines feel like they’re trying too hard, offering a cabin wrapped in subtle luxury and tech that never demands attention. For buyers who want composed comfort and discreet status, it’s the sensible splurge that turns daily commutes into a private parade.

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Reviews Audi A8

5 (1 Reviews)
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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

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Costs and Consumption
Price
91,400 - 134,900 £
Price
41,300 - 103,400 £
Consumption L/100km
4.6 - 11.5 L/100km
Consumption L/100km
4.5 - 9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
58 km
Electric Range
11 km
Battery Capacity
-
Battery Capacity
-
co2
105 - 260 g/km
co2
119 - 205 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,035 - 2,415 kg
Curb weight
1,695 - 2,165 kg
Trunk capacity
390 L
Trunk capacity
280 - 455 L
Length
-
Length
-
Width
1,945 mm
Width
1,820 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
525 - 700 kg
Payload
485 - 570 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
286 - 571 HP
Power HP
183 - 680 HP
Acceleration 0-100km/h
3.8 - 5.9 s
Acceleration 0-100km/h
3.4 - 8.6 s
Max Speed
-
Max Speed
-
Torque
500 - 800 Nm
Torque
250 - 1,020 Nm
Number of Cylinders
6 - 8
Number of Cylinders
4
Power kW
210 - 420 kW
Power kW
135 - 500 kW
Engine capacity
2,967 - 3,996 cm3
Engine capacity
1,496 - 1,999 cm3

General
Model Year
2025
Model Year
2,024 - 2,025
CO2 Efficiency Class
G, C
CO2 Efficiency Class
E, D, G
Brand
Audi
Brand
Mercedes-Benz
What drive types are available for the Audi A8?

The Audi A8 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.