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Mercedes C-Class Saloon vs Audi A5 Sportback comparison

Compare performance (680 HP vs 639 HP), boot space and price (41,300 £ vs 40,200 £ ) at a glance. Find out which car is the better choice for you – Mercedes C-Class Saloon or Audi A5 Sportback?

Mercedes C-Class Saloon vs Audi A5 Sportback: Key differences

Mercedes C-Class Saloon

  • only slightly more power
  • very slightly quicker 0–100 km/h
  • very slightly lighter
  • visibly more trunk space
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Audi A5 Sportback

  • marginally cheaper
  • clearly more efficient
  • significantly more electric range
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By Achim Sedelmaier

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

C-Class Saloon

Costs and Efficiency:

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

Audi A5 Sportback is marginally cheaper – starting at 40,200 £ , while the Mercedes C-Class Saloon costs 41,300 £ . That’s a price difference of around 1,125 £.

Fuel consumption also shows a difference: the Audi A5 Sportback uses 2 L/100km and is clearly more efficient than the Mercedes C-Class Saloon with 4.5 L/100km. The difference is about 2.5 L/100km.

As for electric range, the Audi A5 Sportback offers significantly more range – reaching up to 110 km, about 99 km more than the Mercedes C-Class Saloon.

A5 Sportback

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mercedes C-Class Saloon offers only slightly more power – delivering 680 HP compared to 639 HP. That’s roughly 41 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes C-Class Saloon is very slightly quicker – completing the sprint in 3.4 s, while the Audi A5 Sportback takes 3.7 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the Mercedes C-Class Saloon delivers moderately more torque with 1,020 Nm compared to 825 Nm. That’s about 195 Nm more.

C-Class Saloon

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 very slightly lighter – 1,695 kg compared to 1,770 kg. The difference is around 75 kg.

Looking at boot space, the Mercedes C-Class Saloon offers visibly more boot space – 455 L compared to 331 L. That’s a difference of about 124 L.

When it comes to payload, the Mercedes C-Class Saloon carries marginally more – 570 kg compared to 530 kg. That’s a difference of about 40 kg.

Who wins the race in the data check?

The Audi A5 Sportback 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 £40,200
A5 Sportback

Audi A5 Sportback

  • Engine Type : Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive, Front-Wheel Drive
  • Power HP : 150 - 639 HP
  • Consumption L/100km : 2 - 7.6 L/100km
  • Electric Range : 84 - 110 km
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Mercedes C-Class Saloon
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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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Audi A5 Sportback

The Audi A5 Sportback dresses up sleek coupe proportions with the everyday sense of a practical hatchback, so you get striking looks without the compromises. Behind the wheel it balances poise and comfort with premium trimmings that make daily driving feel a little bit special — ideal for buyers who want style and substance in equal measure.

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Reviews Audi A5 Sportback

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Mercedes C-Class Saloon
Audi A5 Sportback

Costs and Consumption
Price
41,300 - 103,400 £
Price
40,200 - 91,000 £
Consumption L/100km
4.5 - 9 L/100km
Consumption L/100km
2 - 7.6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
11 km
Electric Range
84 - 110 km
Battery Capacity
-
Battery Capacity
-
co2
119 - 205 g/km
co2
45 - 172 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,695 - 2,165 kg
Curb weight
1,770 - 2,430 kg
Trunk capacity
455 L
Trunk capacity
331 L
Length
-
Length
-
Width
1,820 - 1,900 mm
Width
1,860 - 1,952 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
485 - 570 kg
Payload
475 - 530 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive, Front-Wheel Drive
Power HP
183 - 680 HP
Power HP
150 - 639 HP
Acceleration 0-100km/h
3.4 - 8.6 s
Acceleration 0-100km/h
3.7 - 9.8 s
Max Speed
-
Max Speed
-
Torque
250 - 1,020 Nm
Torque
280 - 825 Nm
Number of Cylinders
4
Number of Cylinders
4 - 6
Power kW
135 - 500 kW
Power kW
110 - 470 kW
Engine capacity
1,496 - 1,999 cm3
Engine capacity
1,968 - 2,995 cm3

General
Model Year
2,024 - 2,025
Model Year
2,025 - 2,026
CO2 Efficiency Class
E, D, G
CO2 Efficiency Class
B, E, F, D
Brand
Mercedes-Benz
Brand
Audi
What drivetrain options does the Mercedes C-Class Saloon have?

The Mercedes C-Class Saloon is available as 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.