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Audi A4 Avant vs Mercedes C-Class Saloon comparison

Compare performance (470 HP vs 680 HP), boot space and price (37,200 £ vs 41,300 £ ) at a glance. Find out which car is the better choice for you – Audi A4 Avant or Mercedes C-Class Saloon?

Audi A4 Avant vs Mercedes C-Class Saloon: Key differences

Audi A4 Avant

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  • slightly cheaper
  • very slightly lighter
  • barely more trunk space
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Mercedes C-Class Saloon

  • visibly more power
  • marginally more efficient
  • only slightly quicker 0–100 km/h
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By Achim Sedelmaier

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

A4 Avant

Costs and Efficiency:

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

Audi A4 Avant is slightly cheaper – starting at 37,200 £ , while the Mercedes C-Class Saloon costs 41,300 £ . That’s a price difference of around 4,083 £.

Fuel consumption also shows a difference: the Mercedes C-Class Saloon uses 4.5 L/100km and is marginally more efficient than the Audi A4 Avant with 4.8 L/100km. The difference is about 0.3 L/100km.

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 visibly more power – delivering 680 HP compared to 470 HP. That’s roughly 210 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes C-Class Saloon is only slightly quicker – completing the sprint in 3.4 s, while the Audi A4 Avant takes 3.7 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the Mercedes C-Class Saloon delivers substantially more torque with 1,020 Nm compared to 600 Nm. That’s about 420 Nm more.

A4 Avant

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, Audi A4 Avant is very slightly lighter – 1,595 kg compared to 1,695 kg. The difference is around 100 kg.

Looking at boot space, the Audi A4 Avant offers barely more boot space – 495 L compared to 455 L. That’s a difference of about 40 L.

When it comes to payload, the Mercedes C-Class Saloon carries barely more – 570 kg compared to 565 kg. That’s a difference of about 5 kg.

Who wins the race in the data check?

The Mercedes C-Class Saloon shows a few small advantages 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
Audi A4 Avant
Mercedes C-Class Saloon

Costs and Consumption

View detailed analysis

Engine and Performance

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Dimensions and Body

View detailed analysis

Audi A4 Avant

The Audi A4 Avant blends elegant, understated styling with practical estate versatility, making it a polished choice for drivers who want both poise and generous cargo space. Inside, the cabin feels premium and tech-forward while the composed driving manners turn routine journeys into a quietly satisfying experience—exactly the sensible indulgence buyers will appreciate.

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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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Audi A4 Avant
Mercedes C-Class Saloon

Costs and Consumption

Price
37,200 - 122,500 £
Price
41,300 - 103,400 £
Consumption L/100km
4.8 - 9.7 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
126 - 220 g/km
co2
119 - 205 g/km
Fuel tank capacity
40 - 58 L
Fuel tank capacity
-

Dimensions and Body

Body Type
Estate
Body Type
Sedan
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,595 - 1,820 kg
Curb weight
1,695 - 2,165 kg
Trunk capacity
495 L
Trunk capacity
280 - 455 L
Length
4,750 - 4,782 mm
Length
-
Width
1,842 - 1,866 mm
Width
1,820 - 1,900 mm
Height
1,428 - 1,493 mm
Height
-
Max trunk capacity
1,495 L
Max trunk capacity
-
Payload
510 - 565 kg
Payload
485 - 570 kg

Engine and Performance

Engine Type
Diesel MHEV, Petrol MHEV, Petrol
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive, Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
136 - 470 HP
Power HP
183 - 680 HP
Acceleration 0-100km/h
3.7 - 9.8 s
Acceleration 0-100km/h
3.4 - 8.6 s
Max Speed
210 - 300 km/h
Max Speed
-
Torque
270 - 600 Nm
Torque
250 - 1,020 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
100 - 346 kW
Power kW
135 - 500 kW
Engine capacity
1,968 - 2,894 cm3
Engine capacity
1,496 - 1,999 cm3

General

Model Year
2,023 - 2,024
Model Year
2,024 - 2,025
CO2 Efficiency Class
E, F, D, G
CO2 Efficiency Class
E, D, G
Brand
Audi
Brand
Mercedes-Benz
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.