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Audi A5 Sportback vs Mercedes C Class Sedan comparison

Compare performance (639 HP vs 680 HP), boot space and price (38700 £ vs 41300 £ ) at a glance. Find out which car is the better choice for you – Audi A5 Sportback or Mercedes C Class Sedan?

Audi A5 Sportback vs Mercedes C Class Sedan: Key differences

Audi A5 Sportback

  • hardly perceptible cheaper

Mercedes C Class Sedan

  • slight more power
  • evident more efficient
  • slight more electric range
  • hardly perceptible quicker from 0–100 km/h
  • slight lighter
  • slight more trunk space

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

A5 Sportback

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 has a hardly perceptible advantage in terms of price – it starts at 38700 £ , while the Mercedes C Class Sedan costs 41300 £ . That’s a price difference of around 2583 £.

Fuel consumption also shows a difference: Mercedes C Class Sedan manages with 1.60 L and is therefore evident more efficient than the Audi A5 Sportback with 2 L. The difference is about 0.40 L per 100 km.

As for electric range, the Mercedes C Class Sedan performs slight better – achieving up to 117 km, about 7 km more than the Audi A5 Sportback.

C Class Sedan

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 Sedan has a slight edge – offering 680 HP compared to 639 HP. That’s roughly 41 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes C Class Sedan is hardly perceptible quicker – completing the sprint in 3.40 s, while the Audi A5 Sportback takes 3.70 s. That’s about 0.30 s faster.

There’s no difference in top speed – both reach 250 km/h.

There’s also a difference in torque: Mercedes C Class Sedan pulls a bit stronger with 1020 Nm compared to 825 Nm. That’s about 195 Nm difference.

A5 Sportback

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 curb weight, Mercedes C Class Sedan is slight lighter – 1695 kg compared to 1770 kg. The difference is around 75 kg.

In terms of boot space, the Mercedes C Class Sedan offers slight more room – 455 L compared to 445 L. That’s a difference of about 10 L.

When it comes to payload, Mercedes C Class Sedan barely noticeable takes the win – 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 narrowly 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.

Frequently compared as well

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Audi A5 Sportback
Mercedes C Class Sedan

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £38,700
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
  • Electric Range : 84 - 110 km
details

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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Mercedes C Class Sedan

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 Audi A5 Sportback

Reviews Mercedes C Class Sedan

Audi A5 Sportback
Mercedes C Class Sedan

Costs and Consumption
Price
38700 - 91000 £
Price
41300 - 103400 £
Consumption L/100km
2 - 7.6 L
Consumption L/100km
1.6 - 9 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
84 - 110 km
Electric Range
11 - 117 km
Battery Capacity
20.70 kWh
Battery Capacity
19.50 kWh
co2
45 - 172 g/km
co2
41 - 205 g/km
Fuel tank capacity
46 - 60 L
Fuel tank capacity
50 L

Dimensions and Body
Body Type
Hatchback
Body Type
Sedan
Seats
4 - 5
Seats
5
Doors
5
Doors
4
Curb weight
1770 - 2430 kg
Curb weight
1695 - 2195 kg
Trunk capacity
331 - 445 L
Trunk capacity
315 - 455 L
Length
4829 - 4835 mm
Length
4751 mm
Width
1860 - 1952 mm
Width
1820 - 1900 mm
Height
1429 - 1444 mm
Height
1438 mm
Max trunk capacity
1175 - 1299 L
Max trunk capacity
-
Payload
475 - 530 kg
Payload
480 - 570 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
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
150 - 639 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
216 - 250 km/h
Max Speed
235 - 250 km/h
Torque
280 - 825 Nm
Torque
250 - 1020 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
110 - 470 kW
Power kW
135 - 500 kW
Engine capacity
1968 - 2995 cm3
Engine capacity
1496 - 1999 cm3

General
Model Year
2025 - 2026
Model Year
2024 - 2025
CO2 Efficiency Class
B, E, F, D
CO2 Efficiency Class
E, B, D, G
Brand
Audi
Brand
Mercedes-Benz

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Is the Audi A5 Sportback offered with different drivetrains?

Available configurations include All-Wheel Drive or Front-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.