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Audi A6 Avant vs Mercedes S Class – Which one offers the better deal?

Both models have their strengths – but which one suits you more?
Compare performance, efficiency, price and space directly: Audi A6 Avant or Mercedes S Class?

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

A6 Avant @ Audi AG

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Audi A6 Avant has a significantly advantage in terms of price – it starts at 49700 £, while the Mercedes S Class costs 97200 £. That’s a price difference of around 47456 £.

Both cars consume an average of 2.30 L per 100 km – no difference here.

As for range, the Mercedes S Class performs somewhat better – achieving up to 117 km, about 16 km more than the Audi A6 Avant.

S Class @ Mercedes-Benz Group Media

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 S Class has a clearly edge – offering 802 HP compared to 367 HP. That’s roughly 435 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes S Class is significantly quicker – completing the sprint in 3.30 s, while the Audi A6 Avant takes 4.70 s. That’s about 1.40 s faster.

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

There’s also a difference in torque: Mercedes S Class pulls clearly stronger with 1430 Nm compared to 550 Nm. That’s about 880 Nm difference.

A6 Avant @ Audi AG

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, Audi A6 Avant is a bit lighter – 1865 kg compared to 2070 kg. The difference is around 205 kg.

In terms of boot space, the Mercedes S Class offers barely noticeable more room – 550 L compared to 503 L. That’s a difference of about 47 L.

When it comes to payload, Mercedes S Class evident takes the win – 730 kg compared to 570 kg. That’s a difference of about 160 kg.

Who wins the race?

The Mercedes S Class proves to be dominates this comparison and therefore becomes our DriveDuel Champion!
Mercedes S Class is the better all-rounder in this comparison.

from about £97,200
S Class @ Mercedes-Benz Group Media

Mercedes S Class

  • Engine Type : Petrol MHEV, Petrol, Plugin Hybrid, Diesel MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive, Rear-Wheel Drive
  • Power HP : 336 - 802 HP
  • Consumption L/100km : 2.3 - 13.2 L
  • Electric Range : 31 - 117 km
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Audi A6 Avant

The Audi A6 Avant wraps executive poise and usable practicality into an impeccably finished estate that makes everyday driving feel noticeably more grown-up. It serves up a calm, composed ride and clever packaging for buyers who want space and refinement without ostentation — the sensible choice that still manages to impress.

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Mercedes S Class

The Mercedes S-Class wraps peerless comfort, whisper-quiet luxury and subtle tech wizardry into a chauffeur-ready package that still knows how to engage the driver. It’s the car for buyers who want to arrive relaxed, be taken seriously and occasionally enjoy a grin when the road reminds them this limousine can dance.

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S Class @ Mercedes-Benz Group Media

Costs and Consumption
Price
49700 - 70200 £
Price
97200 - 204400 £
Consumption L/100km
2.3 - 7.5 L
Consumption L/100km
2.3 - 13.2 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
94 - 101 km
Electric Range
31 - 117 km
Battery Capacity
20.70 kWh
Battery Capacity
10.40 kWh
co2
53 - 170 g/km
co2
52 - 301 g/km
Fuel tank capacity
46 - 60 L
Fuel tank capacity
65 - 76 L

Dimensions and Body
Body Type
Estate
Body Type
Sedan
Seats
5
Seats
5
Doors
5
Doors
4
Curb weight
1865 - 2240 kg
Curb weight
2070 - 2650 kg
Trunk capacity
404 - 503 L
Trunk capacity
325 - 550 L
Length
4999 mm
Length
5179 - 5469 mm
Width
1875 mm
Width
1921 - 1954 mm
Height
1472 mm
Height
1503 - 1515 mm
Max trunk capacity
1423 - 1534 L
Max trunk capacity
-
Payload
535 - 570 kg
Payload
420 - 730 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
204 - 367 HP
Power HP
336 - 802 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
3.3 - 5.9 s
Max Speed
238 - 250 km/h
Max Speed
250 km/h
Torque
340 - 550 Nm
Torque
500 - 1430 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6 - 12
Power kW
150 - 270 kW
Power kW
247 - 590 kW
Engine capacity
1968 - 2995 cm3
Engine capacity
2989 - 5980 cm3

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

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Is the Audi A6 Avant offered with different drivetrains?

The Audi A6 Avant is available as Front-Wheel Drive or All-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.