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Audi A8 vs Mercedes S Class comparison

Compare performance (571 HP vs 635 HP), boot space and price (91,400 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – Audi A8 or Mercedes S Class?

Audi A8 vs Mercedes S Class: Key differences

Audi A8

5 (1 Reviews)
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  • slightly cheaper
  • only slightly quicker 0–100 km/h
  • barely lighter
details

Mercedes S Class

  • moderately more power
  • considerably more efficient
  • substantially more electric range
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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.

Audi A8 is slightly cheaper – starting at 91,400 £ , while the Mercedes S Class costs 104,000 £ . That’s a price difference of around 12,648 £.

Fuel consumption also shows a difference: the Mercedes S Class uses 2.2 L/100km and is considerably more efficient than the Audi A8 with 4.6 L/100km. The difference is about 2.4 L/100km.

As for electric range, the Mercedes S Class offers substantially more range – reaching up to 118 km, about 60 km more than the Audi A8.

S Class

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 offers moderately more power – delivering 635 HP compared to 571 HP. That’s roughly 64 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A8 is only slightly quicker – completing the sprint in 3.8 s, while the Mercedes S Class takes 4 s. That’s about 0.2 s quicker.

There’s also a difference in torque: the Mercedes S Class delivers marginally more torque with 850 Nm compared to 800 Nm. That’s about 50 Nm more.

A8

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Audi A8 is barely lighter – 2,035 kg compared to 2,165 kg. The difference is around 130 kg.

When it comes to payload, the Audi A8 carries barely more – 700 kg compared to 660 kg. That’s a difference of about 40 kg.

Who wins the race in the data check?

The Mercedes S Class 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 £104,000
S Class

Mercedes S Class

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive, Rear-Wheel Drive
  • Power HP : 336 - 635 HP
  • Consumption L/100km : 2.2 - 11 L/100km
  • Electric Range : 98 - 118 km
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Audi A8
Mercedes S Class

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

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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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Reviews Mercedes S Class

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Audi A8
Mercedes S Class

Costs and Consumption
Price
91,400 - 134,900 £
Price
104,000 - 201,400 £
Consumption L/100km
4.6 - 11.5 L/100km
Consumption L/100km
2.2 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
58 km
Electric Range
98 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
105 - 260 g/km
co2
50 - 252 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
2,165 - 2,650 kg
Trunk capacity
390 L
Trunk capacity
-
Length
-
Length
-
Width
1,945 mm
Width
1,921 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
525 - 700 kg
Payload
420 - 660 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
286 - 571 HP
Power HP
336 - 635 HP
Acceleration 0-100km/h
3.8 - 5.9 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
-
Max Speed
-
Torque
500 - 800 Nm
Torque
560 - 850 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
210 - 420 kW
Power kW
247 - 467 kW
Engine capacity
2,967 - 3,996 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
G, C
CO2 Efficiency Class
G, B, F
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.