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Audi A8 vs Mercedes S Class comparison

Compare performance (571 HP vs 585 HP), boot space and price (91400 £ vs 104000 £ ) 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)
rate
  • a bit cheaper
  • slight quicker from 0–100 km/h
  • barely noticeable lighter

Mercedes S Class

  • slight more power
  • decisively more efficient
  • significantly more electric range

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

A8

Costs and Efficiency:

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

Audi A8 has a a bit advantage in terms of price – it starts at 91400 £ , while the Mercedes S Class costs 104000 £ . That’s a price difference of around 12648 £.

Fuel consumption also shows a difference: Mercedes S Class manages with 2.20 L and is therefore decisively more efficient than the Audi A8 with 4.60 L. The difference is about 2.40 L per 100 km.

As for electric range, the Mercedes S Class performs significantly better – achieving 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 has a slight edge – offering 585 HP compared to 571 HP. That’s roughly 14 HP more horsepower.

In acceleration from 0 to 100 km/h, the Audi A8 is slight quicker – completing the sprint in 3.80 s, while the Mercedes S Class takes 4 s. That’s about 0.20 s faster.

There’s also a difference in torque: Audi A8 pulls minimal stronger with 800 Nm compared to 750 Nm. That’s about 50 Nm difference.

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 curb weight, Audi A8 is barely noticeable lighter – 2035 kg compared to 2165 kg. The difference is around 130 kg.

When it comes to payload, Audi A8 barely noticeable takes the win – 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 holds a decisive overall lead 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.

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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
from about £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 - 585 HP
  • Consumption L/100km : 2.2 - 10.6 L
  • Electric Range : 102 - 118 km
details

Audi A8

5 (1 Reviews)
rate

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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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 Audi A8

5 (1 Reviews)
rate

Reviews Mercedes S Class

Audi A8
Mercedes S Class

Costs and Consumption
Price
91400 - 134900 £
Price
104000 - 139100 £
Consumption L/100km
4.6 - 11.5 L
Consumption L/100km
2.2 - 10.6 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
58 km
Electric Range
102 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
105 - 260 g/km
co2
50 - 241 g/km
Fuel tank capacity
82 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Sedan
Seats
5
Seats
5
Doors
4
Doors
-
Curb weight
2035 - 2415 kg
Curb weight
2165 - 2515 kg
Trunk capacity
390 - 505 L
Trunk capacity
-
Length
5190 - 5320 mm
Length
-
Width
1945 mm
Width
1921 mm
Height
1473 - 1488 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
525 - 700 kg
Payload
555 - 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 - 585 HP
Acceleration 0-100km/h
3.8 - 5.9 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
250 km/h
Max Speed
-
Torque
500 - 800 Nm
Torque
560 - 750 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
210 - 420 kW
Power kW
247 - 430 kW
Engine capacity
2967 - 3996 cm3
Engine capacity
2989 - 3982 cm3

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

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Is the Audi A8 offered with different drivetrains?

The Audi A8 is offered with All-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.