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Audi A7 vs Mercedes S-Class comparison

Compare performance (630 HP vs 635 HP), boot space and price (55,000 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – Audi A7 or Mercedes S-Class?

Audi A7 vs Mercedes S-Class: Key differences

Audi A7

  • clearly cheaper
  • considerably more efficient
  • moderately quicker 0–100 km/h
  • noticeably lighter
  • only slightly more trunk space
details

Mercedes S-Class

  • very slightly more power
  • clearly more electric range
details

By Achim Sedelmaier

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

A7

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 A7 is clearly cheaper – starting at 55,000 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 48,991 £.

Fuel consumption also shows a difference: the Audi A7 uses 1.2 L/100km and is considerably more efficient than the Mercedes S-Class with 2.2 L/100km. The difference is about 1 L/100km.

As for electric range, the Mercedes S-Class offers clearly more range – reaching up to 118 km, about 50 km more than the Audi A7.

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 very slightly more power – delivering 635 HP compared to 630 HP. That’s roughly 5 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A7 is moderately quicker – completing the sprint in 3.4 s, while the Mercedes S-Class takes 4 s. That’s about 0.6 s quicker.

Both models offer the same torque – 850 Nm.

A7

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.

Seats: Mercedes S-Class offers more seats – 5 vs 4.

In terms of curb weight, Audi A7 is noticeably lighter – 1,770 kg compared to 2,165 kg. The difference is around 395 kg.

Looking at boot space, the Audi A7 offers only slightly more boot space – 535 L compared to 530 L. That’s a difference of about 5 L.

When it comes to payload, the Mercedes S-Class carries marginally more – 660 kg compared to 600 kg. That’s a difference of about 60 kg.

Who wins the race in the data check?

The Audi A7 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.

from £55,000
A7

Audi A7

  • Engine Type Diesel MHEV, Petrol MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Front-Wheel Drive
  • Power HP 204 - 630 HP
  • Consumption L/100km 1.2 - 12.2 L/100km
  • Electric Range 67 - 68 km
details

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A7

The Audi A7 wraps elegant fastback lines around a sumptuous, tech-packed cabin that turns everyday drives into something a bit more special. It strikes a polished balance between relaxed comfort and engaging poise, so you’ll enjoy long cruises and spirited backroad runs while arriving in unmistakable style.

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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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Mercedes S-Class

Costs and Consumption
Price
55,000 - 117,900 £
Price
104,000 - 201,400 £
Consumption L/100km
1.2 - 12.2 L/100km
Consumption L/100km
2.2 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
67 - 68 km
Electric Range
98 - 118 km
Battery Capacity
14.4 kWh
Battery Capacity
-
co2
28 - 276 g/km
co2
50 - 252 g/km
Fuel tank capacity
52 - 73 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
Sedan
Seats
4
Seats
5
Doors
5
Doors
-
Curb weight
1,770 - 2,150 kg
Curb weight
2,165 - 2,650 kg
Trunk capacity
380 - 535 L
Trunk capacity
345 - 530 L
Length
4,969 - 5,009 mm
Length
-
Width
1,908 - 1,950 mm
Width
1,921 mm
Height
1,422 - 1,424 mm
Height
-
Max trunk capacity
1,235 - 1,390 L
Max trunk capacity
-
Payload
510 - 600 kg
Payload
420 - 660 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol MHEV, Plugin Hybrid
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
All-Wheel Drive, Rear-Wheel Drive
Power HP
204 - 630 HP
Power HP
336 - 635 HP
Acceleration 0-100km/h
3.4 - 8.1 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
245 - 280 km/h
Max Speed
-
Torque
370 - 850 Nm
Torque
560 - 850 Nm
Number of Cylinders
4 - 8
Number of Cylinders
6 - 8
Power kW
150 - 463 kW
Power kW
247 - 467 kW
Engine capacity
1,968 - 3,996 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2,023 - 2,024
Model Year
2026
CO2 Efficiency Class
E, F, B, G
CO2 Efficiency Class
G, B, F
Brand
Audi
Brand
Mercedes-Benz
Is the Audi A7 offered with different drivetrains?

Available configurations include All-Wheel Drive or Front-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.