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Audi A3 Limousine vs Mercedes S Class comparison

Compare performance (400 HP vs 635 HP), boot space and price (27,700 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Limousine or Mercedes S Class?

Audi A3 Limousine vs Mercedes S Class: Key differences

Audi A3 Limousine

  • significantly cheaper
  • only slightly quicker 0–100 km/h
  • clearly lighter
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Mercedes S Class

  • noticeably more power
  • clearly more efficient
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By Achim Sedelmaier

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

A3 Limousine

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 A3 Limousine is significantly cheaper – starting at 27,700 £ , while the Mercedes S Class costs 104,000 £ . That’s a price difference of around 76,334 £.

Fuel consumption also shows a difference: the Mercedes S Class uses 2.2 L/100km and is clearly more efficient than the Audi A3 Limousine with 4.4 L/100km. The difference is about 2.2 L/100km.

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 noticeably more power – delivering 635 HP compared to 400 HP. That’s roughly 235 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A3 Limousine 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 significantly more torque with 850 Nm compared to 500 Nm. That’s about 350 Nm more.

A3 Limousine

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 5 people.

In terms of curb weight, Audi A3 Limousine is clearly lighter – 1,360 kg compared to 2,165 kg. The difference is around 805 kg.

When it comes to payload, the Mercedes S Class carries markedly more – 660 kg compared to 480 kg. That’s a difference of about 180 kg.

Who wins the race in the data check?

The Mercedes S Class stands well ahead of its rival 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 A3 Limousine
Mercedes S Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A3 Limousine

The Audi A3 sedan dresses up compact practicality in clean, premium lines, giving you the feel of an upscale small car with a proper boot. Inside it’s neat, driver-focused and nicely finished — a sensible, enjoyable daily companion that prefers poise over showy theatrics.

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Reviews Audi A3 Limousine

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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 A3 Limousine
Mercedes S Class

Costs and Consumption
Price
27,700 - 94,300 £
Price
104,000 - 201,400 £
Consumption L/100km
4.4 - 9.2 L/100km
Consumption L/100km
2.2 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
98 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
115 - 208 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
1,360 - 1,640 kg
Curb weight
2,165 - 2,650 kg
Trunk capacity
321 - 425 L
Trunk capacity
-
Length
-
Length
-
Width
1,816 - 1,851 mm
Width
1,921 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
415 - 480 kg
Payload
420 - 660 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, 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
116 - 400 HP
Power HP
336 - 635 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
-
Max Speed
-
Torque
220 - 500 Nm
Torque
560 - 850 Nm
Number of Cylinders
4 - 5
Number of Cylinders
6 - 8
Power kW
85 - 294 kW
Power kW
247 - 467 kW
Engine capacity
1,498 - 2,480 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2,025 - 2,026
Model Year
2026
CO2 Efficiency Class
D, C, E, G
CO2 Efficiency Class
G, B, F
Brand
Audi
Brand
Mercedes-Benz
What drive types are available for the Audi A3 Limousine?

The Audi A3 Limousine is available as Front-Wheel Drive or 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.